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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 tecbzcee per b:49lr18/rminals of a battery, when no current flows to an external circuit, is referred to as 91bele8p4erzrbc:c/ the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential differsz *:afe-lnf,c zefq4k7(dpo1g:/g qence between the terminals of a battery, when current flows to an external circuit, is refer14:/ ff 7:l,ozsgakc ezpq de(gnf*-qred 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 sersg7xndeei)q(k ,51p fies 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 inwxh 9)e,4cx m: .l qvpnm;gg* wrs;ya1 series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resist ) gv4/ofuq f(s/og-8po2jaluors are connected in series to a battery. If the current of 12 A flows from the battery, how much opg 2qog(as-fo u vfjl//u)48current 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 8g rdcuc8l; v)4 k1zprin series to a 12-V battery. What is the voltage4vl c kcz;8g1d8 r)pru across any one of the resistors?

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

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a const+z/ 9u+qhp1wrg s: )batf dmzq r32.jwant voltage source, the power suppq z dj+uw.p/szth 9w+ rq2rfa:b)g m13lied by the source

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connect8x;yx z7x9k zsed 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 inw+rz-uy lm*m .xubp6yl842wf 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 w/e dk:4+b/q qm6eawy are connected in parallel to a 12-V battery. What is the voltage of any one of the resemdey:qqaw/ / 64w+kbistors?

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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 connectt.0mj saz,y+ck4mvo,xe 7 x*yed in parallel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resistos74jy exzvom,0 c,*.m +tkyaxrs?

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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 strin,,rfxz9w 2qxvg of Christmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wire vx9,rq,z2 xwfs 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 v( mog1izn*e48zb. . hfn oxcjuhs9;9iy 0v4i a constant voltage source, the power supplied by the si4ei (;nh fz*yhvmbc 9gjsnv.zx.u 048oi9o1 ource

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistovlnr*9 2 q2zrhz)v;f jrs, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected izj29vrhrf )nz2 ;q*lvn 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 rule m7wqw 6ev( cyt09ymy;.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loop rule.9jjypx2 :3+;nz ktb xp
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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 zyy rj0y sp8f 15* c(xkqnr/r8k.oaw 8an 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 junctionbml ph .v1r77i rule is 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 fz--tp x e)+zqfor 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 batteries tozkbsljjpe2. 6(uc0 4cbzz )6 mgether in series ("+" to "-" to "+" to "-"), and place them in a circuit2z)keb cbsj66 jcum.(pz 0lz 4, 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 iq mnr x/pc9i0sve91/nz ,n7wcdentical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the1ns mqw0cn/pr9ez7nx ,9 civ/ 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 iden wo(2-;8qi wous mqmg8tical storage batteries together in parallel, and place them in m(- ;ows m8qowqgu 28ia 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 to a be*sq pm cw d0:bgnf(77c3xx 0lz3nuc5s. ptr(attery,

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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 serihj fp.sl .7(mges, the equivalent capacitance of thefp s ml(g.hj.7 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 capacitors are cfj hfel ,n6t8*1h -d;g-ws h8b,xd szmonnected in series to a battery. If a total charge of Q flows from the battery, how muc8etjs-s d8hf-fbhh zg*,dl61m;xwn ,h 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 are connected in parallel to a batteraliiv 1y; kcos +:2 kq1eay/f5y,

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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,:5qkbtwor h19w w3yf/ the equivalent capacitance of the combination t9: 5f1 w/q3hwrywb okincreases.

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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 connec-n7: r( v dycapv4v,xyted in parallel to a battery. If a total charge of Q flows from the battery, how much charge does :,7-xdynv(v4cvrp a y 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 for47rcph.pq wyr , gqxc*sl j4;7/l sqf. the quantity 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 to an ideal b4lt e r(a370y ixspfe67r+lqiattery of constant73x+ lils7ieq0 (yfaer r 6pt4 terminal voltage. 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 connected in series to sww7 /p ajo*n;an ideal battery of constant terminalp*wwa js ;7no/ voltage. 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 series7uy/- lxquaq r )-01fw nmn,zp to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resist,uynm1-zwn) -q /u7q p0lxarfor 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 shoul4h tahoje+kgsttz 8 54i7:w m5d

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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 amme*qwgmy*zpy-ln -9 ao;ter by the addition of a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obtained by properly placi5vkpl4q1fh k )k0 rdc:ng an ammeter in a circuit consisting of one r1)4rv cdkk5h l0k pfq:esistor and one battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammeter's shunt resista ecx 7r5jj4+dvnce

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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, onzfps ;2hic/ 9be 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 a3 u0/nm lk3wdv 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 obtained by placing a voog8:d u w583cu4mrc ( as;abqeltmeter across a resistor. What happens to the total current flowing in the circuit as a result of this a3 c8dc(rubsa8u:mg; 5q 4eow 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, nouyuiky(a o;z gto;lj3m7e1p + ) k--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 dividing the voltmeter reading by the ammeter rynoui)oly3;kg (-a pez1+-7kj;umto eading, 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 ammeter, and a voltmeter is placezgf-y:c q.(v w (of,/c)mpydid in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the re v:/ f-dcm y(gic()p.yfzq,owsistance 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, 5.0, anx+zt +wab l.s jxk7.1sd 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 uy7(/jysi7hcpgel( 83kmz aa6( 7eyq6.0 $\Omega$ 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, ioia8 4x 1r z;fxf: qr)u*i.nq12, 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 series c5togfa)ek* rh n /d:9kombination 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 s ;ig;.y4gpkfj eries 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 in9h7flxv+.9(p5nap lot (dp ha to a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination otx )sq:lb: lac;)0ak mf 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 q*2zu -kebr1 sa 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 appliances are connected to a 120hu m; em6:ln60qyv*lx-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated aq vllhm 6y0m:ex;*u n6t 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 1zlkcbor(*ub; fwqeod.12 drvc5xu06sh9 x2 :00-W light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A circuitx cu:okrrzq52l(cu . od ;fs*92b0 e1vbhx 6wd 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 x/i.ya:l5 wb l$\Omega$ 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-3 .adiboqkkk r ;5ze59f.yr bj;j;yvnd 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, 6m6k3z,m:u/y lpe1g u uzd p,a0.0, and 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-(q4y 5 )4nyxxdxp wyl.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 5.0 andp2 kxl+r2gil53t7yqc,kjn8i i7/q jb 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 c8f;+u u c/d(bh+bfirand 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 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 t( uwt65znz5fq4ow 25shtpguu /l iu. 1he 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 )0fs nlb 4vzc e 61olfnz7q;ac:wc*c +$R_2$, 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 th(1fz, 9zox0x )/ux6vy kjipbr e 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 in the2lpaxju8 gbh4/knvp)phbh*: 9+ p )yc 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 current in thgaafdy1e9 **d e 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 cu9tm lpt4dv,*nfb9:xy ) 9nd, p-adpyqrrent 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. 19-5? 9vof3c)cy g19igsyfbx 9c,h,


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to point C in Fig. 19nolh.+ *;) q*jmx5yj5 upqbvw-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 3+5zrxr6 jiac 2bjc/c 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 t-b.en)5 2efyq bdxs2y he 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 poin8sdew*w 2:v aycs 5pl3yi md59t 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 inx8 b jc4a7ompb1 24mn,.hq*qzkktmg 4 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 inq g(ibavml0; su+jz) , 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 inzu9 4ms rd va-ehq1st;4) ai)s 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 wqlvfy 6; 1f1a1g;zoy 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 t2iu6; tnsnod7 ni9fr:he 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 upper left/q+y/ rhld4b-y jo +yo and lower left cordy /yy-rohql b4j+ /+oners?

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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.c vp6p *3 :1fr gbk3n(dfu0 vudb/tscltx.5k8 The equivalent capacitance of this u.tcs* rcn d(0vbp513f 8dluvbgt kk/63xpf :combination 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 capaclyiq 0oe q ;k i:4ljp*vk0:)c 0cwi4aqitors are connected in series across a 12.0-V battery. How much charge is storc i0v ;:p aqq )ky*ci44ij0l :qlok0weed 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 ca6s .a)x()jla2tpomp f pacitors are connected in series across a 12.0-V battery. What is the potential difference acroa s oj(2. 6xalpmpft))ss 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 k3toqzxy 815,fc 0wj e3.0-V battery. What is the voltage acr5yxwz 08tkj, c13q foeoss 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 v),w )u9 bt2o u*xmpe/slzf.ncapacitor are connected in series across a 3.0-V battery. What is the v v)l9bmwx,.2n*)fz/t osuuepoltage 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 convbi g,p4i6x wfac5d02nected in parallel across a 24-V battery. How much energy is stored6c 0a2bipg45 ,xifdw v 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 thix/frdcb a) 8lha1k4p2s pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of thl cpahd)f84kax2 1/bris 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 pa6 5z. y( c)gzr5awby -wghq-forallel. The combination is then connected in series with a 12.0-V batt h zo).qgb5a--c5g fwwz(6yryery 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 connected in parall8f5r pd y)w)jhsrrvpy v65;0b el. The combination is then connected in series with a 12.0-V batteryy h5p)vb8vy0w5j6sr; d p r)rf 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 zw:1g,,suzx4nkqw 0 pf7r jk ;connected in parallel. The combination is then connected in series wit7wnq,wkur fx;spg kzj4:,0z1 h a 12.0-V battery 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 through gl.e ;xrn jn-9a 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 cha,h(9m7 sg u/s3i8bibbp.wk v))cgd n vrged 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. Th/e bna6.3 n7bahn7it*y;k jnw e capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltagwkb63 n;ty*7inej7 b .nna/ ahe 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 cox5 akt/p7u )z p(y5ws,oqip h+ h*4hqsnnected in series with a 3.0z p(pk5xwqou,h+47yq5 )a/ shp ihs*t $M\Omega$ 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 inte(t- ( l+zh: yzvbxi5swrnal 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 w: h,mg(lpu(qo ,8bsxf ith 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 of;h91g- vuswvc0/u;xchj1ba. m b+l ws 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 ofuo yxq0* 6i gutp;,z9i 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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