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CHñ §Ò 1: §¹I C¦¥NG VÒ DßNG §IÖN XOAY CHIÒU. C. ĐỀ THI ĐẠI HỌC – CAO ĐẲNG CÁC NĂM (ĐỀ CAO ĐẲNG 2009) Câu 43 mã đề 791:  !"#$%%&'()#*+,%*- .  /  0 1  /     /  / 2  /  0 (ĐỀ CAO ĐẲNG 2009) Câu 51 mã đề 297:34($%*5//6789 :;< +&%4(*+,=>? . /% 1 %  0% 2 0%  (ĐỀ ĐẠI HỌC 2007) Câu 20 mã đề 135: 2+@:5A  /6 BC=" #D '/)#:#4CE+,A   F*$#@ . /GHF*0GH 1 /GF*IG  /GIF*0GI 2 /GJF*GJ (ĐỀ ĐẠI HỌC 2010) Câu 24 mã đề 136: B#@4(50 0 7/6K6G097CL+,8 L+,94CE/ 0 8F*" M#@/GI4(*4CE%* . N/ 0 8 1 N/8 / I 8 2 08 Chñ ®Ò 2: viÕt biÓu thøc c¸c ®¹i l îng cña ®o¹n m¹ch r,l,c m¾c nèi tiÕp. (ĐỀ CAO ĐẲNG 2007) Câu 2 mã đề 126: 3OCPQ<" 7"9RF*ST'( !L  Q  R   )U:%*':#P4(V QRF* WF(X4'*%* A.  Q Y(6G0FY  R B.  R Y(6G0FY   C.  Q CZ(6G0FY    D.   CZ(6FY  R (ĐỀ CAO ĐẲNG 2007) Câu 10 mã đề 126: 3[F*QR=>(<4 ' 5\  ]  !L \ Q \ R \  )U:%*'SP < "RF*S ^' \ Q 5/G0  \ R 5\  _ A. Y(6G0 FY'P B. CZ(6GH FY'P C. Y(6GH FY'P D. CZ(6G0 FY'P (ĐỀ CAO ĐẲNG 2007) Câu 27 mã đề 126: 2C`CP A. aFY'PF*(+%>+, B. 4CES`%bFYCPX C. aF*a(FY'P D. %>%(6G0 FY'P (ĐỀ CAO ĐẲNG 2008) Câu 11 mã đề 241: 3['4CES=>cF* QR=>(<4 '$ A. %>a(FYC B. <%>)d(FY'$S  C. <%>F>(FY'$S  D. S%>a(FYC (ĐỀ CAO ĐẲNG 2009) Câu 3 mã đề 297:BCOCP"F*S T'(_ . 4($S)d(FY4($  1 4($"a(FY4($S   4($SCZ(FY4($  2 4($"CZ(FY4($ (ĐỀ CAO ĐẲNG 2009) Câu 30 mã đề 297:BCOCPT'(FY "FY4(_)#C@ . CZ(6G01 Y(6GH  Y(6G0 2 CZ(6GH (ĐỀ CAO ĐẲNG 2009) Câu 36 mã đề 297:3[4(5\7]e6GH9F*`S_ )#C%*5A  7]ef  9 g4CEXf  +, . N6G0 1 NI6GH 6G02 I6GH Jh (ĐỀ CAO ĐẲNG 2009) Câu 49 mã đề 297:3[4(4CESJ8F*Q RT'(_)#%*5A  7]e6GH9 ^'T+iS_ )#%*5A  7]N6G/09 34(%* . 5J 0 7/6K6G/097891 5J 0 7/6K6GJ9789  5J 0 7/6e6G/097892 5J 0 7/6e6GJ9789 (ĐỀ CAO ĐẲNG 2009) Câu 17 mã đề 297:3[4(5\  06j7\  =>cjc)d9F* `S k4+@*<l? . )#SC*%Y=j*%Y 1 34($Y( 0 π FY)#C  )#SC=>c=jc 2 2=4XS*%Y=j*%Y (ĐỀ CAO ĐẲNG 2009) Câu 25 mã đề 297:mOSF*" T'( 3%($4(PSF*4(P+, .  0 π 1 [6   0 π − 2  J π [ J π − (ĐỀ CAO ĐẲNG 2010) Câu 5 mã đề 794:3[4(5\  ωF*`CP  gn\%*4(S$oA  F*A%%)d%*4CE:#4CEpF*4CE SX)#C :*<sai? .     U I U I − = 1    0 U I U I + =    u i U I − = 2  0 0 0 0   / u i U I + = (ĐỀ ĐẠI HỌC 2007) Câu 1 mã đề 135:BC`S_'P  A. Y(6G0FY)#D. Y(6GHFY)# C. CZ(6G0 FY)# B. CZ(6GH FY)# (ĐỀ ĐẠI HỌC 2007) Câu 19 mã đề 135: BC=>(<4)# Y(f7FYqfq69FY'P 3 A. OCPF*S B. O"7"9F*S C. `" D. OCPF*"7"9 (ĐỀ ĐẠI HỌC 2007) Câu 34 mã đề 135:3[F*QR=>(<4'  5\  ] _C%*5A  7]e6GJ  9  3*%> A. r R 5Q B. r R qr  C. r R 5r  D. r R sr   (ĐỀ ĐẠI HỌC 2008) Câu 11 mã đề 230:^'C=>(<4)# CZ(FY'$_*O A. SF*+'CP B. CPF*" C. CPF*S D. <"F*SFY"=4iU=4 (ĐỀ ĐẠI HỌC 2009) Câu 15 mã đề 629:3[4(F*QRT'( 1'Q 5/Ω "R5  / /π  79S5  I / 0 − π 7t9F*4( $"%* R  0 0 7/  9 0 π = π + 789 1@:4($%* .   H7/  9 H π = π + 789 1   H7/  9 H π = π − 789    H 0 7/  9 H π = π + 789 2   H 0 7/  9 H π = π − 789 (ĐỀ ĐẠI HỌC 2009) Câu 21 mã đề 629:!['=>cI8F*OCP T'(FY"p" / Hπ 79_C%* u )#/. ^'[F**4(  / 0 /0 = π 789_+@:X)# C%* .    0 7/0  9 H π = π − 7.9 1   7/0  9 H π = π + 7.9     0 7/0  9 H π = π + 7.9 2   7/0  9 H π = π − 7.9 (ĐỀ ĐẠI HỌC 2009) Câu 45 mã đề 629: 3[4(   / I u U t π π   = −  ÷   789F*S  H 0 / π − 7t9 v#@4($S%*/8_)#C%*H. 1@: X)#C%* .  H 0  / J i t π π   = +  ÷   7.9 1   / J i t π π   = +  ÷   7.9    / J i t π π   = −  ÷   7.9 2  H 0  / J i t π π   = −  ÷   7.9 (ĐỀ ĐẠI HỌC 2009) Câu 54 mã đề 629: 3[4(   / 7 9 I u U t V π π   = +  ÷   F* "p" / 0 L π = 79 v#@4($"%* / 0 8_)# "%*0. 1@:X)#"%* . 0 I  / 7 9 J i t A π π   = −  ÷   1  0 I  / 7 9 J i t A π π   = +  ÷     0 0  / 7 9 J i t A π π   = +  ÷   2  0 0  / 7 9 J i t A π π   = −  ÷   (ĐỀ ĐẠI HỌC 2010) Câu 46 mã đề 136:3[4(5\  ]F*"p"R_)# "%* . 5 90G7 πω ω +t L U o 1 5 90G7 0 πω ω +t L U o  5 90G7 0 πω ω −t L U o 2 5 90G7 πω ω −t L U o (ĐỀ ĐẠI HỌC 2010) Câu 37 mã đề 136:3[4(5\  ]F*OCPQ "p"RF*ST'( gn%*)#:#Co  /  0 F* I %%)d%*4(:#$CP$"F*$ S :l%*- . 5 0 G]R 1 5 / GQ  5 I ]2 5 00 9 / 7 C LR u ω ω −+ (ĐỀ ĐẠI HỌC 2011) Câu 33 mã đề 817:3[4( 0 u U t ω = F*S_)# 4CES%*A B#@4(PS%*F*)#%* : %&$4%)d%* .  0 0 0 0   / \ A H + = 1  0 0 0 0   / \ A + =   0 0 0 0   0 \ A + = 2  0 0 0 0   / \ A 0 + = (ĐẠI HỌC 2012) Câu 28 mã đề 958:3[4(5\  ωF*OCPQ" p"RF*ST'( gn%*)#:#Co /  0 F* I %%)d%*4(:#$CP$"F*$Sor%*cCPX  :l%* u/ . 5 I ω 1 5 / u R  5 0 u L ω 2 5 u Z CHñ §Ò 3: tÝnh r,l,c – c«ng suÊt tiªu thô (ĐỀ CAO ĐẲNG 2007) Câu 15 mã đề 126: 3['5/0 0/6789 %&   O CPQ5Iw<"7"9p"R5HG6   F*(x='T '( 1'(x='CP=>4=@ M`X(x='%* A. /y. B. 0. C. 0. D. I. (ĐỀ CAO ĐẲNG 2007) Câu 25 mã đề 126: 3['5\  ]FY\  ] =>cF* QR=>(<4  ' SCP%*y8<"7" 9%*/08F*S%*J8 'SP*+, A. 008 B. /H8 C. /8 D. 0J8 (ĐỀ CAO ĐẲNG 2007) Câu 28 mã đề 126: R%)d[' 5 0 ]789 FY ] => cF*;(V-CPQ<"7"9p"RS _;(VC&4CES+,. 3['*F* O4(VC&T'(_cCPX%* A. Iz B. /z C. / 0 z D. / I z (ĐỀ CAO ĐẲNG 2008) Câu 10 mã đề 241: 25/67.9<CP /wF*p"R >{&SC&<%* A. /| B. h| C. u| D. |  (ĐỀ CAO ĐẲNG 2008) Câu 10 mã đề 241: mOSCPQ< CPCCF*p"RT'( ![F*' 5\ 0] 789_ C4CES%*A 1'"=4F*=4C%*=4 >{ &SC*%* A. 7CeQ9A 0 B. A 0 Q  \ 0 G7QeC92 \A (ĐỀ CAO ĐẲNG 2008) Câu 21 mã đề 241: ![F*O<"7"9T '(FYCP '  _"=4X <+, I %4CE XCP  kXCFY('$%* A. bU6GIB. U6GJC. U6GJ D. bU6GI (ĐỀ CAO ĐẲNG 2008) Câu 26 mã đề 241: mO<"7"9T'(FY CP ^'[' 5/ 0 /6 789F*_'S$ <%*8 !'S$CP+, A.  0 8 B.  I  8 C. / 0 8 D. / I  8  (ĐỀ CAO ĐẲNG 2008) Câu 31 mã đề 241: 3['c)dF* QR=>(<4 !C%YU4CE/G06 LC A. 'S$CP+,'S$ B. 'S$<iU'S$+"S C. Cb(FY'$ D. 'S$CP%YU'S$ (ĐỀ CAO ĐẲNG 2008) Câu 32 mã đề 241: ![' 5\  ]789F*QR =>(<4_'S$CP<F*+"S%%)d%*I 8 /08F*y8 g4CEX\  +, A.  0 8 B. I 0 8 C. 8 D. I8  (ĐỀ CAO ĐẲNG 2009) Câu 2 mã đề 297:3[4(5/7]e6GJ9789F* CP"F*ST'(_%*507]e6GI97.9>{&S X%* . /I| 1 |  I| 2 /|  (ĐỀ CAO ĐẲNG 2009) Câu 35 mã đề 297:3[4(5/0]789]c)dF* OCP0z"p"0GIJ679F*S/ NH G6tT'(  >{&SX%*| g4CEX]%* . /6CG 1 6CG  /6CG 2 /06CG  (ĐỀ CAO ĐẲNG 2010) Câu 9 mã đề 794:3[4(5\  ωωc)dF*O "p"RCPQF*ST'( !ωq / LC _ u0 . 4($CPQ+,4(S$ 1 4(S$CPQiU4(S$  )#CCZ(FY4($ 2 )#Ca(FY4($ (ĐỀ CAO ĐẲNG 2010) Câu 18 mã đề 794::3[4( 00 0 /u t π = 789F*.1O .mF*m1T'( 3.mOCPQT'(FY"Rm1 `S 1'4($.mF*4($m14CES +,)%( 0 I π 34(S$.m+, .  00 0 8 1  00 I 8  008 2 //8 (ĐỀ CAO ĐẲNG 2010) Câu 38 mã đề 794:3[4(F*OCPHΩF* ST'( 1'4($%( I π FY)#C 2 =4XS+, .  H I Ω 1  H I I Ω   HΩ 2  0 I Ω (ĐỀ CAO ĐẲNG 2010) Câu 42 mã đề 794:3[4(   \ 7} 9 789 J π = + F*OCP   Q  F*    "        p  "  R  T    '(  _  )#              %*    A 7} 9 7.9 /0 π = + B`CPQF*"=4X"%* .  / 0 1 /   I 0 2  I (ĐỀ CAO ĐẲNG 2010) Câu 46 mã đề 794:3[4(   \  }= F*OCPQF* ST'( 1'4($CPF*4($+"S4CES+,  k4+@*<%*sai? . )#CZ( H π FY4($ 1 34($CPY( H π FY4($  )#Y( H π FY4($ 2 34($CPCZ( H π FY4($ (ĐỀ CAO ĐẲNG 2010) Câu 58 mã đề 794:3[4(5 \ 0  ω 789F*O" T'(FY+'CPQ ~FY4CEQ / 50ΩF*Q 0 5yΩX+'CP_>{&SC +,H| g4CEX\%* . H8 1 08  /8 2  / 0 8 (ĐỀ CAO ĐẲNG 2011) Câu 3 mã đề 791:!F>{fX(4+@ *<sai? . 8Y`S[`"_f5 1 8YQRT'("C)P_f5  8Y`CP_f5/ 2 8YOSF*CPT'(_qfq/ (ĐỀ CAO ĐẲNG 2011) Câu 7 mã đề 791:3[4(5 00 0 / t π 789F*O +•<%//8K|T'(FYSc)d 3`@•4 +_)# 3%($)#F*4(P%l*%* uI .  0 π 1  J π   I π 2  H π (ĐỀ CAO ĐẲNG 2011) Câu 9 mã đề 791:3[4(5\  ]7\  F*]=>c9F* '(OCP"F*S`)d !=4%*/z_ >{&SXp%*/| !=4%*0z_4(S$S %* / 0 8 g4CEXCP%* . /z 1 /z  /Jz 2 /0z (ĐỀ ĐẠI HỌC 2007) Câu 35 mã đề 135:3[F*QR=>(<4'  1'CPQ50w<"7"9R5/G6 3@ 'PCZ(6GH FY)#_=4XS%* A. /w B. /w C. /0w D. uw (ĐỀ ĐẠI HỌC 2007) Câu 36 mã đề 135:3[' 5/ 0/6789F*QR =>(<4 FYQ%Y=>cF* R5/G6    !'SP;(VQ R F*%Y) >{&SX%* A. I| B. /| C. 0| D. 0| (ĐỀ ĐẠI HỌC 2008) Câu 8 mã đề 230:O<T'(FYS 3 %(X '$<FY)#C%*6GI 'S $S+, I  %'S$< 3%(X'$ <FY'$C&%* . 06GI1 N6GI 6G02  (ĐỀ ĐẠI HỌC 2008) Câu 16 mã đề 230:O<CPQT '(FYS 1''$<%(6G0FY'$  m%&$CPQFY"=4 r R X<F*=4 r  XS%* A. Q 0 5r R 7r R Nr  9B. Q 0 5r R 7r  Kr R 9C. Q 0 5r R 7r R Nr  9 D. Q 0 5r R 7r  Kr R 9 (ĐỀ ĐẠI HỌC 2009) Câu 8 mã đề 629:3[4(5\  ωF*T'(OCP QSF*"p"Rc)d 1'=4XS+, Q I 3`R @4(S$"p= . 4($CP%( J π FY4($ 1 4($S%( J π FY4($  C)P 2 4($"%( J π FY4($ (ĐỀ ĐẠI HỌC 2009) Câu 11 mã đề 629:3[4(4CES\F*.1 O"p"RCPQF*ST'(x:pC& gn\ R \ Q F*\ € %%)d%*44(S$;(V 1'4($.1%( 0 π  FY4($^17^1OQF*9 :*)Y<%*l? .  0 0 0 0 Q  R \ \ \ \= + + 1  0 0 0 0  Q R \ \ \ \= + +   0 0 0 0 R Q  \ \ \ \= + +  2  0 0 0 0 Q  R \ \ \ \= + + (ĐỀ ĐẠI HỌC 2009) Câu 14 mã đề 629:mOCP"F*S T'( 1'"=4{(>=4 2aF>='7CPC{%Y94($ SF*4($CP_`XF>='%*) 3%(X4($ FY)#C%* .  H π 1  J π   I π 2  I π − (ĐỀ ĐẠI HỌC 2010) Câu 21 mã đề 136:3[4(4CESF*=>cF* O+'CPQT'(FYS gn4(S$S$ +'CPF*>{X=+'CP4CEQ / %%)d%*\ / \ Q/ F*f / o=+'CP4CE Q 0 _44CE)U:C&%*\ 0 \ Q0 F*f 0 o1'\ / 50\ 0 \ Q0 50\ Q/ g4CEXf / F*f 0 %*- uH . f / 5/G  f 0 5/G I 1 f / 5/G I f 0 50G   f / 5/G  f 0 50G  2 f / 5/G0 0 f 0 5/G 0 (ĐỀ ĐẠI HỌC 2010) Câu 27 mã đề 136:m.1O.mF*m1T'( 3 .mCPwT'(FY"p"/G6m1`SFY c)d 3[4(5\  /6789F*.1 3`XS' 4CE / 4(.1%(6G0FY4(.m g4CEX / +, . y / N G67t91 / N G67t9 H / N G67t92 0 / N G67t9 (ĐỀ ĐẠI HỌC 2010) Câu 41 mã đề 136:BC#np*nT'(FY CPQCOT*F*4(4CESIy8 1'*44 CEE:-008Kyy|F*=l>{E:_%($4(PF* )#%*fFYf5y 3@*l>{E:_Q+,-. IHw  1 IJ/w  0Juw 2 /yw  (ĐỀ ĐẠI HỌC 2011) Câu 2 mã đề 817: R%)d[44( /  5  / 0 7/ 9U t π ϕ + o 0  5 0 0 7/0 9U t π ϕ + F* I 5 I 0 7// 9U t π ϕ + F*OCPQ" p"RF*ST'(_)#C+@:)U:%*- / 5 0 /I t π o 0 5 0 0 7/0 9 I I t π π + F* I 5 0 • 0 7// 9 I I t π π − M4AF*A‚- . A5A‚ 1 A5 • 0I  AqA‚ 2 AsA‚ (ĐỀ ĐẠI HỌC 2011) Câu 16 mã đề 817:m.1O.mF*m1T'( 3 .mOCPQ / T'(FYSm1OCPQ 0 T'( FY"p"R 3[4(F*4CES=>cF* .1 !.1&S>{+,/0|F*>{+,/ ^'TS _4(.mF*m1a4CES)%( I π >{&SC& .1CC)#d(*+, . u| 1 /J|  h| 2 /y| (ĐỀ ĐẠI HỌC 2011) Câu 28 mã đề 817:mn{4+'4(FYpEF<XU{( {(%F<X:{( 2U{&:{(+E'F< m4EF <'@{'(&F*:{(Xn*[F*U{(4( 4CES=>cCOaF>='4E`4(P:{(@PF*U{( Rl` 4(+,HI M={&F*:{(0HF<_`4(+,H 1in(LC 4+'4( 3@)d4+'4(l)pEn*("'(S{&F*:{( . HF< 1 yHF<  /F< 2 JF< (ĐỀ ĐẠI HỌC 2011) Câu 36 mã đề 817: 3.1O.mF*m1T'( 3.m OCPQ / 5HΩT'(FYSS I /  t H − = π m1OCPQ 0 T'(FY" 3[F*.14(4CESF*=>c_4(: #P.mF*m1%%)d%*- .m u   0 7/  9789 /0 π = π − F* m1  // 789= π  >{X.1%* . yJ 1 yH  h 2 u/ (ĐỀ ĐẠI HỌC 2012) Câu 7 mã đề 958:3[4(5\  /π789F*.1O .mF*m1T'( 3.mOCP / I Ω  T'(FY"p"R  3m1`S H / 0 F π − 1'4($.m%( I π FY4( $.1 g4CEXR+, .  I H π 1  0 H π   / H π 2  0 H π (ĐỀ ĐẠI HỌC 2012) Câu 29 mã đề 958:3[4(5H/π7L+,8L+,9F* .1OCPΩT'(FYƒ )#S%*0.  u 1'P#@4(:#$.14CEH8oP#@ / H t + 79)#: #+,=>F*" >{&SXƒ%* . H| 1 0|  /J| 2 /| (ĐỀ ĐẠI HỌC 2012) Câu 39 mã đề 958:3[4(5\   ω 7\  F* ω =>c9F*.1 x:pOS"F*CPT'( gnm%*@$SF* " 1'4(S$.m+,4(S$m1F*)#C %( /0 π FY4($ >{Xm1%* .  I 0 1 0J   2  0 0 (ĐỀ ĐẠI HỌC 2012) Câu 40 mã đề 958:3[4(5 / 0 / t π 789F*T'( OCPJ Ω <7CP9F*S >{&SX+,0|  ^+"S+,<„CP=>4=@ !4(S$CP+, 4(S$<F*+,  I 8 2=4XS4CE+, .  J I Ω 1  I I Ω   / I Ω 2  H I Ω (ĐỀ ĐẠI HỌC 2012) Câu 54 mã đề 958:![F*<p" H π ' /08_)#<%*H. M'*+,4( F*4CES/08_)#S<+, . I. 1 H.  0H. 2 /u. Chñ ®Ò 5: céng h ëng ®iÖn (ĐỀ CAO ĐẲNG 2009) Câu 32 mã đề 297:3[4(5\  06j\  =>cF*jc)d F*QRT'( !j5j  _C)P g4CEXj  %* .  LC 0 LC π 0 LC / LC π 0 / (ĐỀ CAO ĐẲNG 2010) Câu 30 mã đề 794: Câu 30:3[4(50/π789F*O +'CPQT'(FY"p" / π  3`+'CP@>{iC&+' CPp=)#SC+, . /. 1 0.   0 . 2 0 0 . (ĐỀ CAO ĐẲNG 2011) Câu 23 mã đề 791:3[4(5 / 0 / t π 789F*OCP "F*ST'(_4(S$CP%*/8 >{ X%* .  / 0 1  I 0   I I 2 / ĐỀ ĐẠI HỌC 2007) Câu 14 mã đề 135: 3['5\  ]7\  F*]=>c9F* QR=>(< 4 1'p"F*)d$=>c 3`CECPQ@>{& SXp !>{X+, A.  B. y C. 0 /2 D. / (ĐỀ ĐẠI HỌC 2007) Câu 37 mã đề 135: 3[  ' 5 \  ] 7\  =>c9 F*  QR =>(< 4 1'CPX=>c !)d)PC (4+@*<sai? A. 'SPCPQiU'SP B. )#SXC4CE%Y{ C. ':#Pa(FY':#PCPQ D. "=4F*=4X+, (ĐỀ ĐẠI HỌC 2008) Câu 14 mã đề 230:3=>(<4O<p"R uJ CPQF*S !/G LC _> {X* A. +, B. (ScCPX D. (SCPX C. +,/ (ĐỀ ĐẠI HỌC 2010) Câu 23 mã đề 136:3[4(4CES08F*=>cF* .F*1XT'(x:pO+'CPQ"p"RF*S c gn^%*@$"F*S 44CEQR$F*=4=> 8Y 5 / _4(S$+'CPQ4CE=>cF*=4=>=c4CEQX+'CP  8Y5 / G0_4(S$.F*^+, . 008 1 /8  08 2 /08  (ĐỀ ĐẠI HỌC 2011) Câu 1 mã đề 817: 3[4(5 0 0U ft π 7\=>cjc)d9F* T'(OCPQ"p"RF*S ! %*j / _"=4F*=4X4CE%%)d%*JΩF*yΩ !%*j 0 _>{X +,/ :%&$j / F*j 0 %* . j 0 5 / 0 I f 1 j 0 5 / I 0 f  j 0 5 / I H f 2 j 0 5 / H I f Chñ ®Ò 6: c¸c m¸y ®iÖn – truyÒn t¶i vµ ph©n phèi ®iÖn n¨ng (ĐỀ CAO ĐẲNG 2007) Câu 5 mã đề 126: m4+''FXU{(%*F*:{(%*/ 1i n(LX4+'' 3[F*U{('4CES/8_ 'SP:{(=@P4CE%* A. 08 B. /8 C. 8 D. H8 (ĐỀ CAO ĐẲNG 2007) Câu 50 mã đề 126: m=<„(…†_$bF<L; FH 0 !<CS:7[(…X=9CDC)# FxU":DF>FYCSF*%Y0B BD>p=<%* . 0u|+ 1 /y|+  y/|+ 2 H|+  (ĐỀ CAO ĐẲNG 2009) Câu 10 mã đề 791: m=<„(…_$bL0 0 O0 F<FY0FGCSECDC)# 1'CS%*CS: ,C[(…=F*F>FY()UXDC)# M{S{C= %Y+,0008 ":D%Y+, . HB 1 JB  B 2 HB (ĐỀ CAO ĐẲNG 2009) Câu 16 mã đề 791: m4‡4(:{(TFYCPU{(T F*O BC:{( . %>%YUCU{( 1 %>iUCU{(  +,CU{( 2 @iU[%YUCU{( (ĐỀ CAO ĐẲNG 2009) Câu 50 mã đề 791:!C‡>{kDU(4'U &S_>{(LC&)#<%*∆k 3@>{(LC&)#<`%* P n ∆ 7FYs/9P U(4)#VS4+'4(7%L)P9`$F<XU{(F*F<X :{(%* .  / n 1  / n   n 2  (ĐỀ CAO ĐẲNG 2010) Câu 10 mã đề 794: m4(4(("%*C>FY IuFG(l BX{":*4(4C%* M[(pXCJ+, . /0 1 H  /J 2 y (ĐỀ ĐẠI HỌC 2007) Câu 32 mã đề 135: m4+''U{(/F<)dTF* 'S008 !'SP:{(@P%*HyH8 1i n(LX4+'' MF<X:{(%* . // 1 00  0 2 0 (ĐỀ ĐẠI HỌC 2008) Câu 2 mã đề 230: k4+@*<%*l=F+(? A. 2+(%*O+(%(6GI B. `+(Y)dDC)# C. !)#C(p_)#C(%p@ uu D. !)#C(+,=>_)#C(%=4=> (ĐỀ ĐẠI HỌC 2008) Câu 37 mã đề 230: m=<„_$b/FL;FJ 0  CS:X=FYFb/0FG(lCDC)#":D+,0 B BCSF>FY4)#":D n#%lFxU(4('X[(…=< )d)YFYFxU":D 1@:{":C=%* A. x5Hy67H6e69789 B. x5Hy67H6N6G0  9789 C. x5Hy67H6K6G0 9789 D. x5Hy67H6e69789 (ĐỀ ĐẠI HỌC 2009) Câu 19 mã đề 629: m4+'4(%*'+E . +'cX 1 ="‡+'c4(X  %*‡>{X 2 +'c* (ĐỀ ĐẠI HỌC 2009) Câu 46 mã đề 629: BD>F<„%* ( ) 0 0 /  / H t Wb π π π −   Φ = +  ÷   1@ :X{":{CF<*%* .  0 / 7 9 H e t V π π   = − +  ÷   1  0 / 7 9 H e t V π π   = +  ÷     0/ 7 9e t V π = − 2  0 / 7 9e t V π π = (ĐỀ ĐẠI HỌC 2010) Câu 12 mã đề 136:3[F*U{(X4+'4(%L)P7+i(L9 4(4CES=>c_4(S$:{(@P%*/8 v :{('"+YF<_4(S$@PX%*\'‡&F<_ 4(%*0\ ^'‡&IF<P:{(_4(S$@PX*+, . /8  1 08   008  2 //8  (ĐỀ ĐẠI HỌC 2010) Câu 30 mã đề 136:^pX4(4(F* .1OCPQT'(FY" 1iCP4<X4(4 !C>X4 FYFG(l_)#SC%*/. !C>X4 FYIFG(l_)#SC%*I. ^'C>X4FY 0FG(l_"=4X.1%* . QG I 1 Q I  0QG I 2 0Q I (ĐỀ ĐẠI HỌC 2010) Câu 57 mã đề 136:mU=+_)#FY4(S 008_C>{Un%*/u| 1'U>{yF*>{iC& <{U%*/u| 1i4(L=4)#pU%* . 0.  1 I.   /.  2 0.  (ĐỀ ĐẠI HỌC 2011) Câu 9 mã đề 817:m=<„(…FYωCSE ,C[(…=<CDC)#FxU":DF>FYCSX= M{ ":C=+@:x5  7 9 0 E t π ω + B#@5FxU(4('X[(… =<d(FYFxU":D+, . H  1 /y   h  2 /  (ĐỀ ĐẠI HỌC 2011) Câu 46 mã đề 817:m4(4((:O+< T'( M{4(4CF*4CES / 0 8 BD >p;FX(:%*  π |+ MF<C;<X(:%* .  u/  F 1 0F  /F 2 HF (ĐỀ ĐẠI HỌC 2011) Câu 52 mã đề 817: 3[4(4CESF*=>c%%)d F*CPQ"p"RS_)#S )U:%*0.o.o0. ^'[4(*F*O+(VC& T'(_)#S%* . 0. 1 I.  /. 2 . (ĐẠI HỌC 2012) Câu 24 mã đề 958:3‡DC(4)d)'=4E)+,)# <C"( +''4(C‡D\%&0\_<)dC{(X ‡‡D/0%&/HH C,L'(LC&)#<>{&SX4<) >{XC(4=>cF*>{C4C)#d(+, ^'4(C%* H\_C(4*{(X‡ uy [...]... va t trng biờn thi n theo thi gian vi cựng chu kỡ B Trong song iờn t, iờn trng va t trng luụn dao ụng lờch pha nhau /2 C Song iờn t dựng trong thụng tin vụ tuyờn gi la song vụ tuyờn D Song iờn t la s lan truyờn trong khụng gian ca iờn t trng biờn thi n theo thi gian I HC 2007:Cõu 28 mó 135: Trong mach dao ụng LC co iờn tr thuõn bng khụng thỡ A nng lng t trng tp trung cuụn cam va biờn thi n vi chu... bỡnh bng A 72 mW B 72 àW C 36 àW D 36 mW Chủ đề 3: sóng điện từ CAO NG 2007 :Cõu 19 mó 126: Song iờn t la quỏ trỡnh lan truyờn ca iờn t trng biờn thi n, trong khụng gian Khi noi vờ quan hờ gia iờn trng va t trng ca iờn t trng trờn thỡ kờt lun nao sau õy la ỳng? A Vộct cng ụ iờn trng E va cam ng t B cựng phng va cựng ụ ln B iờn trng va t trng biờn thi n theo thi gian vi cựng chu kỡ C Tai mi im ca khụng... thuõn bng khụng thỡ A nng lng t trng tp trung cuụn cam va biờn thi n vi chu kỡ bng chu kỡ dao ụng riờng ca mach B nng lng iờn trng tp trung cuụn cam va biờn thi n vi chu kỡ bng chu kỡ dao ụng riờng ca mach C nng lng t trng tp trung t iờn va biờn thi n vi chu kỡ bng na chu kỡ dao ụng riờng ca mach D nng lng iờn trng tp trung t iờn va biờn thi n vi chu kỡ bng na chu kỡ dao ụng riờng ca mach I HC 2008:Cõu... iờn co iờn dung 5àF Trong mach co dao ụng iờn t t do Khoang thi gian gia hai lõn liờn tiờp ma iờn tớch trờn mụt ban t iờn co ụ ln cc ai la A 5.10-6s B 2,5.10-6s C.10.10-6s D 10-6s I HC 2009 :Cõu 20 mó 629: Trong mach dao ụng LC lớ tng ang co dao ụng iờn t t do, iờn tớch ca mụt ban t iờn va cng ụ dong iờn qua cuụn cam biờn thi n iờu hoa theo thi gian A luụn ngc pha nhau B vi cựng biờn ụ C luụn cựng... lng t trng biờn thi n iờu hoa vi tõn sụ bng mụt na tõn sụ ca cng ụ dong iờn trong mach C Nng lng t trng cc ai bng nng lng iờn t ca mach dao ụng D Khi nng lng iờn trng giam thỡ nng lng t trng tng I HC 2009:Cõu 24 mó 629: Khi noi vờ dao ụng iờn t trong mach dao ụng LC lớ tng, phỏt biu nao sau õy sai? A Cng ụ dong iờn qua cuụn cam va hiờu iờn thờ gia hai ban t iờn biờn thi n iờu hoa theo thi gian vi cựng... t cam L va t iờn co iờn dung C ang co dao ụng iờn t t do thi im t = 0, hiờu iờn thờ gia hai ban t co giỏ tr cc ai la U 0 Phỏt biu nao sau õy la sai? A Nng lng t trng cc ai trong cuụn cam la 2 CU O 2 B Cng ụ dong iờn trong mach co giỏ tr cc ai la U 0 C L C Hiờu iờn thờ gia hai ban t iờn bng 0 lõn th nht thi im t = D Nng lng t trng ca mach thi im t = LC 2 2 CU O LC la 2 4 I HC 2011 :Cõu 13 mó ... 0,12cos2000t (i tớnh bng A, t tớnh bng s) thi im ma cng ụ dong iờn trong mach bng mụt na cng ụ hiờu dng thỡ hiờu iờn thờ gia hai ban t co ụ ln bng A 12 3 V B 5 14 V C 6 2 V D 3 14 V I HC 2011 :Cõu 39 mó 817: Trong mach dao ụng LC lớ tng ang co dao ụng iờn t t do Thi gian ngn nht nng lng iờn trng giam t giỏ tr cc ai xuụng con mụt na giỏ tr cc ai la 1,5.10 -4s Thi gian ngn nht iờn tớch trờn t giam t... cuụn cam va biờn thi n vi chu kỡ bng chu kỡ dao ụng riờng ca mach B nng lng iờn trng tp trung cuụn cam va biờn thi n vi chu kỡ bng chu kỡ dao ụng riờng ca mach C nng lng t trng tp trung t iờn va biờn thi n vi chu kỡ bng na chu kỡ dao ụng riờng ca mach D nng lng iờn trng tp trung t iờn va biờn thi n vi chu kỡ bng na chu kỡ dao ụng riờng ca mach I HC 2008:Cõu 33 mó 230: ụi vi s lan truyờn song iờn t... la 5 f1 thỡ phai iờu chnh iờn dung ca t iờn ờn giỏ tr A 5C1 B.C1/5 C 5 /C1 D.C1/ 5 I HC 2010 :Cõu 20 mó 136: Mụt mach dao ụng iờn t lớ tng ang co dao ụng iờn t t do Tai thi im t = 0, iờn tớch trờn mụt ban t iờn cc ai Sau khoang thi gian ngn nht t thỡ iờn tớch trờn ban t nay bng mụt na giỏ tr cc ai Chu kỡ dao ụng riờng ca mach dao ụng nay la A 4t B 6t C 3t D 12t I HC 2010 :Cõu 25 mó 136: Xột hai... hiờu iờn thờ gia hai ban t iờn biờn thi n iờu hoa theo thi gian vi cựng tõn sụ B Nng lng iờn t ca mach gm nng lng t trng va nng lng iờn trng C iờn tớch ca mụt ban t iờn va cng ụ dong iờn biờn thi n iờu hoa theo thi gian lờch pha nhau 2 D Nng lng t trng va nng lng iờn trng ca mach luụn cựng tng hoc luụn cựng giam I HC 2011:Cõu 45 mó 817: Mach dao ụng iờn t LC gm mụt cuụn dõy co ụ t cam 50 mH va t

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