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习题练习：Physics Unit19: DC Circuits
本习题练习来源于51fly国际课程 (https://51fly.win)，是在线习题练习的打印版，您也可以访问本平台网站(https://51fly.win/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 77 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；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。本试卷的直接作答链接 https://51fly.win/test77.html
 作者: physics  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, when no currjt aho(x 2p9(xent flows to an external2h(p xx9t (oja 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 flows t ks/+zm.ramikc7 b*t8up) .oto an external circuit, mrp7 t /u8bak..o+mkc s*i)t zis 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 )kxfm126c w dy/m ;eykbattery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are coj*q 8ail )b,nyisge+9nnected 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 curre- b nm.+7qywq vyeg3:fgny38sgp:kh8nt of 12 A flows from the battery, how much current flows through any one of t :ngqy-ypkq: +e3g 8 8v3ny7bmw gs.fhhe 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 br6ly4f:7:yc;tde w 7rl9c0juc *qs l series to a 12-V battery. What is the voltage across any one of the*drtl uw9cb6;yl rf:sy7jl4c 0ceq :7 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 powe 76xrjs :dkww6r supkj7 x6 wdrs6:wplied by the source

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected inwtcq u j2-wb:i ;11qjx 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 parallel, we cant;n- hph5o *bi 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 b.c9 bhfl3 )jy/q9z;cll zrkh;attery. What is the voltage of any one of the rec3 jhflqz)bck; 9/z ry ;l.h9lsistors?

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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 connected pee vls.3yz9) in parallel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resis9ys ze)l.p3vetors?

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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 6qrj) tz2 ls0xzy5q5ftree lights are connected in parallel. What q0rx z2q6jzyls5 ) 5fthappens if one lamp 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 ar*xptg vmkf4+(nqm1qlb7l)g6 qd/2pye added in parallel to a constant voltage source, the power supplied by tqy) blq7x1f g l(nv/6t mpdgm2q*k+p4he 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 u*n, e3l6wue wresistance R. The maximum power each can dissipate is P. Two ,36l enwueuw*of the resistors are connected in series, 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 rulr7qah /2v1 jx-g1thsve.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loo mj*.p0c q3jm:a*ew tip rule.
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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 ))dppkuo ,en6is 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 rul(e7q;hb + fheae is an example of

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the equations here is valid for the cah x3.s/wo9vc bvd20j ircuit 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 ("d .idkz5eyhja, u53 q1+" to "-" to "+y5.5uq3, 1d jhaikzd e" to "-"), and 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 idr3 t;(nl-fj2weq yr/ tentical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination wilrt 2n/yfw;t-e(jl3r ql 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 ide i52d0 crn7cz)6js wccntical storage batteries together in parallel, and place them in a circuit, the combination will provi i 56w njc)ccs0z27rcdde

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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 capacitorc(wzave4o(qa8x /n9us are 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 connecc- 6tuknfqj30-x) duieh1x1 aqq9br2i(l 4kgted in series, the equivalent capacitance of the combinat3t)k juxq-g elk(2qiadi 0 h6fqr41- n91xcbuion 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 r p0c 0i2 ya:og(-haaia battery. If a total charge of Q flows from the battery, how much charge does hp(ocir-a2a0a y:0i geach 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 parallelda(agd rrmfrv.) f0:4*vy6cm 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, thmq3(bet1*)smph kdc -.h 1ajc e equivalent capacitance of the combination incrt3ec bp.1)hda m -( 1*hkjscqmeases.

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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 battery. If a totl9lvz6 mz/x6bal charge of Q flows from the battery, how much charge does eac/vbmz 96lzl6xh 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 quant p3fpgz1snpim: e j-92 fiy3b-zt0sz7ity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal battery of1mvvh-on)oj ,: 9 w6wpsup, h x;scht8 constant term-vxhhj, tw,v9o6p8)ph:so m swnuc ;1inal voltage. 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 are connected in series to ano0l87bfracp9mm;e 5kh : b n2p ideal battery of constant terminal voltage. At the moment contact is made ohm0p e an;pcb582:r bl7fmk9 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 toj0pwdfc8/c qhqc4 3 :u an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across thj8fc3dq: chu04cpwq/e 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 shouldibzzabf8hm8 n2;6q/ pzeh2 r(

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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 tiv14q/ dud sz1+butx4 he 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 ammet0 lhf9n+vy s8ser in a circuit consisting of one re hf+9ssy0v8nlsistor 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 wz2rt tz-jm2tjxc gjo 3t97,2*hf 0jkammeter'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 voltmeter from a galvanometer, one normally wo6 50pit4 7ew(gzgjh :s5ggalould

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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 volt jv9qtn()w 75lk qtav1meter'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 voltw utcw i(u(zm;;v0kj-meter across a resistor. What happens to the total current flowing in the circwwc-u(;kjiv 0t;m (zu uit 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 ammeter, and a volt( th s:ea-ftjc:ij6il .wnhy/*g2wl/ meter is placed in parallel across both the resistor and the ammeter. This network is tj( 2t 6.wl/ -yhw:ghl asn:eji*ticf/hen 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 ammek 0rsim8 ded*-ter, and 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 resistancd0*skmider- 8e 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,jvov,b+ v7m1yp2ji r, 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, 12, k/za;4o.c dtlrc k.*t 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, and 6t) zszjd(8 ,p6- aea:g,uqmf*hu-y cd.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 combina*:ld 8u4lgb -jmvum0dtion 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;(y jpqypg vrydv/(-k/ 3 q-vh a series combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combin mub4v+06banhation 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 ifkvr+jl)t-(+bwb86 k eg bm+ a parallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallex/6gx2d9/qcwgg i4ia 3l e gy(l 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 connecfueq0wl/winu1 + - j1sted to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. Iw- uuw i1+/1nfeqs0j lf all 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 p qcdy.6 fy*1 y5fq+g2b.bshng arallel in a 120-V circuit without tripping a 20-A circuit breakgb gcnf5bs*.qy y2 dy+f.61q her?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0 b ijhcbit5 -bnz +64n1$\Omega$ 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 and3xtk3fmhbpv)p6g jdu:c 12 9k 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 11g/ryznp319codvk /+j y0ur i0.0 $\Omega$ 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 abr7hh- v cx08knd 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 m j)ma0;u zuz5r+g0 sy8img* w9.0 $\Omega$ 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 yd/ybx7s, u,p9.0 $\Omega$ 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 3;+i474-k kdmtsuz-a atp nnv 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 :bu)rr q*j g35uopx*sv1g.hm $R_2$, 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 ren3 .l87/o(z8as;huio prtjc,3 kxr vb fo6jd.sistance 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. 193 ch(dc1epd , ,g0tqnh(sfp ,8 mvkp:i-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 Fh, n6pqelax0k9r(e47ogs m6dig. 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, determine the current in the 4 1ow5sc3hl ;3t ucvo8 q$\Omega$ 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 )i, )z 58xfg;shu*r-qagi w-h ldej/t A relative 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 of point B relative to poi( i*x hte s/9d 4sd,5abyhu 7e1;rdtdrnt C in Fig. 19-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point D relative to po9ze ve38l b(gdx y/bp)ibdl3;int 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 battery in Fig. u9jv*spdeif2qaj)6vf q g7 k,0.4gsz19-5?


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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 hv o/*(+ru/5 zxbtr;h0gk;cvl3b x a xfrom 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 current in the 7 :/9f zncsxqm qg,a;x1$\Omega$ 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 currene0ip- u5i9 w pz5hytim9)-hlm t 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 4t orn /tc(+p :6mmrll+ $\Omega$ 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 6i 9kbkhjjeg7u5h4r k0tt+ jz,zv8 ,qthe 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 g9f.c4,rti :rcua9oz:r -go q18 $\Omega$ 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 upp*lrc3g rnezjka9 0dbu3 lgz+w2ny)8 )er left and lower left corner2gz0r83gy + cld)*n )9 awzlbkne3jurs?

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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 capacitanci,n3nfeg a r-qnr.. -ke of this combination..n in3gker -fa-nr q, 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 capacitorsnzcn 3h .)q7gj are connected in series across a 12.0-V battery. How much charge is stored in the 5.0h7.)ngcn jqz3 0-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in seriescsy tuhk/ora 5*4o;2 /lqgp c5 across a 12.0-V battery. What is the potential difference across the 10.0-mF/u 5ygot4q2p k or;* /a5lhccs 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 bat )tpary owg kv5 )*,.pal)ks3etery. What is the voltage across the 1.0-mF capacitoreps,v)5.al*3)yt r a)kwogk p?

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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 capalhzga3:rssprn(t2 y5 a -/p:fcitor are connected in series across a 3.0-V battery. What is (atsgr3:5f- lr a/2:ph nyspzthe voltage 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 ps wpfjgtyga ey 916s( ;g t1l+;+rl6xlarallel across a 24-V battery. How much energy is stored in this combination when the capacitors wl+ fl; 61p+slt 619gtegjaygys;r(x 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 anwktmk;:05as3 70/ j ze rjfqxzd 20 mF are connected in parallel, and this pair is then connected / ;j5tzze0wjs:f xk a0k7q 3mrin 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. mke.9/t5 +2nwb nkwiwa;w z;r00 mF are connected in parallel. The combination is then connwbi ma5 nwz2nkw9 +r.k w;e/;tected 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 z r (wvdkl8078b brdy.connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mFd8rv8(0 ky bwzl .bdr7 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 paraeo19cm)s:/cpyx zy3 lllel. The combination is then connected in series with a 12.0-V battery e 9z )cc:xy1/spl3 omyand 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 is char hrn,jt5jg zurb9s 8;nj:l. l5ged 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 7 9xl,vjw)olp6+ qhto12 V and then discharged through a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a 0.50-mF capacitor. The kue yp4obn-5p4b/ n j,capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in vb n-younp /e4b5jp 4,koltage 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 chargi ve f+tfi+af8qqgl -oze:,)9ed to 6.0-V. It is then connected in series with a 3.f:t)qgoff+8 qi e e9-lvi ,za+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 in-hq 6n f8ggj+kjuf +7sternal resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a coil wit sp/6yoj* ,qqws).invh 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 intpwf);la aw-rw4 7)x/yx:n1ddw aetc8ernal 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 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 rvm2y96g;x;*j dcqw(bk bk )l oo;dt 1xesistance 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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