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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, whp1hjggima1,wpm0z tp )z:7n3en no current flows to an external circuit, isg,0i zm7aj1w13p gz t:nmp)p h 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 ofy4s j7cw- l 9g-xbt0yp a battery, when current flows to an external ci-4tw9gjls 0- b7yyx cprcuit, 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 ca vdx io,1e3/hcrrmj ,e c;,3honnected 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 connected in s k-l:l8;rkk rperies,

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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 se: gwigq(02s(hav/w hqries to a battery. If the current of 12 A flows from the battery, how much current flows thg qa swvi(g02/qhh( w:rough 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 is,j 9:wn7hw.i(:hco cehz7u db th n:e: 9j,. cw hzhh7dcb(ui7owe voltage 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 addea) 7z/0gpw ycxd in series to a constant voltage source, the power supplie) az7ywc gx0p/d 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 in parallel to 7jasuxv*w7j5sbt +t* 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 connecteexzd;3wgr *r 4d 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 resistorshnkk h yymk2 ; 8*mo*)h1futv,q oe,4o are connected in parallel to a 12-V battery. What is the voltage of any one of thumoqho8ok 2mk1)* fkh,e,4 vyh* ;tnye resistors?

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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 in parallel to a battery. If thedms;txf1snl y02 2 5eu4fv: mp9f ewq9 current of 12 A flows from the battery, ho:psn f;d5f4m9mseet0 ul19f2vw2 yx qw much current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string ofc xssl)syoygd* q84/lu4r 4 /w Christmas tree lights are connected in parallel. What happensso 84uw/4) /yl s4xysd* lrgcq 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 are added in parallel to a constant voltage source, niii.:z y8n,t the power su8ii,i tzny:.npplied by 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 resis35yl*g4gdcj dtors, each of resistance R. The maximum 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 power this network*y5g4dg cd3 jl 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 junqp :x2l up1p wjd j2x.gqpv59+ction 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 loophohh.1is g/,ptwpejee + .7d; 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 is aifzwmz,am)*;f klq d2b:v8 p 0n 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 ir2m; z2 ogb8)h mgc-las 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 vr+n 0o/q,z jdialid 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 identiq6)ho x8ws*f d5g j0qdcal storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combinatihf gdq8dq s6*)j5o 0wxon 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 9(u4fqklqm ow 8h/r(r:m u)7ijj 7j dvseries ("+" to "-" to "-" to "+"), and place them in a circuit, the combination wiu 8lih(j:(9oq7)vf kqm rjj 7dm4ruw /ll 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 in pa*muny(i *tv ;jrallel, and place them in a circuit, the combinationin *j(tuyv;* m will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connectc)l2;dgeibgoe*gk76wfv tt) o( u*)y ed 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 capacitanc zu9c.fw.a 7r-i9nczl ::nocne of the combination increz-7ni naconc:w9:. flc .ruz 9ases.

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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 m/zfm35 14lm)gg p j.(uya xcvin series to a battery. If a total charge of Q flows from the battery, how much charge does 5uv1j m(gam)flx/mg c4y. 3pzeach 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 dmhm71);a6 sm rj7kthparallel 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 paralleg :h 0mq0xrb5el, the equivalent capacitance of the combinatiex0:qhb m 0rg5on 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 a battfmd*2uspnshi7n; n/7 ery. If a total charge nd ;i7fsh7 pu2s*/ nnmof 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 the quantity zf)l:k 1k 6wgeRC?

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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 ipkfj: 9 lai6u. eqk+fxn;0: ppn series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acrosi :p 6;p.f9+kjnuqx0p fekl:as 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 idealpc l/2w(r. icwm)x,,85vzakb8lbdtt battery of constant terminal voltage. At the moment contact is made with the battery, the t, m88x/zbpir).b 5kwv,dlawc2( lct 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 con i36jf85 nqvopd-hb j,nected in series to an ideal battery of constant terminal voltage. When this sy 8v6dqh, -bjfpn 35oijstem 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 shou68cr +1*es9 y mmjhukfld

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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 kx7 zq3lfckq+v zjcr74)0tu. converted to an ammeter by the addition of a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obtained by properly placing an ammeter in a circu)l8903w2vi fxo3k l-dctppx kit consisting of one resw 93p-2p38 x) fdkxto0k lcvilistor 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 rpz34dd/ zt 2fbesistance

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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 os82gx7o 8kwqhoj**c..uk nz) (.zo3 flp bkcwould

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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 muv4uf *h. ;odresistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a voltmeter across a ex1 jv ;xcj*qchpk/* .resistor. What happens to the total current flowing in the circuit as a result of this action.je1jxx*p * hvq/;kc c?

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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 voltmetegm qc -ar3e/goa.6+s8k ju c,ur is place6o.,ue3gkr+ js8g /ucm qac- ad in parallel across both the resistor 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 am2jb2np:q c8w ymeter, 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 resistance by dividing the voltmeter reading by the ammeter reading, the value obta2yj 8:2 qnwbcpined

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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 12,7m(npf;pd e (in,jz+ a 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, and 6.1ycwrd;t iw8 dl9s5q9l.zl1w0 $\Omega$ 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 6 oar3rr(ld/6n.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 * z p-)edddy2ap7pw :ma 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 combination of a5qp(7aeno ler )m4 z*b 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 intoz sif36/h v -l-ifts2lm*e,hk a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination of a 4.j;ri gi/br f 8,2lrp4g0 $\Omega$, 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 combina4/sbceq q v, i h6ojfe7ve+yj8*k3 h/htion 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: 1200-.m8l0-oe q1d zrux+o nW toaster, 650-W coffee pot, and 600-W microwav0 o.elrxnz d-u+qmo1 8e. If 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 d50edql:h 8b7 v,vqnq you can connect in parallel in a 120-V circuit without trippi5 0,blnhq8v 7d:v edqqng 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 2.0 m+dw ui3 n)w-nb;b6na$\Omega$ 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 30nmx;m6a-mjj zo o8 w;2 $\Omega$ 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, s-j (2kcru n(:apw,moand 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.c6em mt;yxjn ;pr:; az1 :mi/f0 $\Omega$ 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 anb6e 0bb(sdin 3j,fm. pd 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 9e0gvx/ r4*cfd .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 Fig. 19-2p)oj.kf)5euv y-c 0q++7 ha h)l tpwir?


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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 throu;jp6ln v8w n2k6*h njhgh $R_2$, 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 ci2 mt;r.)g75j8ogoha r*j2txsq, tgkircuit 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, dete wl f55k;tgs f.qw:c /q5woy7prmine 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. 19-4, g60 j8d5p( kort wr90auf a*ebdetermine 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, detejwt6:p0 . rjjzrmine the current in the 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point A relative to poqs6g * 0wip6i8xby(v9 ;i/zi ;jagvwwint 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. /r- 8hls),eyvq una r(af.cxbw9 7s1r6h6yxr19-5?


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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 posrs *(l jt,l)uf)t jc1int 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/ ( plxaj 8ym (hurz.wswc9fu;9o)1bd 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 fr7*82ar6zstt u:k tufh r:n5hc om 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 q2sh3lql :fxn ox 0sc.qr:1b57 $\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in they2j8 jr7k6hix mvae+,kel 54m 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 theihf/he3q 4jqc /j:h+a+qd 6au2 n8kc1 fvjpn 8 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 the 1 t/ *x80ule jemqoj.tpo .jb+w 4s3uw,2 $\Omega$ 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 if*8ox osr1/-v df wgb.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 y24rpvkn5m ;iwire connecting the upper left and lower left corners;pm52i 4rv kyn?

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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 isg i7oz5(dh2 6 uhmll-n series. The equivalent capacitance of this combination is5 iz( l h2d6og7m-lhsu

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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 serij u1ll9a5/tjg a72ujbhof4d6es across a 12.0-V battery. How much charge is stored in the 5.00-mF capacitor6j9ul ajub57 h/2 jl4 aogdt1f?

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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 conn9i-p4 4a.4e wigwxs8oc v(fgiected in series across a 12.0-V battery. What is the potential difference across t vpg(8.i-9w4a iioxewcsg44 f he 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-q0t,p* v* wimh )gxn7zV battery. What* pzmxw*qhi)g7v nt0, is the 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 capacitor aro e,/ *rqmsy60-cxqbh b+mc:be connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF capaciteb0 qc+6cx, obhb m :/-mr*yqsor?

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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 paralv xx0 iklng- +)qsd4y,lel across a 24-V battery. How much energy -gyx 4s0+xq)n kil,v dis stored in this combination when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, and zkyqjg8kxn1lm/sl9v 0 101 co this pair is then connected in series with a 30-mF capacitor. What is the eqjnq m1 81gl0/sckoy kzx09vl1uivalent 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 ;m6j qp s0n2i nioq/n*and 8.00 mF are connected in parallel. The combination in;jimq6pio/ 0 n*nqs2s then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connecb- nu f3f3po0 u*.rljlted in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is t. j0f -pn3f3bluo* urlhe 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 par,)cyjirtz 8v 4h cjs4.allel. The combination is then connected in series with a 12.0-V battery and a 14 hyvs.i)zrj4 tjc48, c.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 charged throug xx*o(v4p po,fz)+q*hkdqs y9h 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 char*x2w wbs8g( fzged to 12 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 seri1 rc6pm1xw (tces with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery( mc6tpr11xwc . 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 t zrn ubw2,te4.o 6.0-V. It is then connected in series with a 3.0 e r.u,42zn wtb$M\Omega$ 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 resistad s2ct9k dddn zu,,-s+.u ga1rnce 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 8x tbynv2) .modupwd05vs5+y0 3yx hvresistance 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-7qdd p6xcu5b rpa2i+0d cdd7+cv a 9hdhrc)8 internal 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 resistancezep0dpi, 2c ynxy1j* 5 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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