CHƯƠNG IV: TỪ TRƯỜNG A. PHẦN TRẮC NGHIỆM 1. Từ trường 1.1. !"#không!$% &' ( )('*+,- ."#./ .0!1234 5678.9:;.0!1<!=+76 >678.9:;< "!=+76 ?678.9:;+ !1#!;.@A76 B678.9:;+ !1!C#:!=:+76 1.2.DEFGH )('4 56"#( 8).9: "=:.0!1!=(76 >6"#( 8F./:2!=(76 ?6"#( 8!*.9:.0!12 "!=(76 B6"#( 8I!J2EF!1H (',- 6 1.3.D)J4 563GH !'+K 3GH !'C)H )('6 >63GH "2L 6 ?63GM .0!12 "6 B63GH .0!1+#( ."#./N6 1.4. !"#không!$% 56O F<P!()(' Q72R!S;!'C)6 >6'C). "N+( ,- 7M!'N6 ?6'C T7GC)LU!'C T7GC)V6 B6?!'C)M!'<E6 1.5. !"#không!$%D)('!)('7 56!'C2! 6 >6GC)+@!W 6 ?68).9:.0!1 6 B6!=! *G52>6 1.66 !"#không!$% 56DM .0!1)6 >6?GC)!+S!=()('2="#( .9)6 ?6X- Y!1E!C#:*+!1('2)('6 B6- Y!()('Z7;!'C)6 1.7. !"#đúng% 56?!'+KH )JE!'C)6 >6?!'C)H )('!7M!'! 6 ?6?!'C)M!'<E6 B6[;+ !1#!;A-\!+(0()('3-\!+#!;H +E; !'C)6 1.8. B"#./ .0!1không2L 56!1E#!;6 >6 "!C#:6 ?6!1E!C#:6 B6 "#!;6 1.9..L!"#Đúng% 56'C)H )('"#( T.0!1N.M!'N2L.0!1 >6'C)H )('"#( T.0!1(0M!'(0 ?6'C)H )('"#( T.0!1(0M!'N! B6'C)H )('"#( T.0!1N.M!'(0!*"W(=N 272L."#./ 1.10. ?@;!sai<72)('4 56D+Y!()('Z2R!S;2Z;!'GC)!- >6?!'GC)M!'<<]<E ?6?!'GC)<K B6DEFGH )('.98): " #.0!1!=(7 1.11. !"#!$<72!'C)4 56,F)^U<I$+_^ >6,F+8KU<I$+8 ?6,F+8 U<I$+8KB6!'<E:7<7!K!`2<I$ 1.12. ?!'C)H .0!1N.7.+!'4 56N272L.0!1 >6(0!*"272L.0!1 ?6(0!*"272L.0!1U"(:.0!1 B6(0272L.0!1 1.13. ? !"#U<G)4 56M " >6M ."#./ .0!1 Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 1 ?6M !1E!C#: B6M "2.0!1 1.14. !"#a %D)('*+T` 56; " >6 H#bc!1.@, ?6."#./7.0!1 B6d !1e 1.15.D)('.+2F*+,- 56?+ !1 >6?+ !1!C#: ?6?+ !1#!; B6?+ !17#!;=!C#: 1.16.?@;! <72)('4 56D+Y!()('Z2R!S;2Z;!'GC)!- >6?!'GC)M!'<<]<E ?6?!'GC)<K B6DEFGH )('.98): " #.0!1!=(7 1.17.?!'C)(':(f."# .0!17.+U"fU!=!I4 56!'(02)('! >6!'N272L(9f! U)('! ?6!'N2L(9f! U)('! B6!',KfU)('! 1.18D(32R U32R.c!$LH !'GC)H .0!1(."#./N. 2+272L=N32R4 1.19?!'C)H .0!1N.7.+!'4 56N272L.0!1 >6(0!*"272L.0!1 ?6(0!*"272L.0!1U"(:.0!1 B6(0272L.0!1 2. Lực từ 2.1. ."#./7.0!1d+#- 34 56 ."#!7!g# >6XF1A- #.9: ."# ?6,F1A- #Q8.9: ."# B6 ."#!7$ 2.2.DA-#K #(3H 7U7M `SZH 4 56B0!18) >6h8).0!1 ?6?GC).0!1 B6D)('8) 2.3.;L8).9:;!+."#./7.0!1+#- !=272L!'C)R #!J<4 56D)('!J >6B0!1!J ?6?'!;.0!1 #!J B6B0!12)('!*'!J 2.4.[;!+."#./.Ui .0!1j5U!=27(;)('!7!;LGC)UkD6&7 b;8).9456l& >6Ul& ?6ljj& B6j& 2.5. !"#đúng%[;.0!1!=()('272L!'C)UH 8).9 2.0!1R< #!J< 56!J.0!1S+6 >6!JGC)S+6 ?6!*'!J.0!12!JGC)6B6- #.0!1;7mj j ,- !'C)6 2.6.[;!+."#./7.0!1W !=()('7!'C)N !C)(:,f32R6h8).9:!+."#./7 56N!CL)(:,f6 >6N!CL).L:6 ?6W L)( G6 B6W L)G (6 2.7.?H 8).9:!+."#./ .0!1U'!S,!bW-#K4 562=!f6 >62=!fk6 ?6 #(6 B6 #G6 2.8. !"#không!$% 56h8).9:.0!17272L.0!16 >6h8).9:.0!17272L!'GC)6 ?6h8).9:.0!17272L=NC .0!12!'GC)6 B6h8).9:.0!17I#I2L!'GC)6 2.96 !"#không!$% 56h8).9:.0!1!J<!J.0!16 >6h8).9:.0!1!J<!J!'GC)6 ?6h8).9:.0!1!J<n'!;.0!16 B6h8).9:.0!1<!J<!*'!J.0!12!'GC)6 2.10 !"#không!$% 56h8).9:;!+."#./ .0!1!=()('!Z12L'!;.0!1( !+."#6 >6h8).9:;!+."#./ .0!1!=()('!Z12L.H !+."#6 Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 2 56 >6 ?6 B6>2? > > > ?6h8).9:;!+."#./ .0!1!=()('!Z12L7ST!+."#2 !'C)6 B6h8).9:;!+."#./ .0!1!=()('!Z12LGC)+!!= !+."#6 2.11. .L!"#$% ?;!+."#./ .0!1!=2L!'C)UH .0!1S2LH !'C)6 56h8)W<<n'!;.0!16 >6h8)n<n'!;.0!16 ?6h8)G<n'!;.0!16 B6h8)!J< !J.0!16 k6k3.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.13 3.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.14 3.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.15 3.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.16 D`W H )('(!FWo6j i DU0`N!C(FV6[;!+."#.jj .0!1pjj5!=272L)('(!F3b.9H 8)4 56kUk& >6oUk& ?6pUk& B6iUk& 2.17 [;!+."#./.i!=()('!272L2]GC)6B0!17'!;jUqi5- ."#./38).9:!+."#7!;Lo6j o &6?GC)H )('7(b4 56jUlD >6jUjlD ?6jUrD B6jUjrD 2.18 [;!+."#.l!=()('!7GC)>sjUiDS2L!'GC);7oj j 6B0!1 - ."#7'!;jUi5U38).9:!+."#p6j k &6?.!+."#./4 56ok >6oUk ?6r B6Ur 2.19 !"#không!$% [;!+."#./N .0!1!=()('!3 568).9:@`H !+."#6 >68)Z.92(!H !+."#6 ?68)Z.9:!+."#<7<2L!'C)6 B68).9:!+."#7!!=(!H !+."#6 2.20.[;!+."#./N[&.rtu7.0!1sit5u!=()('!7GC)>sjUitDu6 h8).9:!+."#7!;LvsqUi6j k t&u6w7xST."#[&2!'GC)4 56jUi j >6oj j ?6rj j B6mj j 2.21.[;."#./N7.0!1!=(2d< 7)('!32R6h8) .9:."#7 56 L (6>6 L G6 ?6N!CL:6 B6N!CL,f6 Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 3 56 vsj > >6 > v > v ?6 v B6 > 56 > v B6 > v > v >6 > v ?6 > v 56 v > ?6 v > >6 > v B6 > v 56 v > >6 v > ?6 > v B6 2.223.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.233.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.24.3.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.25.3.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.26.[;."#./!Sf;<."#7.+ 2+5U 5[sl .0!1si56=<."#2()('!>so6j o D7 2]GC)2L+5&L32R6wM<f!bUE 8).9:+5[H 4 56Uk6j o & >6Ui6j o & ?6kU6j o & B6Ur6j o & 2.27?@;!saiy8).9:;."#./7.0!1!- !=272L!'C)R #!J <z4 56.0!1!J >6)('!J ?6'!;.0!1 #!J B6.0!12)('!*'!J 2.28 !"#!$<72M .0!1N4 56d3!g# >6d3$ ?6S3$ B6d3!g#US3$ 2.29?@;!sai4 56;."#./7.0!1!=2L!'GC)3<b.9T8) >6."#./7.0!1!=272L!'GC)38).9:."#./8!+ ?6w(b8!+H 8).9:."#./.l7.0!1!=()('!>v , s>l B6."#./7.0!1!=2L!'GC)38).9:."#v , s>l 2.30 =;<."#./3M7.0!1+#- ( )(' =N<."#272L!'GC) 32R38)7.934 568).{< >68)<."#- # ?68)]< B68)<.9:< 2.31.[;!+."#.l!=()('!7GC)>sjUiDS2L!'GC);7oj j 6B0!1 - ."#7'!;jUi5U38).9:!+."#p6j k &6?.!+."#./4 56ok >6oUk ?6r B6Ur Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 4 v & a 56 v a & >6 v a & ?6 v & a B6 56 > v >6 > v > v ?6 > v B6 v v & a 56 v a & >6 a & B6 & a ?6 v ?6 & a v B6 a & v >6 v a & 56 v a & [ 5 & > > 2.32|."#!1(:32Rb$2E "6{#Z(}8H "4 56!`8.U!`O8" >6!`8 U!`O8K ?6!`8KU!`O8 B6!`8"U!`O8. 2.333.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.343.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.353.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.363.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.373.c!$L8).9:;!+."#./N .0!1732R!= ()('!U!'C)7L32R4 2.38[;."#./!Sf;<."#7.+ 2+5U 5[slU5&sr .0!1si56=<."#2()('! >so6j o D72]GC)2L+5&L32R"kq6 wM<f!bUE8).9:+[&H 4 56jUl6j o & >6Uk6j o & ?6Ui6j o & B6Ul6j o & 3. Cảm ứng từ. Từ trường của một số dòng điện có dạng đơn giản 3.1.;LGC)+";20."#(04 56 Z12L'!;.0!1 >6Z12L.!'(0 ?6Z12L.1E3(0 B6Z12L<E!'(0 Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 5 v & a 56 v a & >6 v & a ?6 v a & B6 v & a 56 v a & >6 v a & ?6 v & a B6 56 > v >6 > v > v ?6 > v B6 v v & a 56 v a & >6 a & B6 & a ?6 v ?6 & a v B6 a & v >6 v a & 56 v a & [ 5 & > O 3.2. ![2&`.0!1N.6G)[!I.0!:LF `)&!I.0!16;L GC)+[2&`S> [ 2> & 34 56> [ sk> & >6> [ sjUi> & ?6> [ sp> & B6> [ s> & 3.3. !"#không!$% 56?GC)!+S!=()('2=.98 >6;LH GC)!S,!bAC α Il F B = 9;2'!;.0!12. !+."#./!=()(' ?6;LH GC)!S,!bAC α Il F B = <9;2'!;.0!12 !!+."#./!=()(' B6?GC)!+S2A 3.4. ?C !"#EGC)+"H 20."#(07<E~ .0!14 56>sk6j q •~ >6>sk€6j q •~ ?6>sk€6j q 6~ B6>sp€6j q •~ 3.5. ;LGC)(0;f."#3(97.0!1+#- EWC4 56>sk€6j q 6& >6>sp€6j q &•l ?6>sp€6j q &•6l B6>sp€6&•l 3.6. D(32R U32R.c!$LH !'GC)H .0!1(."#./N. 2+272L=N32R4 3.7. ;LGC)+;!:(0f."#7.0!1!- Rn #G :`If20 ."#2.f."#!n: `2'!;.0!1- f."#Gf`4 56<!J >6Gk` ?6Gp` B6nk` 3.8. ![2&`.0!1N.UGC)+[LGC)+&p`6I !"#!$4 56( [ sp( & >6( [ s( & •p ?6( [ sk( & B6( [ s( & •k 3.9. 32R.L!"#,!b!$LH 2]GC)+["#T.0!1(."#./N.2 +4 3.10. 32R.L!"#,!bsaiLH 2]GC)+["#T.0!1(."#./N.2+4 3.11.32R.L!"#,!bsaiLH 2]GC)+["#T.0!1N.2+4 3.12.D(32R U32R.c!$LH 2]GC)+"20."#H .0!1( 20."#(0 .0!14 3.13. D(32R U32R.csaiLH 2]GC)+"20."#H .0!1( 20."#(0 .0!14 Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 6 56 >6 ?6 B6 > [ [ > [ [ > [ [ > [ [ 56 >6 ?6 > [ [ > [ [ B6 > [ [ > [ [ 56 >6 ?6 B6>2? > > > 56 >6 ?6 > [ [ > [ [ > [ [ > [ B6 [ 56 >6 ?6 B6>2? > > > 56 >6 ?6 B6 > > > > 3.14. D(32R U32R.c!$LH !'GC)H .0!1(f."#"#:4 3.15 D(32R U32R.c LH !'GC)H .0!1(f."#"#:4 3.16.[;!+."#./.itu!=()('!2272L2AGC)6B0!1+#- ."#7 '!;jUqit5u6h8).9:!+."#!7o6j k t&u6?GC)H )('!77!;L4 56jUptDu6 >6jUltDu6 ?6UjtDu6 B6UktDu6 3.17.;LGC)+";20."#(04 >6 Z12L'!;.0!1 >6Z12L.!'(0 ?6Z12L.1E3(0 B6Z12L<E!'(0 3.18.?GC):(;f."#./3(97!;Ln:<4 56 ?.3(9n: >6'<E3(9G! ?6af20."#-Fn: B6?'!;.0!1G! 3.19.;LGC)T.0!1+#(f."#(0<9; 56.f."#>6f20."#H f?6!'<EfB6f20."#(:;].f 3.20.&I'!;.0!1(."#(0nk`2!'<E."#nk`3GC)+"20."#456 <!J ?6np`>6nk` B6Gk` 3.216f2Lf."#.7.0!1+#- U)('(0f."#72AGC)4 56?7L<!J!;L #!JA2b(E >6&VFT !` ?6hLF+!EM B6& @! 3.226[;!;."#./.2+ .0!1kj37!;LGC)UkD6[;!."#./!7 rj37.;LGC)456jUpD ?6oUrD>6jUkD B6pUlD 3.236 f."#.W 27df20."#U!'<Ef;F!!'<E f 6f."#;7.0!1j53!;LGC)(0f;jUkD6&I.0!1(f i53!;LGC)(0f 456jUD >6jUkD ?6jUjiD B6jUpD6 3.24. [;f."#7ijj20U.ij6>I)('!(0f."#7!;L>skUi6j o D6?'!;.0 !1+#- f."#7(b,F,ZW456jUk56 >6j56 ?6k56 B6kj56 3.25. [;!+."#./.itu!=()('!2272L2AGC)6B0!1+#- ."#7 '!;jUqit5u6h8).9:!+."#!7o6j k t&u6?GC)H )('!77!;L4 56 jUp tDu6 >6jUltDu6 ?6UjtDu6 B6UktDu6 3.26. [;!+."#.l!=()('!7GC)>sjUiDS2L!'GC);7oj j 6B0!1 - ."#7'!;jUi5U38).9:!+."#p6j k &6?.!+."#./4 56ok >6oUk ?6r B6Ur 3.27. D+"H .0!1(0*jj20U' !!SGC)>srkUl6j p D6'<E20."#j6 ?'!;.0!1+#- Y204 56i5 >65 ?6j5 B6jUi5 3.28. ?.0!1'!;5+#(."#./N.2+6?GC)+M!."#j7!;L4 56k6jrD >6k6j i D ?6i6j r D B6jUi6j r D 3.29. B"#./N.7.0!1i5+#- 6?GC)+[7!;Lj i D6[."#;<G4 56 kj >6j ?6 B6k 3.30. D+"H .0!1(0'!;i5' !!SGC)>soUp6j r D6'<EH .0!1(0 4 56kj >6j ?6k B6 3.31. D+"H .0!1(0*jj20U' !!SGC)>srkUl6j p D6'<E20."#j6 ?'!;.0!1+#- Y204 56i5 >65 ?6j5B6jUi5 3.32. &' f+( )('7GC)>skij6j i D:(;f."#U.0!1+#(Y20 H f."#Zk53f20-F(:fG :UIf."#.ij 56qpmj20 >6pqmj20 ?6pqm20 B6pmq20 3.33. [;."#./N.7!+M f320(032R6?.0 !1+#- ."#./AQ:32]GC)+"•H 20(07L4 56N!CL:(: >6272L=N3(0UL( E ?6272L=N3(0UL( E (LB6N!CL,f.L Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 7 56 >6 ?6 B652? B652> >6 56 ?6 • 3.34. [;.0!1'!;i5+#(;."#./N.32R6 ?GC)+ ![2&- 12L IUI[2&!.0 !1pU!W(:=N32R!f,C - ."#./6 56> [ s> & ‚ 2] 2 d >6> [ s> & ‚ 2] 2 S ?6> [ ƒ> & ‚ 2] 2 dB6> [ s> & ‚ 2] 2 272L 3.35. ?GC)H ;.0!1N+!&.0!1kUiWUl6j i D6DE'!;.0!14 565 >6Uki5 ?6kUki5 B6oUki5 3.36. [;<."#(0<Ep*j20."#6B0!1+#(Y207'!;jUo56DEGC )+"H <6 56pUq6j i D >6oUq6j i D ?6kUq6j i D B6Uq6j i D 3.37. [;<."#(0*kp20."#UY20."#7.0!1'!;jUi5+#- 6DEF#GC) T"<WrUo6j i D6><EH <."#!74 56jU >6jUk ?6jUr B6jUm 3.38. DEGC)+"H 20(0."#./!*"U<E;20~ slU20< ~ k srU (Y20."#!7.0!1'!;sj5+#- 6>I 20."#W(d;=NU2.0 !1+#( 20d4 56mUl6j i D >6jUl6j i D ?6Ul6j i D B6kUl6j i D 3.39. DEGC)+"H 20(0."#./!*"U<E;20~ slU20< ~ k srU (Y20."#!7.0!1'!;sj5+#- 6>I 20."#W(d;=NU2.0 !1+#( 20S4 56kUq6j i D >6Ur6j i D ?6pUl6j i D B6oUm6j i D 3.40. DEGC)+"H 20(0."#./!*"U<E;20~ slU20< ~ k srU (Y20."#!7.0!1'!;sj5+#- 6>I 20."#W( =N272L 6 56lUl6j i D >6qUr6j i D ?6rUl6j i D B6oUm6j i D 3.41. ?!'C)(':(f."# .0!17.+U"fU!=!I4 56!'(02)('! >6!'N272L(9f! U)('! ?6!'N2L(9f! U)('! B6!',KfU)('! 3.42. ."#./N.!=27 U(F` <+ 2 732R6B0!1+#( ."#./7d'!;6D) ('. ."#./"#( 7(1: UW<T2d% 562d2k >62do2p ?62d2o B62dk2p 3.436 ![2&`;.0!1N.6G)[!I.0!1LF `<G)&!I .0!16;LH GC)+[2&> [ 2> & 3 56> [ sk> & >6> [ sp> & ?6 NM BB k = B6 NM BB p = 3.44.B0!1st5u+#(."#./N.6?GC)+![."#./jtu7!;L4 56k6j l tDu >6p6j r tDu ?6k6j r tDu B6p6j q tDu 3.45.D+"H ;.0!1(0'!;it5uGC)!!SoUp6j r tDu6'<EH .0!1!74 56jtu >6kjtu ?6kktu B6krtu 3.466[;.0!17'!;sit5u+#(;."#./NU.6?GC)..0!1#"#( +! [7!;L>sp6j i tDu6[."#;<G 56kitu >6jtu ?6itu B6kUitu 3.47.[;.0!1NU.7'!;kjt5uUGC)+![.0!1itu7!;L4 56l6j i tDu >6l€6j i tDu ?6p6j r tDu B6p€6j r tDu 3.48.[;.0!1+#(."#./NU.6D+!5."#jtuGC)..0!1"#( 7!;L k6j i tDu6?'!;.0!1+#(:."#456jt5u >6kjt5u ?6ojt5u B6ijt5u Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 8 [ & 3.49. ."#./NU. oktu(<<EU'!;.0!1+#(:."# sit5uU '!;.0!1+#(:."#k k 6[W(=Nk.0!1U<Gk.0!12.0 k ltu6GC)+[W<3.0!1 k 7 56'!; k skt5u2d2L >6'!; k skt5u2S2L ?6'!; k st5u2d2L B6'!; k st5u2S2L 3.50. ."#./NU. oktu(<<EU.0!1+#(:."# sit5uU.0!1 +#(:."#k k st5uS2L 6[W(=NH ."#2! ."#6?GC)+ [7!;L4 56iUj6j r tDu >6qUi6j r tDu ?6iUj6j q tDu B6qUi6j q tDu 3.51. ."#./NU. oktu(<<EU.0!1+#(:."# sit5uU.0!1 +#(:."#k k st5uS2L 6[W(=NH k.0!1<G .0!12 .0!1 ltu6?GC)+[7!;L4 56Uj6j i tDu >6U6j i tDu ?6Uk6j i tDu B6Uo6j i tDu 3.52. ."#./NU. pjtu6D( ."#7 .0!1d'!; s k s jjt5uUd+#- 6?GC).1 .0!1"#( +![W(=N ."#U.0 jtuU.0 k ojtu7!;L4 56jtDu >6k6j p tDu ?6kp6j i tDu B6oUo6j i tDu 3.53.[;f."#7ijj20U.ij6>I)('!(0f."#7!;L>skUi6j o D6?'!;.0 !1+#- f."#7(b,F,ZW456jUk56 >6j56 ?6k56 B6kj56 3.54.[;!+."#./.itu!=()('!2272L2AGC)6B0!1+#- ."#7 '!;jUqit5u6h8).9:!+."#!7o6j k t&u6?GC)H )('!77!;L4 56 jUp tDu6 >6jUltDu6 ?6UjtDu6 B6UktDu6 3.55.[;!+."#.l!=()('!7GC)>sjUiDS2L!'GC);7oj j 6B0!1 - ."#7'!;jUi5U38).9:!+."#p6j k &6?.!+."#./4 56ok >6oUk ?6r B6Ur 3.56.D+"H .0!1(0*jj20U' !!SGC)>srkUl6j p D6'<E20."#j6 ?'!;.0!1+#- Y204 56i5 >65 ?6j5 B6jUi5 3.57.?GC)H ;.0!1N+!&.0!1kUiWUl6j i D6DE'!;.0!14 565 >6Uki5 ?6kUki5 B6oUki5 3.58. ."#./N. ;<Gf!bpk6B"#CF .0!1o5U."#C .0!1Ui5UI .0!1dUM!+!7GC)W<W(:!'N4 562L U k 2 kl >6WM ."#./U(=N22L U k U k p ?6(=N22L U k UW<GM .0!1 k p B62L U k 2 k kj 3.59. ."#./N. ;<Gf!bpk6B"#CF .0!1o5U."#C .0!1Ui5UI .0!1SUM!+!7GC)W<W(:!'N4 562L U k 2 kl >6WM ."#./U(=N22L U k U k p ?6(=N22L U k UW<GM .0!1` k k pk B62L U k 2 k kj 3.60.[;<."#(0<Ep*j20."#6B0!1+#(Y207'!;jUo56DEGC) +"H <6 56pUq6j i D >6oUq6j i D ?6kUq6j i D B6Uq6j i D 3.61.[;<."#(0*kp20."#UY20."#7.0!1'!;jUi5+#- 6DEF#GC)T "<WrUo6j i D6><EH <."#!74 56jU >6jUk ?6jUr B6jUm 3.62. S."#!*f !Sf <."#(0U<CFZ7;20U<C 7k 206&f !`Y<2 8H Y*!1!.0!1+#(Y20H < 6 VGC)+"H <L2L :`4 56 >6 ?6 B6 Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 9 4. Lực Lorenxơ 4.1.h8h(A,.9:+ !1E-.#!;2L2f2()('!72AGC )S2L2A2f;7x4 56 „s-2>x >6„s-2x•> ?6„s-2>x B6„s-2x•> 4.2.[;!1Ej r ? #2L2fj p •,:7oj j 2L!'C)2;)('!7!;LjUiD6 ;L8h(A,.9:!1E4 56kUi&?6ki&>6ki k & B6kUi& 4.3.h8h(A,4 568).9:+ !1#!;()('6 >68).9:.0!16 ?68).9:+ !1!=!C#:()('6 B68)..0!1#.9:.0!1 < 6 4.4.?H 8h(A,!S,!bW4 56OK #(6 >6OK #G6 ?6OK!f6 B6OK2=$ 6 4.5.?H 8h(A,9;2 56?#!;H + !16 >6?H !'C)6 ?61EH + !16 B6?Go#If(: 4.6.;LH 8h(A,!SEAC 56 vBqf = >6 α vBqf = ?6 α qvBf = B6 α vBqf = 4.7.H 8h(A, 56D(d2LH 2AGC)6 >6D(d2LH 2A2fH + !16 ?672L=NST2A2fH +22AGC)6 B6D(d2L=N+T2A2fH +22AGC)6 4.8.D(32R 3Z!$LH 8h(A,.9:+ !1.#!;() ('!4 4.9. D(32R 3Z!$LH 8h(A,.9:AA(2+ !1.#!; ()('!4 4.10. D(32R 3Z!$LH 8h(A,.9:AA(2+ !1.#!; ()('!4 4.11. D(32R 3Z!$LH 8h(A,.9:AA(2+ !1.#!; ()('!4 Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 10 v 2 56 v > >6 2 v > ?6 2 2 v > B6 2 v -ƒj > 56 2 v A > >6 > 2 v -ƒj ?6 B6 > 2 A vs j 56 2 v > -ƒj >6 2 v A > 2 v ?6 > -ƒj B6 2 v A > 56 > 2 v -ƒj v >6 > 2 A ?6 > v 2 -ƒj 2 B6 > v A [...]... giỏc trong trng hp ngi y ngm chng vụ cc l: A 25 B 20 C 5 D 4 Cõu 110 : Cụng thc tớnh s bi giỏc ca kớnh lỳp khi ngm chng vụ cc l: A G = /f B G = k1.G2 C G = Đ f1f2 D G = f1 f2 Cõu 111 : Kớnh lỳp dựng quan sỏt cỏc vt cú kớch thc A nh B rt nh C ln D rt ln T Vt lớ THPT Phan Chõu Trinh Qung Nam Trang 24 cng ụn tp mụn Vt lý 11 - HKII Cõu 112 : Phỏt biu no sau õy l khụng ỳng? A Khi quan sỏt mt vt nh qua... bay vo trong t trng u cú B = 0,5T hp vi hng ca ng sc t 30 0 Lc Lorenx tỏc dng lờn ht cú ln 8.10-14N Vn tc ca ht ú khi bt u vo trong t trng l: T Vt lớ THPT Phan Chõu Trinh Qung Nam Trang 11 cng ụn tp mụn Vt lý 11 - HKII A 107m/s B 5.106m/s C 0,5.106m/s D 106m/s 6 4.24 Mt electron chuyn ng vi vn tc 2.10 m/s vo trong t trng u B = 0,01T chu tỏc dng ca lc Lorenx 16.10 16 N Gúc hp bi vộct vn tc v hng... (cm) Cõu 117 : Mt ngi cú khong nhỡn rừ t 25 (cm) n vụ cc, quan sỏt mt vt nh qua kớnh lỳp cú t D = + 20 (p) trong trng thỏi ngm chng vụ cc bi giỏc ca kớnh l: A 4 (ln) B 5 (ln) C 5,5 (ln) D 6 (ln) Cõu 118 :Mt ngi cú khong nhỡn rừ t 25 (cm) n vụ cc, quan sỏt mt vt nh qua kớnh lỳp cú t D = + 20 (p) trong trng thỏi ngm chng cc cn bi giỏc ca kớnh l: A 4 (ln B 5 (ln) C 5,5 (ln) D 6 (ln) Cõu 119 : Mt ngi... nột trờn mn t cỏch vt 45 cm ( AB ln hn vt) T Vt lớ THPT Phan Chõu Trinh Qung Nam Trang 27 cng ụn tp mụn Vt lý 11 - HKII a) Xỏc nh v trớ nh, s phúng i V nh theo ỳng t l? b) C nh vt, dch chuyn thu kớnh v phớa no so vi thu kớnh vi mt on bng bao nhiờu thu c nh cựng chiu vt v cao gp ụi vt? Bai 11: Mt ngi cn th khi v gi mt cú khong cc cn l 50cm v khong cc vin l 2m a nhỡn rừ vt rt xa mt m khụng phi iu... ng t B v quay khung theo mi hng.T thụng qua khung cú giỏ tr cc i l 5.10 -3 Wb.Cm ng t B cú giỏ tr no ? A 0,2 T B 0,02T C 2T D 2.10-3T T Vt lớ THPT Phan Chõu Trinh Qung Nam Trang 14 cng ụn tp mụn Vt lý 11 - HKII `Cõu 21 Mt hỡnh ch nht kớch thc 3 (cm) x 4 (cm) t trong t trng u cú cm ng t B = 5.10 -4 (T) Vect cm ng t hp vi mt phng mt gúc 300 T thụng qua hỡnh ch nht ú l: A 6.10-7 (Wb) B 3.10-7 (Wb) C... cỏc ng sc t nhng dõy dn luụn song song vi cỏc ng sc t Cõu 30 ln ca sut in ng cm ng trong mt mch kớn c xỏc nh theo cụng thc: T Vt lớ THPT Phan Chõu Trinh Qung Nam Trang 15 A e c = cng ụn tp mụn Vt lý 11 - HKII t B e c = .t C e c = t D e c = t Cõu 31 Hin tng cm ng in t trong mt mch in do gõy ra gi l hin tng t cm A cú cun dõy nm trong mch ú B dũng in khụng i i qua mch ú C s thay i t trng xung... Cng dũng in qua ng dõy ln C Dũng in gim nhanh Cõu 42 Phỏt biu no sau õy l khụng ỳng? I C I D B t cm ca ng dõy ln D Dũng in tng nhanh T Vt lớ THPT Phan Chõu Trinh Qung Nam Trang 16 cng ụn tp mụn Vt lý 11 - HKII A Hin tng cm ng in t trong mt mch in do chớnh s bin i ca dũng in trong mch ú gõy ra gi l hin tng t cm B Sut in ng c sinh ra do hin tng t cm gi l sut in ng t cm C Hin tng t cm l mt trng hp c... gim u theo thi gian t I1 = 1,2 (A) n I2 = 0,4 (A) trong thi gian 0,2 (s) ng dõy cú h s t cm L = 0,4 (H) Sut in ng t cm trong ng dõy l: T Vt lớ THPT Phan Chõu Trinh Qung Nam Trang 17 cng ụn tp mụn Vt lý 11 - HKII A 0,8 (V) B 1,6 (V) C 2,4 (V) D 3,2 (V) Cõu 58 Dũng in qua ng dõy tng dn theo thi gian t I 1 = 0,2 (A) n I2 = 1,8 (A) trong khong thi gian 0,01 (s) ng dõy cú h s t cm L = 0,5 (H) Sut in ng... tia khỳc x vo mụi trng 2 B gúc khỳc x r ln hn gúc ti i C gúc khỳc x r nh hn gúc ti i D nu gúc ti i = 0 0 thỡ tia sỏng khụng b khỳc x T Vt lớ THPT Phan Chõu Trinh Qung Nam Trang 18 cng ụn tp mụn Vt lý 11 - HKII Cõu 14:Chn cõu ỳng nht Khi tia sỏng i t mụi trng trong sut n1 ti mt phõn cỏch vi mụi trng trong sut n2 (vi n2 > n1), tia sỏng khụng vuụng gúc vi mt phõn cỏch thỡ A tia sỏng b góy khỳc khi i... 48035 Cõu 30: Cho mt tia sỏng i t nc (n = 4/3) ra khụng khớ S phn x ton phn xy ra khi gúc ti: A i < 490 B i > 420 C i > 490 D i > 430 T Vt lớ THPT Phan Chõu Trinh Qung Nam Trang 19 cng ụn tp mụn Vt lý 11 - HKII Cõu 31: Mt tia sỏng n sc c chiu t mụi trng nc ra khụng khớ di mt gúc ti i khỏc 0 Nu gúc ti tng lờn hai ln thỡ: A Gúc khỳc x tng lờn hai ln B Gúc khỳc x tng gn gp hai ln C Gúc khỳc x tng lờn . !1.#!; ()('!4 4 .11. D(32R 3Z!$LH 8h(A,.9:AA(2+ !1.#!; ()('!4 Tổ Vật lí THPT Phan Châu. !'C)oj j 6h8 h(A,.9:+7!;Ll6j p &6fH +!7<K!`2()('4 Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 11 v > 56 2 -ƒj >6 A 2 v > B6 A v 2 > v > ?6 2 -ƒj > v 2 56 v > >6 2 v > ?6 2 2 v > B6 56j q •. .0!1!=()('!Z12L'!;.0!1( !+."#6 >6h8).9:;!+."#./ .0!1!=()('!Z12L.H !+."#6 Tổ Vật lí THPT Phan Châu Trinh – Quảng Nam – Trang 2 56 >6 ?6 B6>2? > > > ?6h8).9:;!+."#./