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习题练习：Physics Unit19: DC Circuits
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 作者: admin  发布日期: 2022-08-17 15:49    总分: 102分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月17日 12:52  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminals of a batapj/e3 rkw cy2 e./+aatery, when no current flows to an externaeap c/32 + jwekyra/.al circuit, is referred to as the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference betlra6eos5t4 ew o*m,iv*one );ween the terminals of a battery, when current flows to e4tiae5nvlo rs m,e*)o*;6w oan external circuit, is referred to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in series to a bcz/u ilg 8 zan/;yn,e9attery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are conqnuaa +*jsyhm-f5473d.3m nrzq n+ ufnected in series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a baw- 5 pqjv.3mjsttery. If the current of 12 A flows from the battery, how much current flowmw- p q.3vs5jjs through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a 12-V battery. 01fljz :ilmk1 1 yiel6What is the voltage across any one of the resistoeli1 01l6jm zy1:lkif rs?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in seriescm84+ 3lgdet.zpxmb) to a constant voltage source, the power supplied by the sbezdp g t)+mm3x.l 48cource

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connec9 *5qttf3g 9;xkfu 5cpde cqm,ted in parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in paral 5k8hfft;k z;9-be ,ke /yvonxlel, we can be certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected 5x( fg)*k;3uzcq h cbpin parallel to a 12-V battery. What is the voltage of any one of thexbpf5chqu)c z3; k g(* resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are conn/ q gl dn;*iswnzs76nwx 4qj7a:+w3fcected in parallel to a battery. If the current of 12 A flows from the battery, how mucn7i6x7 cdf sqlq sa/wj:wn n* 4w;zg+3h current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string nwikys d) 86tvrmh-)) of Christmas tree lights are connected in parallel. What happens if one lamp burns thi8)mwy-) )kvrsd6n out? (Assume negligible resistance in the wires leading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added inityaj0)v02./ -q1mxj tzbpr k parallel to a constant voltage source, the power s2xb t/ktv-pr0amy qj)jz0.i1 upplied by the source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each of resi oi:evr7ax,j .4xm 9reyvv68istance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallel with these two. What is the maximum power this network cana7y : i98 mi6e xvv.e4roxjr,v dissipate?

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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's juncr5ztjcg:e6y w1t:8f x tion rule.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loop rule.za.wtb4pk+e f r2+cx 1
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rule is an enn9 pd f+z-oc2xample of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction rule is an examplv:da6jv,q hmn0p95wu(w*tg95gu x gme of

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the equations here is valid for the circuit f,-hwqco:k xi ick ,- jo+ht9 uz;h2+sshown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in s)y z 9e4)fqohnrvj*gr 2ts*eu6 v1i b)eries ("+" to "-" to "+" to "-"), and place tbzr 9hir) 2*ueov)6*qvjgf 1te nsy)4 hem in a circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical stoj, .bljnyda29 8h+(:ye brcaj rage batteries together in series ("+" to "-" to "-" to "+"), and plhja jbac9y+ (:r.y,82dne lbj ace them in a circuit, the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two id3 gqsmio1k,82 qqgybt893ebi entical storage batteries together in parallel, and place them in a circuit, the combination will pr31ge9 3mg8 oi2b qqsbykt8, qiovide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors a g5;t*bewt0tb re connected in series to a battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in series, thz -3gps 9lqx3e m089z tmlskfk v-nl:c1y-yo/e equivalent capacitance of thogs1 3mpk9zc0-sfk qe9 z8v -:x lmlnyt3/yl-e combination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connt+:ocjvgjrya)64*m i 6tdty ipz,44n ected in series to a battery. If a total charge of Q flows from the battery, how much charg dip t)o46+ajyrjg4vt4mt6yn c:z ,*i e does each capacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in parallel to a bds:)t9n u n9odattery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel, the equivalent capacita09fxos)ietcnu h+;r8lbh, ug7-d0jonce of the combination increasesouxf;h ,- s07l0detuj8on 9 +hbi )grc.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in parallel to a battery. If a sxunq3nww .41,o*ca gtotal charge of Q flows from the battery, how much charge does each capacitor ca1sqa ,wcgwounn.*4 3xrry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for gj6rkc .t89 rpthe quantity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connect sdyp):fu5f3;7xmaum ed in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, tdampf;u3 )um7yxfs5: he voltage across the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal battery pcjfq:b.4zeg v8 e3n:of constant terminal voltage. At the moment contact is made with 3vgejzc: p b.f:8eq4nthe battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected io 5bgj q* jvp0/m1u1xkn series to an ideal battery of constant termina1k* xj0jgo 15v mup/bql voltage. When this system reaches its steady-state, the voltage across the resistor is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shou*ri :xnw dp: 3l2gei28ql-ljlld

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can be cou5a6rq):6rrtjb(x80drgene 1ts oe( nverted to an ammeter by the addition of a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obtained by properly plat*:8;ec dgk c;(uor8c cmwo u.cing an ammeter in a circuit consisting of one resistor and one;8m; c(ou cocte ucgw 8.k*:rd battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammetrx 9s)hjsjb( ,f;7fhoer's shunt resistance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construct a voltmeter from a galvanometer, one 4*rfhl0dd5 xj normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmef jy7s 0 xw)n7w1wy9rbter's series resistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a voltmeter across a resistor+vc :j4gib rhoz5xr a7q d,01r. What happens to the total current flowin vb:,r401 j5cq o+rhg7ixdazrg in the circuit as a result of this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an aj ;)7vjgt*)jj x xi9qsmmeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter readingjx 7xvig*j)st9) jj;q by the ammeter reading, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in -e d/e;uq96e 9lv/5*qtpc p- phfxmpbseries with an ammeter, and a voltmeter is placed in parallel across the resistopp/v he/u qpe9 t;6m-p5fdclx*be q9-r only. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12o) qndlmpbn354 h2 2ouhue;*u, 3.0, 5.0, and 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12,59p8i9:cnnyx j a)v gm and 6.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and 6inc+ 8p qo2tpp)muz 9lmm9.vy gm29t..0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a seriribt1x h5cx3l *4*cigu x.a 5ges combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into1wzo-b6 ef;l mru-*ht a series combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combg 43jxqgv )mkr 3*yya/ination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel /qy ps qoqgr7uh1l; i1df),n6combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combinatio.jta:3ycs6rb7 xa. 7lxcr vo*n of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V 9vhl*o;7 8/h febwwqy. ec rq2circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current wefl8*2v/qr9h7y c;oh. qb wew ould they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum number of 100-W ligb+lta f9r4dqzh73g*o ht bulbs you can connect in parallel in a 120-V circuit without qd* 3g h4fozlrtb+7a9 tripping a 20-A circuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.03 pgdk18 /j8cd syxf ;k-l8okf $\Omega$ resistor connected in series with 4.0 $\Omega$ resistor is connected in parallel with a 3.0 $\Omega$ resistor. What is the equivalent resistance?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two 4.0 $\Omega$ resistors are connected in parallel, and this combination is connected in series with
3.1 W. What is the effective resistance of this combination?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0 $\Omega$ resistor is in series with a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What is the equivalent resistance of this combination?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 15 and 3iw 6txfwo.g-q6 vj3: f0 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, advj 5m0 1va:m ,w (6)3vyetwffvycs 4snd 10.0 $\Omega$ are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0 $\Omega$ resistor, what is the current through the 10.0 $\Omega$ resistor?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 orvzpcl m m 27+b24*1b fvoqilzu)u6 6and 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 4.0 $\Omega$ resistor?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 yd( - koj6crc9and 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 5.0 $\Omega$ resistor?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 an2eb8d(3pds sir/dxs v;v k iuu29k .d.d 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 9.0 $\Omega$ resistor?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.0 $\Omega$ resistor is connected in parallel with a 6.0 $\Omega$ resistor. This combination is connected in series with a 4.0 $\Omega$ resistor. The resistors are connected to a 12-volt battery. How much power is dissipated in the 3.0 $\Omega$ resistor?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the circlw*f5 )euz(gruit in Fig. 19-2?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 40 \; V$, what is the voltage on R1 in Fig. 19-2?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 20 \; V$, what is the current through $R_3$ in Fig. 19-2?


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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If 1.5 A flows throug.e-81zizay ifa1yc77cd np t8h $R_2$, what is $E$ in Fig. 19-2?


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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the ciobped )o v(heh7+u59ddk4s9;l nr-p lrcuit in Fig. 19-3?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 100 \; V$, what is the voltage across $R_5$ in Fig. 19-3?


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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 4.0 \; V$, what is the current through $R_6$ in Fig. 19-3?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, des x0bu/0e*bep04 i scatermine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine thxm )kk:5 lkm(ge current in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Figmjg xg q w101t/rx( 9xgif*j1b. 19-4, determine the current in the 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential2y k g1 ;xrfxu dtwlwgr91*;l: tqy(:l of point A relative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relativez0 .+)lqqdg 5qyhyf b, to point C in Fig. 19-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point D relative lr5ii 5(.x4 qhx0 uf(rahciikr /q26pto point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from the batterast ejrf ;63q;y in Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point Ar-m6w.xk6jr/rubdhf;6teb 9b 6kb8r to point B in Fig. 19-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current i4jzs6z) a n3lgn the 7 $\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in thedxut;r3 nsa6t ct0 kzi 47d*1w 8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in theh7cesv6ir*) qxg-ro2 qm5o 9 jf pqa.1 4 $\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in tsq y+c47v)nw2u ee4yvhe 12 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in taro8ms7npz/n 9 380e4sdrtqo he 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the o3 k9/hmk 4vewupper left and lower left corners?ek3wk 9 m/4vho

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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 16 mF capacitors ax 2 ()b3j mc4dhks+ pevub6g1tre connected in series. The equivalent capacitance of this combination hmj ) pb2+ e6vgdb43ck ux1(stis

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connef+0vt8yy 8twncted in series across a 12.0-V battery. How much 8ntwvy08 +tfycharge is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in seriesv-;4novq b5:zj a7jbz across a 12.0-V battery. What is the potential diffe van- q:bo5;j7zj4 vbzrence across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series across a3j0ggy;a y7n y 3.0-V battery. What is the voltage across the 1.0j3yy7ga ny;g0-mF capacitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected hy jao6e- gj:h0.2ozx in series across a 3.0-V battery. What is the voltage acra :6j0oxg.-zyhjh2 oe oss the 2.0-mF capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors are connected in parall 8 7frhzjut-c,el across a 24-V battery. How much energy is stored in this co8fu,j7c-tzr hmbination when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mm;a2gnhk8 of q8 a8uy,F are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of , of8angahk2yu88mq ;this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mgqv 2k-2c9q5h iky:epF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. W-kyk2eqqgh5 cpv 2i 9:hat is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. T xt6lqjo 8bfx7 bgli+1aa.d *l;:/auahe combination is then connected in series wit 6qjx biba l.dlxoaatf8+g7al / *1:;uh a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. The combiqjaja. k).sr.f)4vb mfj(xj 5nation is then connected in series with a 12.0-V battery and a 14.0-mF cap jqsmja54j.xf )jbkr f.(v) a.acitor. What is the voltage across the 6.00-mF capacitor?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charg:gxrj ,xt 7w5qr20p czed through a 50 $k\Omega$ resistor. How long does it take for the capacitor to reach 90% of full charge?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged to 12 V and then discharged thnw 7bbr /jo8yi 5,c-zfrough a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a 0.50-mF capacitor. l 2hd kyc txkyv9m+ot,-3as -+The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change +d o+h -39vsyctkyl x2,a-m tkin voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged to 6.0-V. It is then c5:ws ,r 21q+qkjo kvoaonnected in series with a 3.0kvqwr sk o,o1j25 a+q: $M\Omega$ resistor and connected to a 12-V battery. How long after being connected to the battery will the voltage across the capacitor be 9.0 V?

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99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an t0pv3so0i: tq0;k 2allz te-zinternal resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a coil wit :4d vns f(6ozea.pqw5h a resistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an ins,duerttt :2bhv)oj u6y sye 5(*2.kj ternal resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer with a c t -kvfh/uas jh0t3*b,oil resistance of 40.0 $\Omega$ deflects full scale for a current of 2.0 mA. What series resistance should be used with this galvanometer in order to construct a voltmeter that deflects full scale for 50 V?

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