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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 current 5kbqw6s ar+e8 u(d6 ovflows to an external circuit, is refereaosr6k(uq d68b +v5 wred 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 baf;qa 62; nfhynttery, when current flows to an external 2hy; nnf;qaf6circuit, is referred to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in series to a battery,em 8 v 5lu)kbem-ncc2

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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 seriesu*6b rucoixvsz 8i)t vd5v;e+y;,i.l,

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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 conned0aqbc t5w/k:w +lp*ha*l *jgjj lins)t 28d+cted in series to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resistorsi*++2da)8* bgdkcj* nh qjt/:l jtls05apl ww?

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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. 8oi t70derrb( What is the voltage across any one of doti70er (b8 rthe 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 sourceabtw)vqb afm;3c6:d)bw k , w*, the power supplied by tbm3wcfa6 ;,)twvdkw bb)a:* qhe 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 resistor0t ( l a6,f;+guntkws;m7,qvhfqm c;bs are 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 parallel, we can be certaij,ydd2m0trf g0 *tmd+n 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 pat2l6zr*przb; rallel to a 12-V battery. What is the voltage of any one or62tp;zlz* rb f 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 resis.rrvnx97 ;1z f:lthhd tors are connected in parallel to a battery. If the current of 12 A flows from the ba nh.zxvr7;r1f:9t dhlttery, how 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 of Christmas tree lights are connectedtp*8:m)+enn . t/z4vsw egwdx in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the laxn dse g np.8z wev4tmt)w+*/:mps.)

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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- ve,;ki v;zplx* uycl,a )2ns source, the power sc-l; ),iy2ea nv lz;spu *,kxvupplied 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 resisto hf8z2k )qo5or9v1kot6yk 5s vy8 :lwxrs, 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 can dissipateyv s9 wo)q 1ky6ktx8krfl58v:o oz5h2 ?

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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's junctij .oe-g;4.vh; g5 fekty(;x g2dvd)oskvvb 4oon 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 loxdm*mpx(a e:xk1 u0 3mop 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 exampl*biodwttilqf e z: w; d8l b-g(+8sp5)e 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 u2mti8, xu7j9.fxwsf fwt g8rt63 ie1is 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 cce+ zh; f/37rmv jt1;o6w*bcvhcnde- 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 9ve uksr0e). snt5b 9tp+p4 yxseries ("+" to "-" to "+" to "-"), and place them i)0te spsp kterv 4ubn5xy9+9.n 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 identi5n/87svfger n eq-5 qncal storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a cirqn/srvn-e5 geq7 f8n5cuit, 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 nkkw ggqv :cq.*ybv f)--pwl8 +g9a 9jparallel, and place them cwy +nfv-kgv ggqq8.j99*lawb:) p-k in 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 series t+(0yoo*l: 4 enpe1zuoypk4 mu o 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 seriea0 -6:+zgowatj6 somhs, the equivalent capacitance of atwmjao 6g06+sh:-zo the combination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capaciqbqw:u:- s6uhji a )l+tors are connected in series to a battery. If a total charge of Q flows from the b-jb:q ):ua6+hil qwsu attery, 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 jd fpkb*+c i b*z1gm:/60vuec) ch8m:zqyk /d are 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 inf*s+dpx; i4zw parallel, the equivalent capacitance of thei;4w+dx sfzp * combination 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;maj*zu .1: *q3sguqvax(mrv connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge dz ( au s*:1 *a.qvq3mxvm;jurgoes 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 qu5schta 6qa1b7/23 gs( 6fm w cjhou1xqantity 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 seriesyg 4lh9p wj 5 yttgy92)yftj61 to an ideal battery of constant terminal voltage. At the moment contal4 gy ttpj9gf5ty1ywh6j y 9)2ct 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 avgij29ap k /vt7;7nvgre connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acpvgvj kv97t 2agi/7n ;ross 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 id0b 4d eyppb8f1eal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across y0fb p84epd 1bthe 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 shoul/0j9jtf sn2b )a* h7akklj:b vd

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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 a(gw*0lho dcnue0 ytb,2ye* ( -.fubrbddition 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 ammet,xx il6xbgah 948j:keer in a circuit consisting of one resistor and one battery. As a resulteh j:,4bixxagl8 x96 k,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistanc94kd(wblad( cr2*l w ,q mb+qpe of an ammeter'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 y:vf22als6io8 imoy20sz 7e::kt xrra voltmeter from 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 seried-:gmg 8 2b9fel7r 5fao-l dwc zvp7d5s 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 obtai( ldjx r(l sh4*53jzldned by placing a voltmeter across a resistor. What happens to the totarx(dj jzslllh( 4* 5d3l current flowing in the circuit as a result of this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, and a voltmeter isy72 zts* v d7c9h drz6mn:pfm9 placed 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 theh 7f9:zr*zy72t psvcm69d d nm 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 afg 21fw;:3 4xavhyznymmeter, and a voltmeter is placed in parallel across the resistor zvy1;3g f42n: yh fxawonly. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, xc u -cd1kb):j )ia.ej1 znn3k8*o vmo3.0, 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, a u7);6 j2lye -p b,cbkt m+ldb/bqjvt8nd 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,golkpv;h ; cqv( :7xh8 12, 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 sev4z 7efc1p yw,+ky9cf-d kfl 9iuv- *+ds5 qyqries 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 se zzz*ubtpm l 1mgwm3- xl8tz14/6pyf*ries 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 paralvqd-e/ev 9b3ql-o b9hlel 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 4cdb, stzo6/3v/e ygy( .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 i o)aeuarnk:,jf ;4jx) 0-rghanto a parallel 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 appic*/v hu*k 6,s.mav;dje 4kcmliances are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot6e ,kcsm vkui./;vh * c*jm4da, and 600-W microwave. 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 you can connect in paralleavfas:.ho*3+dr +kt;xyuey 7 l in a 120-V c*ae +taky;+ fo.rxhvsd :3y7uircuit without tripping 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 qufosy/ 4laqx48 1jh(p3vvx*$\Omega$ 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 a,3gmc :ixk5+ d r0fdsznd 30 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, and 10.2rx3uz u 3bl7b0 $\Omega$ 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 9.0 tc5rw8c8s z3 +u1 snxfw0y)cz$\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 4.0 $\Omega$ resistor?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9.0 a oru)aul- 96i$\Omega$ 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 c9hvf/tz)i:;mjn )i h9.0 $\Omega$ 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 circum 2wi5u1wnc --sz 0u* q8jn9/ asopekait 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+v42vdahj shhhum+/ 1hmvyhyo*6np10 v78o f $R_2$, what is $E$ in Fig. 19-2?


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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the circuit;k e;sc9 lx9wmjs:r evcwz9-2 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, det1vxfrw v *ibfr;6nip p47y8x8 ermine 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, determine the*nft-,/ j-8g wqy0tei( ipn p acf)+gw 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 pp(2tb/b kc1d, 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 rel)xab c9f vzh1+c x(y(rative 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 pointfg+4y.tv rl i2 3 kfzkzu5xo9* B relative to point 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 pomn;wh 9ofd7dq9ef6b- int D relative to point 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 thvr7jxx 4-s9m5fx1 ojue battery in Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A to poinrar/jgn f s; 8bl;jt9.t 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 th f1,3hs4gi:qd m76k h ys7wrmp9lk, rde 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 currentbp, q,(iig:jmq lrse3zwn5 26 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 ins.st3v 5qt/vt the 4 $\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the 12 do3;s iysry.p9+0yg z$\Omega$ 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 1iy* d4+ ,.0lj izci9)wclwna mnm87p j8 $\Omega$ 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 coilit ,o)o tua 7g:n)t/nnecting the upper left and lower left corner:li7toui)t)a,g tn o/s?

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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 capacitance of tb* 6-*uaq/ano ewr;r phis c /aupw*oq-;6arb ne*r ombination 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 connectoo2 :ln(ux5ared in series across a 12.0-V battery. How much charge is stored in the 5.00-mF capacito2au :l(rn5o xor?

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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 seriesrdiw2;s3lm1-tno p 9x:sa k8b across a 12.0-V battery. What is the potential difference across the 10.0-mF cap3 do-1;nk2 sst: a i9m8rlwxbpacitor?

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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 xu ddb:x -7 yfho- r3)4l,lepda 3.0-V battery. What is the voltage across the 1.0-mF capacifd3uy 4d:b --plehl )7xroxd,tor?

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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 connected in a.auj9wrj* 3g 7 -tnufseries across a 3.0-V battery. 9uan war3j*7 utjgf.- What is the 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 par b(n i iht3y:-l;sdku+allel across a 24-V battery. How much energy is stored in this combination when the capacitors are fullyh-:i(yb;ul + i3tdn sk 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 i-) sk+ssp 9/n0rk8 uxwzo rf;xn parallel, and this pair is then connected in series with a 30-mF capacitor. What /+wfx8 s9k )usszpxn ;r k0-oris 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 are connected in parallelx)p fcu( lcyxx2f 1*y1. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What icy )x1lf2up1xx(f cy*s 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 wqmh.ymu44c)p 10fya/30ylbiq: okm connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. iyq 1bymom 0 .p k4:)3/acmlq0hy4fuwWhat 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 paraljj9 q+z .rx+bnk00pr;muu n9 flel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across the 6. ;f9 nqrp 9jjz0+.rknumx0+ub00-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 c4 uv9ft r,09 );sp0kpx ur5ei,shiz nqharged 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 t fvm+0e/bi5 ch+ g;myz,dh)akhrough 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. zmr196fw-j v*l q4vc3u z4sxllb :yv2The capacitor is initially uncharged. The RC combination is charged c lx:4v 9l 6zm3js4v*z2v yulq1 bfw-rby 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-V. It is n-+eo 9qw+ s2x mmvse,k7- kkythen connected in series with a 3.ms9+mv ky,e 2kw- 7 xk+s-oqne0 $M\Omega$ 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 resimz h(m 9p59jvkvp2 w5bstance 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 with64h r;citgdk6 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 internal resistance wwod i3pc uf3ibsi va.h48 *38of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer with a coil resistance ohp s5 k6s 0tcboxx7:2cf 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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