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          0 cos 100 3 u U t π π   = −  ÷    !"#$%&'()*+,- 4 2.10 π − . /0$12' -3%$%&)4"56$7*81-(,9-:#-';*$4"</2$=**>%*81-(,9- :#-';*$4" / 5cos 100 6 i t π π   = +  ÷    / 5cos 100 6 i t π π   = −  ÷    / 4 2 cos 100 6 i t π π   = −  ÷    ?@A#%B*$CD 6 *#Eω*+ 6 F$G-H!"ω$%BH8I*!"#$%&#;';*$*+JKLK 'M*NO/$%BHω$7*81-(,9-$,)-:#-';*$F$ωDω  PQ-*81-(,9-$ ,)-:#-';*$F$ωDω ? /$=*R-4"@ / 1 2 2 LC ω + ω = // 1 2 1 . LC ω ω = // 1 2 2 LC ω + ω = /S/ 1 2 1 . LC ω ω = / TU$$$OF$G-HT6!"#$%&#;';*$-V':W$&'M*NO!X*(*Y' $&*+(Z*Y' 1 4π  $7,9-:#-#;';*$4",9-'(*$C*+*81-(/O!"# $%&#;';*$"B u 150 2 cos120 t= π  $7P2$=**>%*81-(,9-:#-#;';*$ 4" / i 5 2 cos(120 t ) 4 π = π −  // i 5cos(120 t ) 4 π = π +  /S/ i 5cos(120 t ) 4 π = π −  / <$#K[K4"T2'4\O:\'(#;';*$A#%B*$CF$G-$$$KPOP2$=*$ $O:\**#;[K[4&48I4"@ [ D<6*#E]^_`a  b  [ D56*#E]^_`?  /$O*Z*;-3%$%2'K*+-:c /a6K?T / /deK / /d?K5 / S/f6 / 5#%  '%  *$*# g \  :h i $K*G  ,B$*% i '!%    \  'jg*Gg \g/4%  'G  \ i ':\!h g   D*#E66π !%    D*#E66πk  /l  'P\ i $8 g *$\  \  $\g  / / u 2 2cos(100 t) V AC = π / u 2cos 100 t V AC 3 π = π −    ÷    / u 2cos 100 t V AC 3 π = π +    ÷   a @$#';*$F$G-$$$-V'JD66√TΩK*(,B$&*Y'L!")D6 k< `?π. / !"#?&';*$'($$OD66√?*#E66π/O L D56K,9-$%$$%$h /mBn$L /LD6KTeb /LD6K5fb/LD6KaTa/LD6K5fb d@[(oN-8I*'M*!"#';-A#%B*$C&ENpD56q KD??6 /O:Q-o*$rE-F$ $$O-3%$%*Z**>%o;-:c≥55 /:#-'(*$Fs$1-%oE-4"@ / 100 1 E / 100 2 E / 300 4 E S/ 100 5 E e@$#';*$JKLK'M*NO  Dd6*#E66π /EN*G-Et*>%#"';*$4"*#Eϕ  D6Ka!"$EN *G-Et*>%#;';*$4"*#Eϕ ? D6Keb*(,B$&*Y'/$u*R-v /  Dfa /  Dd? /  Df6 S/  D56 f@$#';*$JKLK'M*NO!X t100cos2200u AB π=  /wN*$r:\$%!GFO4"$8$% $8--:c=*$1*>%*$R-4*$$%$% 3 2 π /*!GFO*$r-:c"#E%Bv RL 4\  *$$% 6 π E#!h g  /66 /?66 /T66 S/<66 6@$#';*$$8$7$!xK π = 6,0 L  K π = − 4 10 C . K:DT6Ω K  D66 2 *#E66π /G-Et :\J4X$tF$J*+-:c@DJ 2 I DJ /<6Ω /T6Ω S/?6Ω /56 Ω   @$#';*$$8$7$!x!X  DT66 K  D<6 K,9-:y$%E#!X  '(-+*ϕ*#Eϕ D6Ke K*(,B$&*Y'/GFO*$r-:c@ /66  Ω= 240 R u @ Ω= 320 L u @- 75,0 = ϕ /?66 /T66 S/<66 R B C L A N V R B C L A V 1 V 2 R B C r, L A R B C L A N V  ?@S9-  A#%B*$C$7$E*$;Bz% '(#; ';*$  *+P2  $=* *+P2  $=**81- (  4"       −= 2 cos 0 π ω tIi K 6 {6/n$|4R* )(0 st = K48I-*$B2z%O,$}-*>%,B,~*>%#; ';*$+:#-$1-%PQ-•%*$F7*>%,9-4" / ω π 0 2I / /6/ / 2 0 ω π I / S/ ω 0 2I / T@$#';*$$8$7$!x$(Fn-V''(:#-P%$&•c\:W$&K*(,BK)/U$ !"#A#%B*$C*+  D?56$7 [ D56!" [ D?66/(Fn4"@ /(,B*Y'$&//(,B*+:WF$*F$G-/ /)/S/:W$& <@[(,9-A#%B*$C*+*81-($,)-4"*+&EN 4"p$7 48I-z%O,*>%,B:#-$1-%'(•%*$F7F2|F$,9-PQ-F$G-4"@ / 2I f π / 2I f π / 2 f I π S/ 2 f I π 5@$#';*$A#%B*$C$8$7$!x    D?6 2 E66 π   KEN*$r!GFO4"?6!" [  EX'$% $h  '(-+* π `?/O 2 ω ≠ `L !"LD`? π  /€*(,B*+ :W$&F$G-vO*+K$mBn$-:c:W$&*>%*( ,B!",-*>%)/ /*+:W$&b:D56 Ω bD6 k< ` π  . /*+:W$&b:Da6 Ω bD6 k< `? π  . /*+:W$&b:Da6 Ω bD6 k< ` π  . 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