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习题练习：Physics Unit19: DC Circuits
本习题练习试卷来源于无忧得胜-网上国际课程 (https://5edu.win)， 为试卷打印版，您也可以在网站平台(https://5edu.win/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 77，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://5edu.win/test77.html  教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。
 作者: admin  发布日期: 2022-08-17 15:49    总分: 102分  得分: _____________

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

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference bet:6 (ff zt hxx4nme*nt8) 4ixjkween the terminals of a battery, when no current flows to an externaljx th*m) z:8(4in4xke n ftxf6 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 current flowstl7 (3cisjif 6z,5 wio to an external circul o5c,itzwf37ii( s6j it, is referred to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in series to a batte:f wf 9b6cqkwttv+q,5 ry

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in series,,e c*j:agnw mi)g 9r4o

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors bn:4yz;ke7d 3t1j n9f,uivgy(4udfq are connected in series to a battery. If the current of 12 A flows from the battery, how much current flows through any one z,jnn;y3 i:d4tuueqf b vf(y1gk79d 4of 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 isy7s;byqe81 lmxc ) z*vok8v8m the voltage acros)o*8mq xycvlv b s 718;ek8yzms 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 voltayhsxu /3ukpl 3746cmblvu0 :dge source, the power supplied by th0x6 u 74u/ph lc3mys3k bvdul:e 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 connech i5w4r85n: ec+3t3 osh;5kigc hxeryted in parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parall; *i855:l5*ohsi fy rn:ixj:ojcwkfjel, 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 e )ij w9l/ afx-g8fl3zvoa:t0a 12-V battery. What is the voltage of any )aiz/gf l9eolx- t:0f wvj3 8aone 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 resisqbolk05ezi 9, tors are connected in parallel to a battery. If the current of 12 A flows from the battery, how much current flows through anyel q50bko,9zi 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 parah;aks0l 87av 4zus;v gllel. What happens if one lamp burns out? (Assume negligible resistance in the wires lv84h;;0zak7 u savslg eading 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 ceuy911hcn p;)q*5z z7 vxof2n z:07wdprklud onstant voltage source, the power supplied by the sou0hyv d7npncl 7z; :15rp*zz1kd92 e)wfxuoqurce

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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 r8i ;aoiel tz 71nyg;j)7w2wl 6v4-9urhij orh esistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third i 7i9zv;a-j)uhtloej7iw2l;iy n41r6 8rog whs 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 junc0wn pkv1ok)o;- veyl.tion rule.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loop rul3p04b1* aw7wdqzgb9 irgod.ue.
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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 lof 0;wnj2)fm is 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 rule is an exampl2hke 5 .m 4wzd09cgu;oaqjzf.e 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 val3ti061gz09mhb pq x;vea9mn aid 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 series ("+" to "-"):(h g xrjzw9l to "+" to "-"), a9xjr() :zwhg lnd 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 storage batteries together in series ("+" a5a1-urwnn 3m to "-" to "-" to "+"), and place them in a circuit, the cam n5- a1wnru3ombination 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 bat r c7rjsdru;vj*9: jw-teries together in parallel, and place them in a circuit, the combination will prrvs-jr:9 7cd; *j rjuwovide

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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 baji3 5. nb+ezinttery,

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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 connecte(j m0yr 7ad89. tdjckad in series, the equivalent capacitance of the combination increaser 7j0amdda9j 8tck( .ys.

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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 seri9yjsbmb8v jlho,.c0yyg+( b v1jx k m: r(e5(ves to a battery. If a total charge (+5(rvbg1hvy8k (j 9e:m bmjs,ox .v0lyjbcyof Q flows from the battery, 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 are connected in para 8t.lowo-ifr+ue5o/x 3a9ks nllel 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 equi7 : 8vrarfgor1knb*1kvalent capacitance of the combination increo1argbr8n*17 kf rvk:ases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors ar edkld+ +q z.vdgh33m4e connected in parallel to a battery. If a total chv3.+ dmlde3d h+k 4gzqarge of Q flows from the battery, 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 thmw 3p3 qpm*p*y fg+u)ke quantity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connecod)ilc e3+ ;ama,exp -ted in series to an ideal battery of constant terminal voltage. a -de+l;xo,cemapi)3 At the 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 an8 9ng.k7 owtore connected in series to an ideal battery of constant terminal voltage. At th7n8 nt.ow 9okge 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 id kz/ n j5pdf/qzm3-wu, v-k:gceal battery of constant t:q gw3 - dkzumnpk vczf/5-/j,erminal voltage. When this system reaches its steady-state, the voltage across the resistor is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shooy +2y.tm(i9 a-ap6k 5ggou kfuld

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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 th +d le2)na fum5it*ym/e 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 ammete knovb a:)vd doyfa*2 64fk5w3r in a circuit consisting of one resis*4kvbkdof56):ov n d3f2awyator 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 an ammeter's shunt resistan rtw 8bvt75w8mpwvz+,ce

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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 normally zu -fm;ag/a(r a3aad) would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resista,jw vt75jm9sznce of a voltmeter'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 obtc:stbn3 l- 3ym*g(z /kt.qkvvained by placing a voltmeter across a resistor. What happens to tscbk3-/nvt(t* y.zkmvq 3: glhe 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 series with an ammecy36 x buhg. mow*rssz.4o+n1ter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then pla.n6rcub4o o ms3ghzwy.1x+s *ced 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 f bp*;bxtdf/p40hlm 6voltmeter is placed in parallel across the reb;f t*hbp4m fd06x/plsistor 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 12, 3.0, 5.0, an :cq y-r g0m--/yhgqhcd 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and 6.0 xod1k2+u-jpmbw3 p 6w$\Omega$ 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,r tlaon:,2y 4nn-s-lrq7* k8frs xxk( 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 , uac.xhym )j0into 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 flows into a series csdao4- kxc2x9 5if 0n7s2ds+-seddx eombination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel covmx:oud 9 +ot8dazpxwv 67m 64mbination 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 coelj * 73 3;n1oko.n*kxyyauo tmbination 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 er5bga* )cfm3of 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 appliancesdh,mlr o n(r(nkf 5.;x are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If r nnk,(h(xlro5.;dm fall were operated at the same 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 b td jnri+8e1.;3bak wparallel in a 120-V circuit without tripping a 20-A circuit breaker d;betkaw jn b1.ri8+3?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0tr20noz 64k/36x gnh x)adlbb $\Omega$ 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 qx4 7oo eprube2:e-wiemw , q1l*d3t3and 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, and 10.0 3)-vnq(c(x6cuy)hjg qn he2j $\Omega$ 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 andj6,r cero5-c ;vvk. se 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 y*t+r3 b 2v- vh.vfvj3faccm /vzj5)u$\Omega$ 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 anr.k/ o9 7w04kcuat duhd 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 circ 7vrcit*ns6 yjv8, vd;uit 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 throughv(h)gv+dqtljbn5 ; q( $R_2$, 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 F/*h *f ann6med2st- yqig. 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, determin6ub+w :z c 918nhnck4yrydu)re 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-p;jhrftj (75,pp gdac/ jjmw ,m)5,lz4, 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 current in the 47:g8. )xavu p6ml *1pamadklj $\Omega$ 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-l 0pinc4u*y)dxq . tj 9htuhr1vu:r* aru+ *k C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to point C in Fig. 19-5* vcd0sp rviwtm xz0vb43h5 m-: )zy5rogfg34 ?


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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. 19-50g4:icb8guh4 cjj( 0iwu mmf 1?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows frd2,yki 6;k5rz 98yhxodfadp2om the 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 from point A to point B in Fig. 19-5?qurh n2-4xvko 2lg//s


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 7 4,qpx6mqmd bw5o g-,fs.+zj q $\Omega$ 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 currentyb 7pdq9k9m:d 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 currentp0-icsy7q u (xije 5 zjyd9,d.drr) )r in 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 txf .gqk2u++ht06 oj vuhe 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 18ni 16i;fe+r7+du eivs p6y3re $\Omega$ 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 thl2 ; jmkiuc ,6cjp3-hoe solid wire connecting the upper left and lower left corner j lu3;km-cijop2c6 ,hs?

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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 equivalent capacitanc6jxu(d4huie cx.,dm +e of this combic6 i +m 4(e,duuxdx.jhnation 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 in5p h0 )lpy:ohceaj6+f series across a 12.0-V battery. How much charge is stored in the 5.00-mF capacitorfp5co)ph e:l ja 6+yh0?

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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 connectedsoa4 :td o5(a.g 3yvyp in series across a 12.0-V battery. What is t543yyso o apv :a(g.dthe potential difference across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series across a 3.0-V . nm2jkfrq.q7 battery. What is q.7 m 2fnkr.qjthe 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 y ;zvpz, ho n;v.8y;ijcapacitor are connected in series across a 3.0-V battery. What is the voltagen;v;h z,vjp.iy o; zy8 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 parallenal(ak o14nntr(; fm8 l across a 24-V battery. How much energy is stored in this comba 8f;mta( r(4n1nk lnoination 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, and this pair is tlf5u.ha bj .xh +wp*+chen connected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangemenh5jpbfl+*a.hwcu. + x t?

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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 cil 9qar;r+9hqhc ,r3iaa,+ k mF are connected in parallel. The combination is then co+hi3 l9 ac ar+h ,9qcir;,qraknnected 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 connected5bszohc2- ns1+* p.otzkji8 l in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the chargksiz -1b +os*tj82onchpl5.ze 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 6m/; fuzv58jc(cbtzj+ 1b iog parallel. The combination is then connected in series with a 12.0-V battery and a 14.0- ;5j b(/mzz+1i f8tbjcoucg 6vmF 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 is charged throu1 o/j,td*m5psv ca)*lyo 95u u. wuteygh 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 thzsb*u 9; k4mz0 nhzewwk2 t5e1/ 7tlmgen 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 wr-8btu3m 6a(u qf9 vzwith a 0.50-mF capacitor. The capacitor is initially uncharged. The RC c t68qw( a 3zvf9bumur-ombination 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 if0i zx2*l)w uks charged to 6.0-V. It is then connected in series with a 3.0u0*2)ix klzw f $M\Omega$ 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 ofu)c(nxqw q;i p1(nsu+ 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 a1u6 mt wv3/c0sga* bpq 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 re 3y8 zi jdf /m7y;g2:elgf:oshsistance 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 i2d25pvm +fucs6r+ te 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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