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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, when4 hfbzjx rtf833-k.dt*np+sn no current flows to an external circuit, is referred to as kd tht+.jbs f -f4n z8r*3pxn3the

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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 term g(oiw)y5d3y einals of a battery, when current flows to an external cir (wgod)i y3ye5cuit, 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 cohbok ,r2f 4rw(nnected 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 connyq*1 qnu,8w+giz20meb+2jcy2 vzss vected in series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in s8e/u/ b/ j1g(i5vxlubal. zuberies to a battery. If the current of 12 A flows from the battery, how much current flows iaubj8l bu /( u1/glz5xb.v/e 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 series to rz i o15u+dy+ya 12-V battery. What is the voltagridyz+oy+ u51 e 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 0f rooz(k 7d2wg3*k oxin series to a constant voltage source, the power sud0gr3*w(o o zfo72kx kpplied 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 resi)7a z qqv1im.wmi ,+7fjy 8bqmstors 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 conne,r p0oi (u25hpnjr8era( ) qhvcted 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 connected in paraly8ysg)8kte;asrluz1c)u / .r lel to a 12-V battery. What is the voltage of any one c;r1g)le8u ykrtaz. /) us8 ysof 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 resist46a.5sofojs 7d0h ex1(q jlearl7h on2 k2:dqors are connected in parallel to a battery. If the current of 12 A flo27qdhrj7l se1an2s fxh0 654(.e olqao:jkdo ws 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 Chrim. rv4zq*f:x 2l6 vn kxwka6v;stmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume nk:nv6.4awz2 fv q 6;rvxklxm* egligible resistance in the wires leading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in pagfqe) 4-87 ujyljiu2 trallel to a constant voltage source, the power suppl utu82f-)7j4yi eqjglied 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 resistancel208detk dr *z R. The maximum power each can dissipate is P. Two of the resistors are connected in rd*dtl z8e0 2kseries, 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 junct ur0csox.nx 85 ;r.robion 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 loh*d.u 5ccw1 fmbwn j j9(h7b2gop 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 exaa7bx4vb*8fy hmple 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-rr- in2bb)o2m aagz - 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 zl.(5dvzlxq 7here is valid 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 battea dum- 1 gbdy ci(jg(n69oj3uu *5jzr*ries together in series ("+" to "-" to "+" to "-"), and place them in a circuit dgyjmuuoc(zbargj6n *j u3 -i*9 (5d1, 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 together in :9uszlbor6b2 series ("+" to "-" to "-" to "+"), andb69lru :2zs bo place 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 parar82ucqhm(d:kv kau2 nnygh: 7s vdj)l:06v.s llel, and place them in a circks(a c nv:murh70yn 8shud ldj:v: 2qv). 6k2guit, 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 xu qzb0s+7(kvh/q7ty gk(mi5 are connected 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 e 4/xk 9gqvzk0mih34ed3tix9 bw+9eg g quivalent capacitance of the combinatio49 i 3dgk9z +g/khe i3qm xb09xegvw4tn increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capaci:tl srrlpnf2lu;5w j4 *og j0-av5wj :tors are connected in series to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor jawr* w5ft520:l;us-4gl np jvl:jr o 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 capacitozd vda6c45 qx94srvu( rs 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 zuk5(ubteq/.cr/ oy -z ge-: kare connected in parallel, the equivalent capacitanc okuu/cz - 5ek qbre.g(/yzt-:e of the 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 connected in parallel to am2e5 wn:fd( htg; ip+9 ,z to.y7hrpid battery. If a total charge of Q flows from the., pied 9gyhhimfn +wp o:(tr7d5t;z2 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,6+ 6h jl;w3grmm i1ovu crny7 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 c0q yrb,-rn9 tetku.7to an ideal battery of constant terminal voltage. At the moment contact is made with eu,n .0tyr9k -t7b rqcthe 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 ak7j(ze2 1tuq4a hp*vzre connected in series to an ideal battery of constant terminal voltage. At the moment cont( hkua72 vz4te pzjq*1act 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 capach e jaw .q s3xude2lw5hv;n )8)ztz5g5itor are connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resistz5ht )gedlu ;qxwav z2hjn s )ew835.5or 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 shoulgix :h9 i7xw9fd

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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 ofwe ah29 vfm p4f33z5yz9dyesx3gw()m *im e1k 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 properg3w+eimh/a* / jn rf9oly placing an ammeter in a circuit consisting of one resistor and one battery. As a ag//w9*r o+feimh 3nj result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resista5 pk *czuzxs:-nce 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 a voltmeter from a galvanometer, 8 t(ht)jgby f ia)*h-wone 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 series rx-o .yo w/3 dfbcj2-quesistance

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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 placin/4qz q+.pq gudg a voltmeter across a resistor. What happens to the total current flowing in the circuit as d+pq/4 g .zuqqa 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, 2b1 o6im0yy1v;ruqxx9 7lpbc 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 dividin2 xlpy;1iu6 cy ob0r 1bmvx9q7g 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 ammeter, and a voltmeter is:l/l6m5yo gfg5 w/ux m placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistu/:l6mw mgxy5 l5o/fgance 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, y-g-;93fs nhz dt2yyoba(x,g 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- (xna,+n rcdi.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 12obl6ieuro5 q4sb( / +j, 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 series combinatiof/+ygvw uz*6gr f .z5mn 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 combinwpci0;m q d17fation 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*wqj)lpyl -09nl a7ke 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 paralleq:r j,9j3nzvaxs)5rkrcn n8) l 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 flows20se*v6x:kjzrnmf ) z into 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 appliances20 i ;c rdzd7coecn2t1 are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what to ;2 doie1cc7dn20t czrtal 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 7 jglp-g)) mzps7uz h3can connect in parallel in a 120-V circuit without tz-pg) zushjl7m 3)7 pgripping 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 2.0ekj +a *f4/6noo lp7iv $\Omega$ 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 3eum lo)d5t,rp7fy t8, 0 $\Omega$ 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 b 5mp0iz w(lh3ea3bqhzm;q.5ao +.r w, 6.0, 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 9.0 1t 9n ub+7tmzt$\Omega$ 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 5.0nqvly-ekg y93(8o/m 9wgk0 fg 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 9.07u g4hkpj2 sv; $\Omega$ 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 : r+ivc lhy7f9of 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 through , /gum cuksr1-aj)5 di$R_2$, 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 circut9 ,f2( fznu:aj8nguj it 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 th 6c m0;j k50s-efwyybre 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 F33brv0,e4;p5c qeobz1 m mukx ig. 19-4, 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 current in the 4 txkqqr/ l-0 (e$\Omega$ 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. 1tdit:(e 7gt83bhx d /z9-5?


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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 ju9( t*eshi) *:n9 urgyso fi1B 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 inxow7n x)j/o(g-owai( 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 the battery in zme)vp zyp d5-6n-gth* +rxc1Fig. 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 poinn6h xs ,ey,pbg /-h*lpt 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 the 7:wh5 1yrop1; ,cwfvda y-:pzw $\Omega$ 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 to 7n p-:(9jgpbgtr+a zhe 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 4d:pq2hn8pn1+g2plk c y jr 4(a $\Omega$ 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 (f .to 9bfa2ezthe 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 it vff 87(q(rqxwx- 1ayn the 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 thnb :so,3hcf53lhg x1re upper left and lower left cornershsbnhx313ofl cr g,5 :?

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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 m.k1 7ksvj;vun b5h s0are connected in series. The equivalent capacitance of this com;hssku vv0 b.jk715mnbination 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 across a 1.7v 3i* -ba ,0rkqikrtycjhx.2.0-V battery. How much charge is iv.xqb- ihk3c*ry7t k.jra ,0stored 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 5d); oug59* uxw :lvslu0.0 mF capacitors are connected in series across a 12.0-V battery. What is the poduvg x)uul l*:o; 95swtential 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 connectlti*.3.q) xyco spae.ed in series across a 3.0-V battery. What is the voltage across the 1.0-mF capacitor?l*c.oset.3qp y.x i)a

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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 caps)+v5jr: 4sh wb9izz pacitor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF ci:4zs9jhrv w )bp5z +sapacitor?

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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 capac ;qthm;f+tw +ir(sw 07qeed x8itors are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacfh8eqd0t ;tqe7(rw; w+ +xsim itors 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 u ms73,m (rfweconnected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent s e,(3umr mfw7capacitance 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 :;: h5/ i0cf)tyg 8rn ersptttmF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and g;tst5:/: fr )cpt0y it8ernha 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 parallel. kw 6(n 5ksz)6mip.m vm The combination is then connected in series with a 12.0-V battery andm6n.5 mk(kp 6 smivzw) 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 cohdexfgk ky i:1b/p6h 94e, r3cx1f4c qnnected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voldfh c43xykx 4c1 h,r gbei:e f61p9/qktage 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 a by6 x6tm jb 1dsu6sq7350 $k\Omega$ 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 qu2z/zc8v ( rnf)di/l-b.sb fthen 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 conneck3bb +to. b1cwq--bik/t cu8dted in series with a 0.50-mF capacitor. The capacitor is i t 3-ucbkki-1 ob8tbwb+cq ./dnitially 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 chamcatw dg8boh-8*030f7trg mj rged to 6.0-V. It is then connected in series with a 3.0 g08wf7* 8t-rgdmbc03 h ao mjt$M\Omega$ 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 ar: x51 6h,a4ng rxugvan internal 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 rensmwpy 7,t1u dp06m1h sistance 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 resista :btyl( qc 4itk(h4:ohtk(/kince of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer with a coil resistance of 40.0 msx.mq guxp7+d(2o l 1$\Omega$ 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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