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习题练习：Physics Unit19: DC Circuits
本习题练习试卷来源于51fly国际课程 (https://51fly.win)， 为试卷打印版，您也可以在网站平台(https://autoconfig.51fly.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://autoconfig.51fly.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: physics  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 between the terminals of a b: 9vx4qdl ,rzfattery, when no current flows to avxf, r:qld 9z4n external 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 curre gk4 g3ajhvu+:nt flows to an external circuit, is k vjhg u:43+agreferred 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 te; jeh,zopid 6f 5+ yoa;qw:ou p8oj436h)izro 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 sem9 wxx6: x6ncuh;) .eewgjj.n ries,

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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 serierw u7 o k xg;xs7w-:kwz;p7:hks to a battery. If the current of 12 A flows from the battery, how mu7xkz :rpw7s u k:kx;7oh- wg;wch current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in s5t ck6l8ql2ttt 8xa,t eries to a 12-V battery. What is the v8q6kttl2caxt t5,l8t oltage across any one of the resistors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors arbrsv/0. ljb3)lmr a8 xkj 3l5ae added in series to a constant voltage source, the power supplied by s jm)0krxlaj 8l35b /bv3.lrathe 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 para9ca,og/z wy 8bc6 p7ulllel 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 conn5piqg o b; *8xq+ cpc;n2c3+kamvjlv(ected 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 resistors are conpp4* g7urw*cpky7 *oinected in parallel to a 12-V battery. What is the vo * prop*4ikyw u7c7gp*ltage of any one 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 resistors are connected in parallel to a battu,a 7h49kglec 49yueg ery. If the current of 12 A flows from the battery, how much current flows through any one of the res9 u,ekg744 lau9hyge cistors?

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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 string35jkmqek3/b 7h-thk7y vzby) of Christmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leadi/jyhyb-)3 t 5k vzk7b3e7mqhkng 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:;i 8:na89btcn bvg q2rt8 f:q8 zjwxlh 14hnp a constant voltage source, the power supplied by thew2zjrnq ;igfx hb: tp 488a:vtn88:hbqcln91 source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identb*w ; .g*tcb, omv.xnyical resistors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in sb .ym * *xvg.tboc;wn,eries, 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 rule f5q967 op wulhu3chn9.
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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 hux(.z 5ghhi+p 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 an example 2 4l;1ydwb vwm*ta8vyrxq u 7,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 exem0,y1b v7epiu 3p zb0cp z:q)ample of

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the equations here is val ux4vsr0ead fnc,f+ 78id 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 batteriesy0,6oyycin;uhu a.q; together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combinatio; oy,.h06ya ;nuy cquin 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 batterizd**zsctbte cm u :-+1xki.f;es together in series ("+" to "-" to "-" to "+"), and p*.fk- s *ebdzxzu1it; m:c+ctlace 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 together in parallel, and pl jl yq ,*xrit51f4;lxshksr8 4ace them iitxj8* 5k,l 4rsr 4sxhl yq1f;n a circuit, the combination will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in rfnkf * ucp- d:oa7kv+:p(p;sseries 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 ysf* w4/yyhz i(44 2 ehkaqu6v ltl;m)connected in series, the equivalent capacitance of the u4hlw)lky4i24qtv;ye a(sm/ 6* hfy zcombination 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 a ba44j r r).hy)a o9nidwfttery. If a total charge of Q flows from the battery, how much charge does each capacit4a.frriw4ohyd9 )n)j or 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 8yh3hcda).w vm c9g-xare connected in parallel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel, the eqme93tirng .plf5ap-2uivalent capacitance of the comb9mr t lp.a ni25efg3p-ination 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- -51qstwmwhcc6 a fv2 in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each ca1s wvhfcw5tamc2 q -6-pacitor 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 qu.u r b5-ov3k+h/n 4yyzetaw/cantity 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 ar*rl,zil89 ;np5mijl w/u /ht t3lic x1e connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltagut1 /p zincl 8t r/ l9,m*wi5ll;3hxije 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 sv7 k5xjm1m b)p* wlwr31:sx meeries to an ideal battery of constant terminal voltage. m1xw :vx35 1msbrwlkp*e7jm ) At the 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 ideal battery of c3bebfv 1gkvm0ov,-+ monstant terminal voltage. When this system reaches its steady-state, the voltage across10fg vvvebm+b o3-,k m 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 shouw2 en7abdzx+( ld

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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 additionw) j.nurm4v pg(l-q t8 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 9 fuv+ zy*ig4oproperly placing an ammeter in a circuit consisting of one resistor and one batte*z4 vigy +ou9fry. 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 resis;glf,huhfmoseb8ai5 ( 43l .ltance

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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 9 1axyd m msej,7lq -l0n;l.hmnormally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resisiz4ga m r. )1updxz1ri14iar 6tance 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 obtaine 6lmun 71l 1jsgpe:(sed by placing a voltmeter across a resistor. What happens to the total em1:(u sg7el l n1pj6scurrent 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 ammeter, and a voltmet4+ug6kc: rz07opr6zh)kq3ts5vts p sy 4 )uh wer is placed in parallel across both the resistor and the ammeter. This network is then placed a 4g6 hzwsuso:v6 up7+y 3h 4t)crp)z0r tskkq5cross 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 ammete:,cx sl.lbb6pr, 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 pl., c:s6bxblthe 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/ i,eznir0p+ s.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, an/3xr:pqr j4g xd 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 6.8+; lx2f uyaeu b/sb;:nfvhr10 $\Omega$ 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 intp* 8s(4jyl ea7vkmxt1 o 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 combination of /qco:rj;tc eguw: /y -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 n sz84n5nmoc: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 intolx 1 os7vd29zt 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 parallel combinationbfneu85 f i0b( 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 jb:, 0ny*(i*dlp wrmvappliances are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were o:dvljmb wpi,(* *0 ynrperated 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 parbc6q 515jgbduallel in a 120-V circuit without tripping a 20-A 5u cbjdb56 qg1circuit 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 q3gx8yx,rzhe(;f.6ig.p c)xskjg- o $\Omega$ 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 -lei qko4 vv*- z9bb9y30 $\Omega$ 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 :,ui l zghh .w ca+ghr38f6n)d10.0 $\Omega$ 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 a7-6 g)i ljxb9k2kiggaxrb /l;nd 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 5.0d,3 fd( gfejptr3 g11u and 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 un3 43qc ywg3m9.0 $\Omega$ 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 resista/dk1osv7bduvk1 /wn7 2a a m9 y4z:vxjnce of the circuit in Fig. 19-2?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 40 \; V$, what is the voltage on R1 in Fig. 19-2?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 20 \; V$, what is the current through $R_3$ in Fig. 19-2?


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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If 1.5 A flows througaha hp i0a71hc9049iajn g*oih $R_2$, 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 circus/):v x2:aie 9 senkstit 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. ju6;kv.tqa w()dypj,1of pf9il *3ts19-4, 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 Fig. 19-4, determ,91 -rx-fwsghvgcx*x ine 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. xlnigx /ly (/;+bqf(p19-4, determine 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 point C in Fig. dyeuu(j vaa1b1h1/ +m19-5?


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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 Cklz,mfx5 8:azbxx5 4 tb j7je6 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 point C in Fbmn ,, xqwhhn-1v 1wm;hr r5.uig. 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 Fi9vvbv k.52zz: 0vdmajg. 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 j:lw(g+tfkh o5a ho)9point 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 the9va26n8yvu s rhfu:v)1uaw:nj+v4 ee 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 4d)-3;egzlycm amic)0.hj dj 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 t 6*2kn/viez og* b:)c5dvq(yu)ruaf1ivpt( ohe 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 thou-p hmvm0; ns us:jc+xtipj98v4 ..ge 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 t qhsmco7/1o9 j9vg7 snwh5m) mhe 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upoahh;, c8fq;rpr z49xper left and lower left cop9h8q;rzc ;hrof 4ax, rners?

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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 equs77 a.hcfpun: m)5xskva b:r.ivalent capacitance of this co.s7x:n:7b cr.ak vsmf5) h uapmbination 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 ser t 4+-tmmysoqbmz-( yiq4(c (sies across a 12.0-V batteryz t ms(oq -4b+-cymsy4(q(tim. How much charge is stored in the 5.00-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 aryibf-t25 7g5bgsyjf9m ,e8u u e connected in series across a 12.0-V battery. What is the potential difference across the 1s755 ugbget8ifmby 9 u,jy2 f-0.0-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 ip4u,tw 2ks/umn series across a 3.0-V battery. What is the voltage across the2km pw4uu/t,s 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 1lr5 v,6hcswfvv3t1 jwdj-m3 are connected in series across a 3.0-V battery. What is the v t3lm1rj,vw1j3 c6 wvh5ds fv-oltage 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 c0zqwdhmh9d5rrg 2 +. 6.y;m lr(i mroronnected in parallel across a 24-V battery. How much energy lm9wmh(r0r2 r+;.ydo.5 6rhrqzimdg is 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( :j1q80ma.w 57oiq kh(rng xb vl:cpo in parallel, and this pair is then connected iwi x8o7k ra gqbp(50.q(ho vn j1mc::ln 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 8.00 mF ar vsvn+t .b tvm6n6xu*;e 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 equivalent capacitan 6bv6nv+;n xtum .s*vtce?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in p tb 11 :a0kcwxavuleg5j(6 z/uarallel. The combination is then connected in series with a 12.0-V battery and a /w(jk:cvgub xl 6a5zae1u1 0t 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 an(ny8j9o0xi63dc wje4 :m/xncx / b fokd 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. 9j/ : n e3i6kxnf x(y djxo8wo/mc4c0b 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 8r*v:a4vb s. 8 nylalythrough 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 vtwr k6d k 4sh 2cf*(38f:anxocharged 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 series with a 0.50-mF capacitor. The cap5pb yc d*5,t+ i3yl3 bh28mo4dl uaxjwacitor is initially uncharged. The 3+,5y jll 2ht u wdb84xmbcpyo a3*5diRC combination 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 is charged to 6.0- lb+zn5zgv(8bh9ol i8 V. It is then connected in series with a 3.0h98l8 o+nzb l5vibgz( $M\Omega$ 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 (jd -oy;umjd4internal 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 with a resistan5lh/9c;ao ;jtrwtd,m/oc. izdt/o x3ce of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistance of 10lrlcag81l 80rrjq g1 00 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer with a coil ri qfzbtxl lnz7))oa*)g 6k7 r b-il(f7esistance 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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