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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, who5ci+vwig)s8 -dwgoy +lw .a;en no current flows to an externalds5i g.8ai+; +wo- wcgy)lv wo 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 ifku 8w )wg/6co cv.c4battery, when current flows to an external circuit, is referred to asgvuf48wcc/i w.) ko6c 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 a 42i:hgl1 tqqfre connected 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 cot4qhx04pzkzf-1ewd+gr t -+ y nnected 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 batteru8e08yl pqv0xz37v lqy. If the current of 12 A flows from the batterye8q3llxv7q8u p 0zv0 y, 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 in series to a 12-V battery. What isxenv x aql6, (p 2wxko*(zli-, the vez 2wx,vkqlx- *6ln(i( apox,oltage across any one of 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 in series to a constant voltage source, the power sro 45 9(. vi7 wswthpj1hms0qaupplied by 0prs9 4 w.vhojitw q(1hams75the 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 teh0k9. j2 zzzt:1 nmlwz ++jqzuze(5 mo 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 parallel, we can be cert,h2+r0+tu * loylyb tgain 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 para2v+xwtik.:- ) ufjjngllel to a 12-V battery. What is the voltage of any one of the resistors i kx:unfjt)j+ .2g-wv?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resi-is 8xhx hlhsw/rx,8-stors are connected in parallel to a battery. If the current of 12 A flows from the battery, how much current flows throuxs8,h srl8x-ihw xh-/gh 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 connect 9v8lnj u :j+sn;:+vgk*bwwzoed in parallel. What happens if one lampnzj9l+bk8; u+ :*w g:swjvov n burns 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 in parallel to a constant voltage source, ds :3hu(jh y8waca,) w1+gt5j2woe nqthe power supplied buwh5nq)( stwajj ghy +a:3d 21w8e,coy 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 re 3jtd*t + f7yd)6dkl:hrq rb iw8yzi6-)c7onesistors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and anfd86tithri6y3 d7) q-jzc)7bkr+* dw ey:ol 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 junctiol0(9; uch fqf j)bl5blm7ln; sn 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 rule8ca)kfd9 nvwj;c.zbpp/e4z + .
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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 examp8ixv 19pvb9ho-ja 5skle 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 ex, :,ene( qua1d0r nsjmif (am-ample 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;i *rdf9ji*vi0f(cqq for the 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 together in seriifqxu5 48jsg- es ("+" to "-" to "+" to "-"), and place them in a 845 jugqf-xsi 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 battiyp) w;d90rjr ;: cbwnl6hy q*eries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination will provide: yw rjp;0ql)ryc*69; nhdbiw

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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 in parallel, nglbnj w(r40i u 7jn9-rvc8 z;and place tbzc;8 9(v0nn 4njjw lurrg-i 7hem in a circuit, 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 ba4lc f) wv90qare 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 eq*a* tp y d7nwhw9oqh*wc5ci8w h9b)u;uivalent capacitance of the combination iwbch7oaw9 5h;* ut9n * w)q*dpwchyi8ncreases.

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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 connectem)r1 qe.1d plps9aix;12uh +ujwxcr ,d in series to a battery. If a total charge of Q flows from the bah1l+ru1pdi xmjc;arw).q1u9 xp 2s e,ttery, 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 capaci/ r(am2gz,efar/b3w wri7h6 gtors 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 parallel, the equivalent capacitan5 1px;9ufx8ug1swn jjce of the co njuj 9; wsugp511x8xfmbination increases.

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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 azh4va.cy lv:o 4v2mu)yzz s- 2 o;x4aaov 5z*y battery. If a total charge of Q flows from the battery, how much c5zyahzs2a ;xo4y:z .2-mv v) vyluovzo 4 *4caharge 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 quantim)my;4nh ;iskty 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 conkk- hg7;k,tyhzb o g/7 h(f2wtnected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the capacitor is;wh(k-kzf2b ,k7 t ghgyth7/o

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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 capaces-u(y)) nqm yitor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with theyms uy-n( e)q) 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 ofc*0n * 5c50irqogb gvf constant terminal voltage. When this system reaches its steady-state, the volta*0 *g f55gcqornc0vib ge 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 shouldg,y uwfq59* gy

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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 of a tsruv8 -kd:(3feoh,f7+xbgo

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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 ob8t(k*1z ig systained by properly placing an ammeter in a circuit consisting of one resistor and one battezsk1ig 8t(*ysry. 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 shunt res9 d1 gt0ai79ap:xgu fn//nd 6ptnyb/mistance

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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 voltmssj-8v9x7*p9oj(u lyb hbndk.- k -mqeter 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 resi5.. x0 53rz4alxhlwaky 6venkstance

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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 ve vn ofi)-,i )+,op :nut2wulboltmeter across a resistor. What happens to the tpi ) +oo)uibuwenlt,f: v,2n- otal 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 with an ammeteexvo7k8dhb1n46yf 9mh.p /hvz f h8+rr, and a voltmeter is placed in parallel across both the resi6 fp4d1hhrhf /m+8 v9nevhzb8o x.yk7stor and the ammeter. This network is then placed across 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 voltmetev eys78o:jl p(r is placed in paralpe78jo:ls (yv lel across the resistor 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 12ar81t rusy m/i813,zju 5 ossy, 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, 12mf l( lin1e,9w, 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, andvbo1znjn- k 6, 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 combinatizu(4ef4 vuqowvr b* 19on 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 into a series combination of aqy;.m 9pei2ty 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 paralu6a u6wgt+8cinzc;hts1s c8ha s2l8.lel 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;t )zebm(fz:sc h:v;v 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 fw.vm94 xlrhc 2sg+ r6a 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 cir9qm p/ j.0uf16ok /nuli vsnn7cuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time / 6qiu7nj.mp 0vf9skn uo/1 lnwhat 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 li7pw2d6wo4g ft3y /f4nk ftyi2ght bulbs you can connect in parallel in a 120-V circuit without trippt i/ w3po4tfw 2y6gfdnf7k4y2ing 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 2.0d88 :h 9tcqkkv r+s1kg $\Omega$ 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 30 7wg tw eupd4yv4nj/ve odky38(o//0d$\Omega$ 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.tatplh.6qc( pyv :de u*p3; 2t0, 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 9.0 d+ x5 lsdp91xj:yvwq8$\Omega$ 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 anwmfr 6(*6.uclky8d zcd 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 and 9.0dlxe h4l..i5 x* zv jptx)c:(b4ni k9s $\Omega$ 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 o p.gxxifnnp39181i:r aegx+i f 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 (j6 xvtphj3)u $R_2$, 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 resistancydajiaw kflaj )fa4z7zh:(5g((h+ / ce 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. 19-4, determine the currentbxl0xcm -x 6xfybp(uh4; ,w (f 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. si- tuyx0ay5;ce9g8j19-4, 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, determine the currimc1b*h)e:y gent 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 dkvf-r qen*2 xh8.zj4 :7feylFig. 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 relative to point C in Fec 5:pz9x ,co;ayoi: lig. 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 to point C in Fig. 19-i j/e oi3kyo225?


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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 battery pk;k5/ tbcgg p1lc8gti+o1k 3 z rds(7in 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 t9-g4kbyh 2 nsxo 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 icg1 *ocpxrk4; n 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 . gfuot:i:s m.6who;riahq87 in 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 in the 9dghs:zwz5 1q 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 izpovy j-6 3sm/n 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 t9v7)kemr m0 wqhe 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 : a5 *8vkz/rfc yuaxj+the upper left and lower left cornex5kaa yurcjz8*v/f +:rs?

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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 iyoj3 ta0v 5h:zdm (9 uj ;o)yconj)+gvn series. The equivalent capacitance of thoo(g;yu 9+aj5ydcvno:0zt h)) jvmj 3is combination 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 connected in series across a 12.0-jne6: 0taifg8V battery. How much charge is stored in the 5.00-mF capacitora60f njet:i 8g?

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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 capaxuuqg; t+8h.ecitors are connected in series across a 12.0-V battery. What is the potential difference across the 10x g.8e;+quuth .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 ar;9;dgp1 : wy m:x ngvgju*p1sre connected in series across a 3.0-V battery. What is the voltagp gg;1:9 w 1xpgs:dju;my*r vne 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 capacitor are connected in series across a 3.fe ae0di0j3- ze 3(s vlip.4l l-y*i8c;ijinr 0-V battery. What is the voltage across theiiy4 ei ;-p *eljl.dlf0v jc3ii8ae-( 3r0zsn 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 a1:alnsc+ e,gaht3 k3vre connected in parallel across a 24-V battery. How much energy is stored in this combination when nlk 31:v3,ha+ga ctse 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 an yw6o442i fvn41igzye d 20 mF are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equ ygwnzy446 o4ve1i f2iivalent 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 i. hcc/m8e.bb pn parallel. The combination is then connected in series with a 12.0-V battery cbh 8mpc/e.b. 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 vnoo lh4 b47x0re3gd1 parallel. The combination is then connected in series with a 12.0-V batte1 h4vdn7xle0bro3g4 ory 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 cov(taoisr/k2s.ecpo 528knc y) m(t q2mbination is then connected in serie t2r)ckos. yqovet c(nm(i2s/ a8k5 2ps with a 12.0-V battery and a 14.0-mF capacitor. 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 isyxm(3i:b aon5 charged 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 ai85gq2g qo j-5qv0 yg)de4rn hnd 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 istf5ysi9*p 7mp connected in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What i5pim7fsp9y t*s 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 series*l4tn d)6bc vz with a 34 ) tcdzlb*6vn.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 inte7* fbgw; r62ryduo6t a6r ezhv18(m bc/vik6v rnal 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 a16y 6gawsp*dv coil with 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 resistance of 1fw4p7v psrv87 00 $\Omega$ 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 resistan7wl ww j5y/v0yce 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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