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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,tq8l4 iifzj9 the terminals of a battery, when no current flows to an external circuit, is refi4f,lq9zjt i8 erred 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 f-utb noy tsnx7 v5;05jgh1x4current flows to an external circuit, is referred to t j4fnx1ogx0u57ty-snbh;5 v 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 cod wxuf .fvj05 .vgvdn 1v;.n)jnnected 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 connecte3w2icu f(:i9cdviru ; d 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. If the currentj sxek)-y40x78 xztsv of 12 A flows from the battery,t40e) yx -jxx8s7vkzs 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 connected nz22ppkv-6( p8n sgwvin series to a 12-V battery. What is the voltage across any one of the resistorkp pv282vsg pn n(z-w6s?

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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 sq zo6dp8ev96a(d9mk in series to a constant voltage source, the power supplied e q9p6d9 a(d8 vko6smzby 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 are connected in parallel to a batx6 jbi4mw4, f8oeoi.jtery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are ci09bp6uyjctw2j*. 4j j,wfhoonnected 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 p p4(4o./(jcvowti2mrgd l g,sarallel to a 12-V battery. What is the voltage of any one of the resistom oops/rd,((g jligw4cvt4 2.rs?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors arb9,w 9-fdwwhn k3t;t tvq-w zne:z.3qe connected in parallel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resis-39 z-w n;fw9bwqdv:, zte ttw.q3khntors?

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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 d 9;usu3-e;ogzqjt,0rq ;jnqlights are connected in parallel. What happens if one lamp burns out? (Assume negligible ru;0rj 3ouq;sn 9q,qtezg; dj-esistance 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 in parallel to a constant volr/b)dv// ukwwdq ja 57+8o egitage source, the power supplied we+g)vi /o8wu7ddb 5q//rja kby 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 resistance R. The mak a +ow8t .w61by4zdp4yanz1fximum 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 pown6ko dzaaypy +t8 1wwf441z.ber 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 ju4qwt r) gsciy*+wb h85()icdmnction 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 ruleo wxrhm8rfg s)pdb6pe+*cs69h, 8z0 a .
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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 exvdnle3*2i1b. ds pcj2 ample of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junctionj yn8 ydzb-(( ucj;j/e rule 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 thc8lok7k ,8ucoe9b ,fh e circuit 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 storage batteries togethes9;iu qg1*+mj fp0s/q dp;kxd r in series ("+" to "-" to "+" to "-"), and place1dqmsp0jikp;uf*s+9; qdg x/ 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 storage batteries together in sere2fdc0hc.)9 xx5m:sp;pi+u apcv 0s kies ("+" to "-" to "-" to "+"), and place them in a circuit, tm.+ ep d cus0i9:f0 x;cv25h)pkxspca he 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 batteries together iny * iwjixcp24.hib9+g parallel, and place them in a circuiy+4jbxg2pi*ih9w . c it, the combination 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 arl/4n;q m aqt9ge 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, the equivalent capacit54e616v nymqznohve(c : 4oj giwh27u ance of the combination increasevq w6 n5c:yjhvo24 7 enu41ogmei(h6z s.

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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 k l-9fvq8e0e/ fsk 1kiconnected in series to a battery. If a total charge of Q flows from the battery, how much charge does each capksi 9l0 f/ek-e18vkfqacitor 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 battery,g wxeefj 3/6 uid9as2(

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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 parav-4x,cvr nfcxch i ,-clg.f/e.4zv:ylb 6su+ llel, the equivalent capacitance of the combination incru. -f.fzcxgvi 4xlr-l+/e6scchy: ,vvc4 b, neases.

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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 batqhobk4(4jt+as +ug+w tery. If a total charge of Q flows from the battery, how mu kowu+g 4as+bqt(j h+4ch 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 th)ndox d-c (8xie 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 capacisi;hypu*d w.8;;kbi(gss8v.k1 g uc ztor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the batt; ibds;iu p1vhs8(ykkg cu ;*s.g.z w8ery, 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 an ideal battemd oqr8y1r9l4z2em6/h l .pxjry of constant4rod y. p 1m 6j2ll8zhqx9e/rm terminal voltage. At the 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 capn)1 8rrrq c0ihacitor are connected in series to an ideal battery of constant terminal voltage. When thin1 r8q r0)ihcrs 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 shoulef adtw* oitzav -656jf64t tj8x9o5rd

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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 ammeter by the addition ofju qy9e3- 9v a7tt6:k;wmz qrf 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 properl /hl9uz0m9cu ac d3u8ty placing an ammeter in a circuit consisting of one resistor and one battery. As uhu c u9a/mlt308cz9d 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 c* hhee,w t1 l6*mb/+;rklyzc an 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(5boy; wb v0 ihry)tl2 dc5;lv voltmeter 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 voltmett/0euv+ jfu +ser'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 acros3 rou9f*y f+txs a resistor. What happetu yo3r+f9fx*ns to the total 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 sn/ cx-hjm90a4 mxm;zderies with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed acro 4ax;cd mhzm 9nm0j-x/ss 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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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, and a voltmetii0gq:mg:7j nx)t0u o er is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the val0:g0mq j7:tg ionx)ui ue 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 4.0wios9g0e; ag 5h e4ldf: 8wkh3+yau2b $\Omega$ 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,wk4s2 j (go,sm 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 14hjfcx v j,6/9nh.y e-ogol r52, 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 obkp5dtm9urs 9bd;5 yflx-ms2sc/6 p 9f 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 into a series combination of a i45a w ky1vjt go;n 59hcr(h6k3.0 $\Omega$ 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 combination of 4 kpnuq6/6aw5n .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+fewzlyp s-9u*r5uj s2 sbj0:c7 8dfo 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 int xd(tqlqu :*2n6); b+ jck8ozx8 piqixo a parallel combination 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 circuit:r .ggh lk:u4z( 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the slr(uhg:gz k. 4ame time what 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 100-W light bulbs you can connect in paral vowp877z.gtxm e23cb1yx7cmc5y/cd lel in a 120-V ccyb8wzx.x c777 2ym pccegvt31 mod/5 ircuit without 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 2.0u-mix s)u/rb *:er t.d $\Omega$ 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 3nj-3/gellp eif 8))ux0 $\Omega$ 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,z3e2 aqbxpr22a)f i m/ 6.0, and 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 and 9.s/)1f1 x/ btb qv ukaekp;*kr-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)-uk3myg4qi .icf0myv;r jo t8 72jwe 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 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 andkvd5a y xd;48f 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 circuit in bvbertf5- 98slq a:4eFig. 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 9u3 6s,b /5n3e h1v,iujjl 1isk(krcsuye (pc$R_2$, 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 resistanc-eiq12vbo tu8*zrf *oe of 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.3 ;hpzsgh5 pwci8u8ca jzf.0fi31p /y 19-4, determine 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 Fitrq*i 3mi: l b7c j4t60atv0thg. 19-4, 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, determinev08q k1qgv a ++ptk+wp 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 (qerk :e.1of(4j jg)ay9 rn(pux2dk0ch2 uwjrelative 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 ohkj;7+9;wxl k-nt;+uxmqrq il vpr* )f 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 of po .7c/wbz2(pu9e0mg+b l su ouuint 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 thexb5a ggy q/hjud: j7:gdr1z6,y.sn+ m battery 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 f*ne;12dxkjn krom point 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 curren zeg-2fvl w;ea)mo 9.yt in 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 in6r+rptep z vnh.i*mf4a/ z5 k) the 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 v- 6q rpoe/, mbv4xcf/a co1u5in the 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 t jsx.mdx e/d;1he 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 ipei*0oqmi x; (n the 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 upper left and lower kak)lg* .g7;2jjusvlc at*i ) left cornersc; )sgjvjatlk.u*l *2a)igk 7?

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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 eqv8j gxbns 4/(puivalent capacitance of this cogn(jv sxp/b48mbination 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 connect ha8g 0gk-y:2lff t-lzed in series across a 12.0-V battery. How much charge is stored in the g h- :zyaf-lkfl082tg5.00-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 serieshq6.t)- xp msj across a 12.0-V battery. What is the potential diff)q6-x sjmt .hperence 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-mFiq)5-,yn+ h ov 0blgtl capacitor are connected in series across a 3.0-V battery. What is the voltage across the 1.g+0t,qboh5ivl y - ln)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 capacitor are connected in series acrosf7ucsls i lk-b1) h;,vs a 3.0-V battery. What is the voltage across tl ulfc17s; ) -vikbh,she 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 capacitoge+dns9-, e m/qjgyou) * ot1grs are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are g m)g *g-ut,/ney +d1qe9oojs 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,lnis 1kae+j /; and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacil +eij;sn1/ak tance 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 parallx4:)kpf m y0gy 4a+nmg hu8yu2el. The combination is then connected inn yfh0ummy+guk:agy2 4)4xp 8 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 axl c.kyl:6d0 wnd 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V wdlcx:k6.y0l 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. xps87 zdv;1h oe)j5ov - pmw1pThe combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the z pm-8 s)p1vxwp;dv5h eoo1 7jvoltage 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 charged t2 b 246 qw6hmvutp)fq/cy 1rxvhrough 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 1y,lzs ,ud:r* 2z ciyyub,5bil 5j;x5g2 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 0.5r 6wm, giid j :-ukqhv7bu:7)y0-mF capacitor. The capacitor is initially uncharged. The h g k7r ij-yb6mq:u)vwi7u, :dRC combination is charged by a 9.0-V 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. It is then connected in se 6qld4je axv8wof i1m-nv8+j;ries with a 3.i x1 +4 jd6a;n 8vowlvj8fme-q0 $M\Omega$ 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 resic8e -utu )csr)stance 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 with a hiv ue*) f+ md:z/i)z g-hj9f n:kvc.bresistance 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 res j:l qm)/h*o6dz(bv dsistance 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 resistance b-.no-syn w t-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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