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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 differ qoz+h,m1vv- hence between the terminals of a battery, when no current flowh hmz+v,-qvo 1s to an 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 differenky zjwm.j/ q0yuf2w 74o -a64pj g2ywpce between the terminals of a battery, when current flows to an external circuit, is rq02jg yfjou6/- j k a.y7wwzp4m2pw y4eferred 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 batttf- 1gjrs; ouz j7kqc./f, ,ajery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are c hnhz/a3 ox9;monnected 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 sermwo7b; -u2rm3c* .y u oc1 nx8a)jtxlzies to a battery. If the current of 12 A n )x;ua73-wo mzjrbmc*otc .yu81 x2lflows from the battery, how much current flows 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 connectenbj2tp u yw.tnrj;0:s 8d i*(zd in series to a 12-V battery. What is the voltage across any one *u;( .: 0n p2yzrsjbit8jwdntof the 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 ijpln6 q 6jn+9n e1.yuyn series to a constant voltage source, the power supplied by tn9 1y qp.6yel jnunj6+he 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 resistng,k/ v x1cj0bj)eo *xors are 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 connect6atqvl3 u1qq:bl-j 6t*cy-wzi * l7ited 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 connected in parallel to a 12-V battery. *vckrr(l+ oj 8What is the voltage of any one of the rerl joc+*8k(r vsistors?

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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 connecte cr6tsc8y/k c;d in parallel to a battery. If the current orc8ckcty/s6 ;f 12 A flows from the battery, how much 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 of Christmashpe3pmp1f2 6sxv4l uzw(s46s tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading tou6 (3lwspsp64v4pms ehx21zf 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 in parallel to a constajxr2; hp)nqklty/*pm/l y;6znt voltage source, the power supplied by the so /ty;62lr* );m nyxzk/lh qpjpurce

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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 resiss/py.k a 4hg*ktance R. The maximum power each can dissipate is P. Two of the resistors are connected in series,4hkgay/sk * p. and a third is connected 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 rulet-*;zx dkh c+gc+1h(:vjg3 a dne7 mub.
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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 rule8 puz5j m1h:;l peo/hw.
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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 example ofe.mhnum v25 ;p, hdbp5f m:oc1

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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 a pfv (s)9:vb2j-0)karqz zpo kn 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 circuibx,te: y(r/1oyf/6y p6uz1 fli i bot;t shown?


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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 storagefux 7v- 1arof7 batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combinatifa u7r voxf1-7on 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 ide,mo h k1w5ag( vbr8gl*ntical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination will provi wm*bg grv,k5ohl81a (de

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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 batterio8; 8jn5v( fft*kk dkjes together in parallel, and place them in a circuit, the combinj 58nfo k8jk(f; dtv*kation will 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 bag ko7r9lyx*2rttery,

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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 conne9n)tgeg;9fs67ph q3vgg ,,6rks lw5uqbm.qi cted in series, the equivalent capacitance of the cq , gn,u7 ft s5gwkgbeiqgm s69vl6rq. 3h;9)pombination 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 batterywru li*wh00 7 sptpj.;. If a total charge of Q flows from the battery,w*h w0s7pl0ipr. ut;j how much 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 capacitors aref5,p3 ahxb90pn:pl x(l6b2du qbt sv pd5 g.y/ 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 parallel, the equivalent capack: lep ur-4 p/hzif)o9qhk+/bitance of the combinationukfh9keo/ 4 p h+-rz):qbpil/ increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capasc 2)y 1 ftta98cndjutoeu8p(n(9q: hcitors are connected in parallel to a battery. If a total charge of Q flows from the bt 9adq) 8ucc u ntf t12ynje(ps(9o:8hattery, how much charge does 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 qo1act kn.3c0 idpq 07huantity 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 a)tnq pi 05)h7e; n/ b d+cti,holdygw*re connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, theyhg )l 5e q0it,* d) 7di/;bhw+tcnopn 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 of conb34 qp;x q1fic5 vzhr,stant terminal voltage. At thvc bzqx5;,p q ihf1r34e moment contact 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 connected in series to an ideal battery 9iyr)cdm y9 wa /xey3+x8, ) pxqmsto4of constant terminal yti3xrsx+8a c,/ o )9m)4d yep9q xmwyvoltage. 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 shou5wi;g/jf bo5 g2awi +;ts ik0lld

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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 tl 1 cekj0zh,asuc i-:;* men/ho 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 p*p d,van05 oxhf8x oh1roperly placing an ammeter in a circuit consisting of one resistor and5xfad, onhxp0h1 *o8v 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 an ammeter's shuntp;4us gxbs0swj9r i9 3a8njt8 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 nobb q7 ,kg5lg3w- )9n2rlbm/enjs;xdwrmally 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 voleui e+--/me y9ub4jizhb+ j tf8are,.tmeter'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. What ha4wbpz+r. rp3 1ln*w lyppens to the total current flowing in the circuit as a result olpw r*n.zb4 r+3p y1lwf 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 w2y kt8* mfu1ufired in series with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a b*u1fmtk8 2yfu attery. 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 ammeter, ands : j8m*.ptqha2bnyjk)hi(d6u 8 tn/r a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the res b.:kijrtmjyu)q/8apnt8(*6n 2h hsdistance 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 12,3o. c osxyqf1)zkm0 u9 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,m/n pr:kv- hs/ 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 12r zoqf:/i vcyw1q0 nif,,6 qa:, 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 into a series combination of oh2p,hw4x6 ed 17la 3fb2ctibiv,1dta 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 into a series combin7mfh en bo ,oi5,xc.(kation 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 flowsgpq07d3rtx y1 into a parallel 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 into a parallel combina6r8 wwe; agfv,uwhl9sf z9 a1)tion 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 4.r2)kyo6 e v+7g.2lmq xger*z t0 $\Omega$, 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 c47 ,yg zpd,k ttc/;jxit b.c;fonnected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what ;4jc.k ; ,/diz7ctxtyb gptf,total current would 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 100g11x.yw4 a.xcii;hz h -W light bulbs you can connect in parallel in a 120-V circuit withog1ich xyxw;4za. 1hi.ut 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 2.0sgu;w oec 6v+96d .fzb $\Omega$ 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 a nhe v(-g8esz+d ,sf9hnd 30 $\Omega$ 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, az hrey::;hglg i/j)4*n qkd p:nd 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 5.0zi eb2 a7x joa7ref(+z+v7w3p 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 an mlc (wd:zdk8)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 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 5.0z3zaa-upyhbv/,2c4p7z +m cbg e4 ck3 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 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 ofb q09 ni6jzn1h 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 mdqps 6+87niewk k):ob 8 uf::ekz*od $R_2$, 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 circuit in Fig. y);-dnzfaw 3n19-3?


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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 the current si k5ub 66c pzpxg6 nbw7tt9 ,7v64qmqin 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 f(+keugr92 i1ku: hr;xe f)wx, determine 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, determinhta g9 b+r:- qt7v)ezte 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 potential of point A relative to point C in Fig. 19-5? ekjtf l-;bwa 9h0qhf4r-w (x4


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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 otbyg i/5w,xv520 zol gf point 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 8j os;j6l1drnt6vp; f of point D relative 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 batte (7e5nrvfr2x fry 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 A to point B in Fig. 19-i khyxbh82.imtfcb5m0 4w :.g5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current bg y 62czk8 9,iajja*hin 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 8m 0 bsejl 2i39lj cn7nx-13)j;ocrqte $\Omega$ 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 th-nnkoq1 xlqs 1,xmcvb9g9/0lpqz; 9 se 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;la 6+ xglcpn4 the 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 thejf 0g+g 9omg)vx yp*7f 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 sv,4 /4pstv+c b8b oa5wvipy,solid wire connecting the upper left and lower left corner4i wb yop8vatv s4,s+5,/cbpvs?

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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. The eq76 bnw2v )x y7,hsthptr0sac,uivalent capacitance of this ,7s2,h t)y6 tcw0rxap7vn sbhcombination is

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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 car+28bb wy6c*p k(bqe onnected in series across a 12.0-V battery. How much ccrk b 2 6pe(w8+*ybqabharge 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 capacitorsau7 x6kexskxrgi ixd,;- 0 p(u-8) jys are connected in series across a 12.0-V battery. What is the potential difference across -xe(; u s -pi0xj)8ixuks,x7 kgdyar6the 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 ac yobu0+dzj 8jw5ht:h 2e1fp 8yross a 3.0-V battery. What is thet jhy j0u2o5bfd:+ey8 wh18 zp voltage 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 rd *m5hytz9ik:i3, zd capacitor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-i,ty m:zdi9k r5*3h zdmF 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 a wlg-vnuan; 5 024-V bavln0-; ga u5nwttery. How much energy is stored 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 parallel, a 1x-mnqi/er ;tnd this pair is then connected iem 1-/tqnr ;xin series 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 8.00 mF are connected in pb; qil6d,84 mb g1lu7nlt5f vaarallel. The combinationb;5vgmqi6l l , f7t84nabuld 1 is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What 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 parb7oqy5a;7od9ifga 3 nio9n,hallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF cif,ny79 9ao hqag io5n;7o3bdapacitor. 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 connm.7yec+vv7duu6lw 0u d2 c ((s(mo mzkected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the vou0(m.se6v7l w ov uczdu(mc2 d7m( ky+ltage 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 c.bu+ji.a -z brharged 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 thror )7ye l+jy-jxy3zvm6ugh 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 tqlu5edq 21 t0series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change i ul051 qttdeq2n 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 ;8d znm:d wnnq9bs.ds1u7d(1 9ywpq od,;onbto 6.0-V. It is then connected in series with a 3mw on1dbqnp(1 dsn,7 d zo8s; 9q9ddn:yb;w.u.0 $M\Omega$ 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 internal resistance of 1* ck e+vrsa.e*00 $\Omega$ 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 with a rrrzf(u hb00q4 0x:-wbj(kydhesistance 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 s bi;gp ;b x( 4 l-oy;lkn*m+fmx4f3gkresistance 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 resdm7 ukl,6 (4mh l-cdgdsppc:9 istance 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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