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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 curn *f4k;uh:g y thc9xpolu(62h rent flows to an external circuit, is referred to asgh2p;x6th kf*o:yh(n4u 9u cl 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, whenir uy5bt b+ -aqxw 0(3.artbv0 current flows to an external circuit, is referred .iyabxr- qw+b(u t 50v bt3a0rto 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 batter z4 7z*fa26fbtyq 1gt*5uiyr jy

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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-9 jozy k7o2uz 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 sr ex pif(7c76keries to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the r f6px7c7(ir ekesistors?

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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 itbj-t2 7ts;g y +euv,is the voltage across any o-g2sibju;t ey7vtt+, ne 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* m)g nu(iuvx*+(d riz source, the power supplied by the sour um *d*(vi)x+irnz (ugce

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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 sdxk3pe 7x4ab 1 +-gkaare connected 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 parallp*wdqt..e*b0j v 7 ch4x(dx +c-tnz wxel, 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 *, be 2gxc5a irzfux/pzsl d k28.5:doto a 12-V battery. What is the voltage of any one of the xdeap./iudsg5x:bo2 28fz rl, *z c5kresistors?

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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 battermjclm;u/t1veuff r h*xz+4 v,z,5v xi 9k,1w ry. If the current of 12 A flows from the battery, how much current flows through an, rc*mhu451m,kiuxzlz91vjx;+ t,vf v /er wf y 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 coo,4q96 p kuh*x gkfz c4.1omqcnnected in parallel. What happens iqxc1 u,9.o4ghpkk4qmc o f*6zf 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 voltrc+d 2rd bx- fe56o.v2gr jf/rqyp8n5age source, the power suppliexcnvp +d g -eb/ryo qr5625df.frj 8r2d 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 resistors, each of resistance R. Tw8a9 p1yu4ktx6 ufbp- he maximum power each can dissipate is P. Two of the resistors yp a1uupf6 x 849wb-tkare 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 ju(t0xg ei k;c*hnction 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 lom*u:v7 n0qftq8px /ae op 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 e1.gv )p2,)rsg;a zacvu l7mu 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 pjgigc( s8+;zan 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 circuit shownef p)w3qlx lw2*s0a )j?


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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 iddam0r i7t:; kn series ("+" to "-" to "+" to "-"), and place th;md07i :tdkr aem 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 ixaww 01s( vm62h7dn8cw hq4igdentical storage batteries together in series ("+" to "-" to "-" to "+"), and xg78qsm( hdww410cva2w i h n6place them in a circuit, the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries togethrm* x:ad0 sn .pq -5n5bmq*eayer in parallel, and place them in a circuit, the combi0qx5.n*-a *dr mm yqnb5s:ae pnation 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 connected in series to a b7iozni -x(/yv :j i+zjattery,

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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 capacitance 2ke-i+*c 2xci 1c3 yjttep*kjof the combination increatc+ci-* jj* 2i1xe3kk2 ctypeses.

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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 agusqp*)-hgb0k tbuv2g w+j; 2 battery. If a total charge of Q flows fromkh 0w) ggbvtg q+ *upbu-;j2s2 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 ared*m 13v/ vkc.xonkm/ej5rnl* 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 1 b9rpq jc./3ll;ui-pgn h am9in parallel, the equivalent capacitance of the combination inc31.bj can9 gm9ul pl;pqr/-i hreases.

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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(9 6ryxt0 dfo 5fljn/re connected in parallel to a battery. If a total charge of 9jrrxn5doy t /(fl 06fQ 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 qua ,s jwby:,fbs ,r*tz;pntity 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 toig4f+i g g8b nhxigbh.y2 93xyur6o:zs36 l 4q an ideal battery of constant terminal voltag6sii8yhggqb:xn4gb2yu x 4 +fo iz9lgrh 3 3.6e. 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 co-9u3 : 8ns- li5h pndie+ivmivnnected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the v5n+i -eh 9 livdis:um-i pnv38oltage 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 1plon doh e/)0cm2cc d5d,j)j battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resistor ispem/)c) 2c5ojdol0j ,1hddn c

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shoul9:ol;r d:ot knno8 -vld

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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 *u ii zui 4*ee*-dz:zla

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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 prmotk8t. -ts7o operly placing an ammeter in a circuit consisting of one resistor andtsk m to.8t-o7 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 a;u;vrdt b vf5w0-y*ojmmeter'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 fr ks :,5q5e(/rah rbhe3nwc,lakiy(,vom 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 seriess)ghmlkec4u 3 s9+ n;: ahe2yzdnr9a) 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 v* u i- anbl+w(fra9xk5oltmeter across a resistor. What happens to the total current flowing in the circuit as a resri5u( abx n9+kwlf-* ault 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 5oj/lx 33xhha2uau2w 3kr,cn.ic, faammeter, and a voltmeter is placed in parallel across both the reshx /wan5fkuaioca3 h , x22c.3u,j lr3istor 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 apynz)1 j v(de*06vxais wired in series with an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes theey pjdv)6a* n (xz1v0a 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.fh04( ntg.ia iya:xh,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 6.4hx t yb9-ol6be ar.4 risl8bo je0k2+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, 1okk0m)z /g ty*2, and 6.0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a seriesgjr*hfo9 9df;(jyem + 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 a 3.1 7 d+o3q erj08btpwnp0 $\Omega$ 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 com53+njs zhawc+b 3- ujmbination 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/(rrwaes2 c0p .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 aw+w gx0/ yzwnju(ry+4 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-W toah41*qpn qh,b4 ck )jstster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current wouldt 1sb* 4ckqqhhj,)n4p 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 parallelq 0: csm(ds/tk in a 120-V circuit without tripping a 20-A circuit breakert c:ms( ds/qk0?

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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 x1 3 hej ivkfn0z0cmemve5n6 :09km i2$\Omega$ 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 e(:lm t1 4dptp$\Omega$ 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 10.8ydwi2/ :qlm8jwc n w40 $\Omega$ 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 9.0zjq; 4;lc3n ivl3ab;v $\Omega$ 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 iy s(bju 0tp8p(.k:zb.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 9gs q.8k ;i-fvb+ mu66m y9trwc.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.q.bfn1xd + rh( 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 throug7 ozulg zm (1 sk+onnszmdbirnrlj.5)64z: 60h $R_2$, 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 cdkybtx5 e.w(/ircuit 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. 19-4j7 ms5uq5sg +c x4 hm-b.h+kjw, 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 Fig. zdi0m5dl ; 8bn19-4, 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, d 2*fkxdn;wi1:dr.6js- fl iknetermine 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 re sdm6z.hu0 /4 ntr/ xim:/qxbwv-4s mglative 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 point C in Fi z 3e9gg6,elcsg. 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 *uucuw54 ycq84lbe (;wf v/ vrFig. 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 ixh,h yud+om/a q.(t )w-wsb d4n 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 Firfnby ;0oe)knyuk jugc33 h5sp0 2 /h;g. 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 currenm yd9l )w o)kma0ye+bfr,5o5 ot in the 7 $\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current inhoj:m n4 4*fwg 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 thgtumhd *oik2q6 5.dh (e 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 1271j5 u4rua(hfq4niz aot9e t *.wi q6u $\Omega$ 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 18dl3t8;+qgl upi)m c, u $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upper leftxik nz awscu2 h+jh/vu1n2,.w4 xn0 .:i m9mdy and lower left corners?y4x 2i.w n,.wiua0x2n9ms dnjz/mch+:k 1v uh

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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 co-vdqkcgfe gl h7vytt 8+ 2n 5m02eu,p8nnected in series. The equivalent capacitance of this combinatiotghgk 2,20vyq8 neu- pdef7l5t8m+vcn 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 oa(78v flv:0x w +gvdzseries across a 12.0-V battery. How much charge is stored in the 5.00-m lvvwxv(ado7f+ 0z:g8F 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 muyud2g*sud m4p4s ; t5F capacitors are connected in series across a 12.0-V battery. What is the potential difference d mu5g *u; tyud4s24spacross 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 ltj ywnx0z, 2*:u7+ gnaay- d4ytt,l h3.0-V battery. What is theungldy,ltyj :x+2tw hn7y0 a4t-a *,z 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 are connect:0un2 pym )gce, h w 1dc2+tmdcqiz.w8ed in series across a 3.0-V battery. What is the voltamgpqy c.2)u+wdh2wzc n:1 ,e 80mt dcige 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 inf1c1abg ge8(k parallel across a 24-V battery. How much energy is stored in this combination when the capacitors areb gef1c 1gk(8a 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 flmh,ttrft8cnf07or )w /w1 eka3s (3in parallel, and this pair is then connected in series with a 30-mF capacitor. What is to8kt tr m,h sw (a7wc/efl03n3tfr1)fhe 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 8.00 mF are cwvxfl2rc6k:+907mp2wrgh m tonnected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitov0+2rr2g klm pxfcw9wm :t 76hr. 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 mFt)5whm4 hrrqc+m 1g2e are connected in parallel. The combination is then connected in series with a 12.0-V batt)g rc2wq+mehhrt541m ery 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. Trxri qu;k7q .ct)+77x, dxvpehe combination is then connected in series with a 12.0-V battery and a 14kue77. q7pr;x idc,x rqtx+)v.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 :60q ax 7g7 u;.gtcavz msdmz.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 and then discharged thr :jyqu2/-0i4rj3odnahs s 5hr lq)q0x ough 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 wi6/h0 jxgbq b+oth a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the chanxo/g0h jbqb6+ ge 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 chargcqyl02j c gg0p5 wsy(tjip4/ 5ed to 6.0-V. It is then connected in series with a 3.0clijsytcgj/y g5( 40q25wpp0 $M\Omega$ 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 of 100olm,mev b ew73 (uj;y4 $\Omega$ 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 resistance of9umc2q tib:;*q(j zhc 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 resistanc 79(km u4l0wiea i+us3y0e lkwe 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 oc-.i.jw o( xxresistance 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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