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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: 匿名未登录  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 battery, whent pu1y*+4 l7gl5j+zyjdb lz5x no current flows to aj yzglt17uxz4+ j*dll55 byp+ n external 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 between the terminals of a battery, when curren j(v;i;beg 9sat flows to an external e(gsbij;a9v ; 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 connecte*3ixb7kbco 4 /p e (jtubn5id*d in series to a battery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are con8cpt00zu ax8+3b u0 iaov:mvmnected 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 battery.78 -ebbn a :ocwvg3cf4 55zode If the current of 12 A flows from the battery, how much current flows through any neo4d 8e obw3-75fabcg :vc5z 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. What is thy.+o sxac90z(qe t,e p*cb)rxe voltage across any one of the*c0s, tqreyze x oax )b9.c(+p resistors?

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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 serie gs,;jvk18em/bwk y4q/6r ml es to a constant voltage source, the power supp1 6q;kgrbksl 8w4 e /em/mjvy,lied by the source

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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 are4,. 20lutk idy 1nmoef connected 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 connecn*qf gag53mq0u e*s,l ted in parallel, 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 coniom(yar-*n i :nected in parallel to a 12-V battery. What is the vorn (oi *aym-i:ltage of any one of the 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 y2-3e9wy 4:zc frfnqp1w6/f e tmxx 1yconnected in parallel to a battery. If the current of 12 A flows from the battery, how much curpyf -y1w12n/xtw 9 3xz46eferfcqm y:rent 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 of Christmas tree lights are connected in paq+:mxf(j /u w e17if w-aqgqy8km3 u6prallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to theu/qqq6mywiw a-1 mfj :ux8f 7 k(+gep3 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 in parallel to akadxdt9 :i *e, constant voltage source, the power supplied by the *atki :9d,dxe 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 resistance R. The maximum power e4( lqq9v;msq tach can dissipate is P. Two of the resistors are connected in series, and a third is connect4 9lqt;mv qqs(ed in parallel with these two. What is the maximum power this network can 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 junction r+w, l5*n0qbo qh0trlpule.
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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 * hq36ax t n8aq1+xz3gfjj(qqrule.
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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 t3ea )b/c2 i;ympl a*gis an example 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 c5jly (us 8gbm .lvx-q48yrz3rule is an example 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 s:o:lxlf40myi hown?


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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 tor9 vvw ytt,r*0a vvq;-gether in series ("+" to "-" to "+" to "-"), rt -; vwvqv,*0atv 9yrand place them 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 stojqa) 4 4b;qozu t0-xtw0eoc:o rage batteries together in series ("+" to "-" to "-" to "+"), and pla wo otq-x4);u :0zobjqe ta04cce 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 identical storage batteriest ): :zkjv7nyn together in parallel, and place them in a circuit, the combination willjn:y:)nkv t7z provide

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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 are connected in series to a bat7/lz c j0(n)lsv/ zowvtery,

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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 (d/ae2n-6jjm9knfsl 0b5 dhe equivalent capacitance of t6 hk2dda(fs jbm0- nn9lze/5j he 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 connected in series to a battery.yj,r4r j/t p ziq5d nbq8p9.v2z n0c(n If a total charge of Q flows from the battery, how mz0 vyr4tiq 9nppd(bz,n./85q c j2nrj uch charge 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 capacitorv(tr:f jy y+e,y2h,ccv3aa p8 s are connected in parallel to a battery,

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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 pf:g1 ya5k gb7rarallel, the equivalent capacitance of the combination increas7:51b g fkrygaes.

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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 parall5 x 9w3 3we*uw*wgxyx28jbx ye3 :jpfbel to a battery. If a total charge of Q flows from the battery, how much charge doexx u* w39gb2x38jwb 5* 3e yjpy:xwfwes each capacitor carry?

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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 the quanb40;i gt:(s ylazcgm *9o hyp9tity 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 connected in series to an ideal battery of cons+. d4q1ohdp5y3wi *co* rsz dhtant terminal voltage. At the yh+z*.or*5dhdpdo31w c4sq i moment contact is made with the battery, the 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 azz/a :(p gp w00cj9mbv.ff-mtn ideal battery of constant terminal voltage. At the moment con m0mb.-f jpat z0wzgf9p:(/ vctact is made with the 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 conneo(i;y d xx b9;s ,ot/wd)2zdbicted in series to an ideal battery of constant terminal voltage. When thisb/ ;dwd tio ,ox)b;ds2y (xi9z 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/78 mk;)wbq9z duwvl ofk, l;cld

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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 converted to an ammeteqowd .jrr31 s8.p wr1wr 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 placing an ammeter in a circuit consis 1)lo t9 +/cd2o3abhtm.lrfb ltinafm /2olt)bollc3r1. btdh 9 +g of one resistor and one 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 an5ea.ovy 5p8jdg1bvzv0;dnj6d nlo * 7 ammeter'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 v 1;vmf.h) b*d5jejzcqh-dwh x z4,n8poltmeter from a galvanometer, one 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 voltmeter's series re1zezc2- gim j3spx,v(.vnll/sistance

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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 obtained8qbd;bav7p g5/h8pb e3 +jciv by placing a voltmeter across a resistor. What happens to the total de+7j/pgi8 q 3hbb5vvacp;b8 current flowing 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 witg.sct; lcm;j j2y6 6mgh an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a.2tlc ;j;cyg6 sjm6mg 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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42#
 
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 2u6t dte8jpx5ai. o8 lammeter, and a voltmeter is placed in parallel across the resistor only. This net i8.u6o5lxjd2ta ep t8work 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 12, 3.0, 5.0, and 4.048;t4 ernhv ,zq cbae4 $\Omega$ 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,hph7r0/nw vizg e4, yke-s ;+z 12, 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 1s)iowg(ak 5)p k,h(sh2, 12, and 6.0 $\Omega$ 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 i, kk8 af9xgt86r0bphu nto a series 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 flowsd+ *tdl- g:* mzl*z +3j4skrce l:i26lacytms into 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 paralle. br*qaq0ch( reg k36tl combination 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 i tutnsmt1vp/-st0.b ; nto a parallel combination 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 combination of a b2sa 9b(dvxp9w i;v*62lxd d w4.0 $\Omega$, 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 circuit: . 8vtd 6gm/s tk1*x(/wjpfcxvrw k.l91200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would/crvfkj8l *xg 9mdwspwkv t.1x.(6 /t 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 light bulbs you can connect in jaa+po j:o: sczcf.lr:46j.fparallel in a 120-V circuit without tripping a 20-A cir fja.:o lc4c s:a6z.jo+:rfpj cuit 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 2.0l*.r(i/l vl,ho bet a h7,v6or $\Omega$ 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 30j:;p1a ap3:p8etimc gin n)iz;zd8 )k $\Omega$ 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, and 10.0 cl jkgrc 62 ja9:;jsuvg/1a+o $\Omega$ 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 9zwrhdp1u:22t fvd *70xwe -3bzgyeq and 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 and 9.0-9 gj ,ja+f0ny9zbvyc $\Omega$ 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 and 9.0yy h8-mi)d+- zqc9dv an2j0qy $\Omega$ 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 resq40ymnr*gxgq5hxku8qv56 w4istance of the circuit 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 through vb:vj1w.; h17wo- nsgxs o 8zf$R_2$, 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 ok,5afkt wx9(scsrke/ 5u0 kz :f the circuit 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, determine/h )tc-w,q*m3v jtfs r28zlus 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, dete7t3 gc1p k,efrrmine the 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 Fig. 19-4, determine ty.u;y4tz h;d)d5 gpq9pis5ec he 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 potential of point A relative to point C i9 4 3 cepmjd64xly,oawn 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 ql64ac ip5 4;s2cst;wf scu-rpoint B relative 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 relativqn,q0tpb+ p 3:-lhybn e to 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 batteryr2y, g9 8mxq,hg wip((jc2cwe 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 7 rr7i ()tyt z(-3wyb riwn )ksgt+6ilpoint A 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 iny6a ejgb5at* 9 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 the .q zwaped d1cgi(n9qlp1 -g7- 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 the4 +vj6ta w(.sv2m rxlv6 ekh(l 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 t6it;reca+ s0aj6l 8c i*3x.2k0vi8 ive zd solhe 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 the 18 nq63,,9 sf8ynysmo7ss-m xkb $\Omega$ 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 wzjqygdg: ,5uz; /a;u rire connecting the upper left and lower left corners?jgyzd/z5u, ;uga;: rq

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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 are connected in series. 3u :fa5i8k b,y dl8 hn0 dpuzzrhw8kq89.9a sc The equivalent capacitance of this combination fn8d3: 5ad qrk0, .i98p b9ha88hksy wzuclzuis

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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 o4bcj13:1. yt2gifo br*ebgv.0 mF capacitors are connected in series across a 12.0-V battery. How much charge is stored in the 5.0:b.21vg fecy bb o1o*tri3g4j 0-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 series acr+uqot1sgh.+tuxjnk c z )20irdk(ha o*h: 60 moss a 12.0-V battery. What is the potential udhncj)sh21 6r:++gu. khzt a0o q m k*io(0xtdifference 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 capa.1ks4zn pboa- ph )n+-ju(b3lh;nyj ucitor are connected in series across a 3.0-V battery. What is the voln-ap(.lz pnb-j3uyh;o 1 +jhk )4 snubtage across the 1.0-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 capacitto8)ffu *. wtw0vmo(xor are connected in series across a 3.0-V battery. What is the voltage fm8()t.vfu xw to*o0w across 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 parallel across; rj)xli/ze tpy esd41d3k. j*f)w0w l a 24-V battery. How much energy is stos*pizy jl;.4d1 jl3ew /xwdtr0)ef ) kred in this combination 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 mF are connected in paraz-1 tiqs(f,jzllel, and this pair is then connected in 1f (ztqz,i-jsseries with a 30-mF capacitor. What is the equivalent capacitance of 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 8.00avcyn 25i b)y m-fqu2q::dc4u mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. Whatc5v:u -b d y:uqcm2if4n)2qya 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. ddp1zn3ee6or(hpjs+3ng ,cmr5v )r4 The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF4e jnv5cn3mp p3d,s6)1zr+ g (edohrr 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 jgnn6z+w x w1r-c-8e 1an: pvsare connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage acgwz -jwpcan n8:6x1-1r v+ esnross 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 char s:j1 dd0vbdkd ly 0xd+p.z,3vged 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 ct:rm8e,lt0 m z b49vu5 vdl(emharged to 12 V and then discharged through 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. The capaca+w/ aqr g5rw3q8gyw3 itor is initially uncharged. The RC combination is charged by a 9.0-Vq awg +3aw/rg3yrw5q 8 battery. What is the change in 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. Itfb1 ip8rrb13 e is then connected in series with a 3.0 r1b8rpif b1e 3$M\Omega$ 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 zdhr .2 .ai-px-ldghw )1li4 ainternal 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 w uifxd uf2oo m5 c5noi;61z: j7x qp/m4xc5:fcith 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 internal resis s7tt ujy-*p lish-:*rr8 -ymetance 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 coil resistancevyp6 :s au1kf* 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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