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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 b 9ji+v3 rnyix629s dkdattery, when no current flows to an external circui+2x9ndj sy3 9ri6id vkt, 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, m m2 aw;18vbemwhen current flows to an external cme1b2amv m;w 8ircuit, 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 resie85wn) gg oo5vstors are connected 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 series,u1 a. dpztnqt7/g /z1t+pcj ;zn8m)jc

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a battery. If the ccapp5 l44a x7qurrent of 12 A flows from the battery, how much current flows qx744cpal 5a pthrough 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 *v 17wipgoa a(n5zhy6battery. What is the voltage across any one ofna61 p *hi az5oy7vg(w 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 ar-grt oz3 eql4+e added in series to a constant voltage source, the power supplied - lrqetg+34zoby 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 resisto yoqw-z34y jj:)k ln2frs 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 cert,d p-eesth 6b 911qz4cx (dwqcain 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 q214-iseo-p p(p4hbzd;a2)z hclw rbto a 12-V battery. What is the voltage of any one of the resistob24-(eza-2 bio1hc)pz rsl4;qpdp hw rs?

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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 parql0b ed5o7ti-)yo k0l allel to a battery. If the current of 0bqo7l l-tyd0 5)eoki12 A flows from the battery, 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 connected in par-a) nliyh3br 6hsco/,md30m 3 hj t9suallel. What happens if one lamp burm3h0ctshyl d a ,jn3m -ur3si/9o)6bh ns 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 iqv52ucn1rdwi0ppz of5/c 1 r +n parallel to a constant voltage source, the power supplied5 wov fd1q2rp0icu/ n1cp +z5r 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. The maximum power eac d/93x 1gzf k9lycog4mh can dissipate is P. Two of the resof/9kcgdxl439gzm1 y istors are connected in series, and a third is connected in parallel with these two. What is the maximum power this network can dissipate?

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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's junction ru8i dd,paf faii7n5pg 96vqoq+w80 n y8le.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loolo -* g 8cfn)/xrqxfnzh2fp .2p 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 ex 1t)3so . hl 3wrcb:,krvpm8wuample 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 example o* kzg9f6nll9 pf

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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 showk20, s-uv6:rnpfq qxwn?


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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 b.x+fx 5we5ycn+ tsn 0satteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, tn.s+xyw0c5nsf5ex + 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 identical storage batteries j8qgh at( y oylla/h,(u.k0 y1together in series ("+" to "-" to "-" to "+"), and place them in a ci,(uk 08hhjt/y(qya.y lagl1o rcuit, 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 i9rjvjhl+ o xbr0 - d:h4y8bk0un parallel, and place them in a circuit, the combinati jrrjv0y9od0xu:-4b k8lhb+ hon 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 conn.b)vo r: nnpq,ected 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 j81+qlxo 2d suequivalent capacitance of the x s 1u+loj82dqcombination 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 seriesjebzu7u6z mqgnkb8+r- 7c z: + to a battery. If a total charge of Q flows from the battery, how much charge do:-+g6mzr 7ukqb7u nz+jze8bces 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 are connected in parallel 6 f f-1euytda-hgv pl27 i3*zyto 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 equivalenta rgjtd8g g)s6cg n) /1y:m,zm capacitance of the c,)agy )1smrn8g z:d/ 6cgmjtgombination 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 batt o2mu+55 ui qtuni2s ukvm8+2rh5wa,dery. If a total charge of Q flows from t2vmusr5u+ u5i22kn5tu i,d8 mwa ho +qhe 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 RC?;3qiq/ixr, q zq;.mmqlr0 65lp 1wq (oqulh*t

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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 capacitnl.mruzde y;u4hm)1;or are connected in series to an ideal battery of constant terminal voltage. At th.h)u4 z ud;;rmey1m nle 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 areb 8aosf4 .iudtf)3)qf1i cjm 6 connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, thf bfmuqj1 tai6s3d 4.cf8))oie 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 gx:kmyx+t/6dfwlqa a98c p5p 4c l1/j battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resis1xx fdg:k /j9c/py+w p5aat68q l4lmctor 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 shouldb7- bmxwvg+:v

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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 igm/ z 1o6whkfhk-x 5c,l+o6oof 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 prope9w.hfpzz(0r g7,a: hm f3gx6 heqpsf6rly placing an ammeter in a circuit consisting of one resistor and one battery. As p(6 6afgzfxrzq sfwh .0 :93,h7phgema 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 rr m4t o1-awl x+be+wf;m17zd 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 acu,4kex(zfdp;n9b/fi s o (z7 t)qij. 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 seris-/+bsi r ap8ces 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 p8j qr)hawi d9)iqlfxo/; noi)ao0f(6 m4 b7vby placing a voltmeter across a resistor. What happens to the total current flowing in thef;6iaq pb)oxdr 7 wij /o)n8)o(av 9lfq 0m4ih 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 sg2 1ev d,9lnn*ga.e ekeries with an ammeter, and a voltmeter is 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 dividing9* dn ,ev1aeg.k2lg en 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 ammeterm0ph1(bek ++1br i anb, and a voltmeter is placed in parallel across the resistor only. This network is then c+ph1er b0bk+a m(i1n bonnected 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, 3.0jitw rm5p)6,itsntivio )-f o 7pq)-4, 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 6.01fmunp6f 0r i; (xu1gp $\Omega$ 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, ahbh ,*hqzznugh/ emc if384(8 nd 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 series combination of a 3.0 (i63kudl: kio85 ybbn$\Omega$ 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 9r5lnhsk6w 53nndc yis //l5x a series combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination of l lc*xt2a /c478uesjy4.0 $\Omega$, 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 4bko fy nuf .)w6)mi1l7.0 $\Omega$, 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 para)x5yd berzeq27k2; bc llel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V circuit: 1200-W x+/spv7 ny yi 5dred 6l,x f-/+fj(2rnbj2nky toaster, 650-W coffee pot, and 600-W microwave. If all were operatfbfe y/6 nsyjn- + rri xvnx2kd/52+7yl(d ,jped 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 parecqykh+ x e)h)d7 7o/7+uhso*edu sg9 allel in a 120-V circuit without c+)s97) ds7h+o 7/*dhhgoke xqe yuue 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 2.0wbkyqw xr.+411 t1tg -qy9 m znv(v0ze $\Omega$ 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 an9rhmsmr 1k8d0aaq wkb1h)z8q77 hv 9x d 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, anw jsy*jt+ -wsy,ay+ocq z ,/9md 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.o fxv8bplw.n v 7p 3q*4)yt4bp0 $\Omega$ 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 9eajx+mi6tx njf+6 p u tg7cz8 f.0k+g/.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 9u p55l78i 1a2yswb vqu2ep(jd.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 theu,jie1s / l9nc circuit in Fig. 19-2?


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


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


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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If 1.5 A flows through r q(, f0sjpek8mizh41f, c4gj$R_2$, 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 tq7n dnbo e2jy ww5m/08he circuit in Fig. 19-3?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 100 \; V$, what is the voltage across $R_5$ in Fig. 19-3?


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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 4.0 \; V$, what is the current through $R_6$ in Fig. 19-3?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the current .p1h70fe3+dy*jy jmtupe;x6 /xtg/ wv mra1gin 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. 1q1i ta+xj ua0:b x3ik g j4r)b736mjer/hkit*9-4, determine the current in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the curre;qd+jte m0gu v.rom:/e wso )s1 ayv.-nt 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 rela)xqeq z4 j(aoihr)l17tive 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 kp.3x/el eat; nuc2 ah3fca: :of point 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 point D relative to point C in Fig. x5dx1 y: :dkyf5hg 4sv19-5?


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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 r841v; *;nmh toyw21pyzw pghFig. 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 pointjpr;,(b po(c(qb:f gdn(9y n) sayak, 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 i7lg3nn +,i *e/wqjesd n 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 in thgmmx2zy(zg3 c o:a;y )e 8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 0(nizw/ree f:h/uzcwdjcos4w7c 7 ; 44 $\Omega$ 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 rmq ds+ rn56 gkede,36$\Omega$ 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 18xtqpim2oe5 .8 $\Omega$ 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 /yldis/70nw d3yv fc,ce 5z0rwire connecting the upper left and lower left co/ycnr/,d ycvfi0l 50d 3 7ewzsrners?

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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. The3p2n9zligebyn 6gy( / equivalent capacitance of this combinati3lzbngi ynp 6e/2(g y9on 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 series az-v w+vk3f9 p gh1m.hpcross a 12.0-V battery. How much charge is stored in the 5.00- p13v- .h +gwzpfvm9hkmF 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, andst) ,4vmi:gcp4z 6 cuy 50.0 mF capacitors are connected in series across a 12.0-V battery. What is the potetpiv m4,s)6zcyc:ug4ntial difference across 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 3.0-V ba(psddrr8n o)/pfbnrl*l :tkm (:i:w1ttery. What is the voltagf d rpr t1i (w:s) 8lmpdkbl*/rn:(:noe 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 arstvv dso)n;* c0vd:qwt1f 78 ue connected in series across a 3.0-V battery. What is the voltage across t ws7v*t tf8)v ;qudcsn1od: v0he 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 parallel acroi 7bi8( cm9eaa:(qb cv* )sggbss a 24-V battery. How much energy is s(:bigqse8 )a7*icbg m( v ca9btored 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 o++ 2f.fj:wtx fu) ejhthis pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitfx 2.jejuh++wot:f f)ance 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 connerv4d fsxj,g 91z/lk1 dcted in parallel. The combination is then connected in series witk4lx/zsd v91 f1rd, jgh 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 connecteb35n; itv l tkd/pw9z -spgx(:d in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capaci3nwk5 t gpv t-:xzbs ;dlp9(/itor. 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 wl iye1)09zth mF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V bw) het9ly iz01attery and a 14.0-mF capacitor. What is the voltage across the 6.00-mF capacitor?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged tiixcv+9f2yc9g q7v o ;hrough 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 chargedfk/rdr3 k92 7u4a: hqw3hjidd 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 capac3p2w jqdk0u oq;9;g66uxy kmg itor. The capacitor is initikqpg ;dk2uuj0wx;y66m q o 93gally uncharged. The RC 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-V. It is then n( lqli z6jin6jst; 6j3r4c;i connected in series with a 3.06i c3 sjiz ql6jnirtn6l;;j 4( $M\Omega$ 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 res (/mj6mrjs6ej63zlw / uxd- bd ec4s(distance 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 ly:(r5k)/rpbza6rv h coil with 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 of6 cq umoaw:01 i5yuqg/qd5 1ig 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 of 40.9/8z1wkxb )9iidp hht 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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