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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 termin;)cmo qxdbf+- /9wmmn)2m zzyals of a battery, when no current flows to an external circuit, is referred to as th -o;m/dmfq9myn) m cbxw)+2zze

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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 tl y*4/t2e)h9bu et:5ifjtrr uhe terminals of a battery, when current flows to an externb)4uh je/y59*trrtf l t2:eiual circuit, 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+.,wp yid;tdj.n ss6z 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 sex az l68j)( /a2autgxeries,

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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. jh-ee8: x8bfps+)hlyIf the current of 12 A flows from the battery, how much current flows through anybp : l)e-8yhfhjsex8 + 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 battery. Whko43ob iu)m )sat is the voltage across any one of tbsui) 4mo)3k ohe 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 cons.,sj84y,fl aqyc xma:tant voltage source, the power supplied by the soury:,l8sxc 4q f. aajym,ce

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in parallel to a battery,rh.3,+wk feop

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are c;avv0)du4bbd :p k vs(mj+8jmonnected 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 resistozf/ b)wp1 j+surs are connected in parallel to a 12-V battery. What is the voltage of any one )j+pf1zb/ uwsof the resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connectepp-+bag/ k k/qhk.fh 6d in parallel to a battery. If the current of 12 A flows from the battery, how much curg.f6kka-p hh qbp/+k /rent 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 connectea,jj/o8l)zohqsmf :/d in parallel. What happens if one lamp burns out? (Assume negligible resistance in the w/f 8lj/q)h amzo: s,ojires 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 a constant voltageow ehax4x o8dn-0dli .9fzl62 source, the power se6idx 04ooxnzd a-2hlw89.l fupplied 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 identicwe:vv s xo2ys8odm -:1al resistors, 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 netw2x1dmvsv 8o:e:w- osyork 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 ruli),v+zq tzhgeaw sbv/6tdo3(.g y s09e.
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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 ru auz6g7ze 2iz*le.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop ruleyk(v f4md w44q is an 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 junction rule is an-*rbs-y-xff; sbp 4dih 0u5w h 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 circuitr2*ry- xiles7w7)ej u 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 toget *ufu)yf2yd; :)l9i ijvz6 zajher in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combinvz2uzdu 6:f *ljia)iyjy9;)fation 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 ident(kkz7d.rzs f :ical storage batteries together in series ("+" to "-" to .kfz:(7r k dsz"-" to "+"), and 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 tojld86: 68b59pd qnvmj9oy pyt:lw x9jgether in parallel, and place them in a circuit,y to:wlp5 jnj9d9d9 q:vm86ypx l8jb6 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 capacito-v9kvm eg:( +jaz.ak jrs 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 equivalent capacitance ow9hmohc9 z11h6e j 5yof the combinatiojm1 z5 y9h6o he1c9whon increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in series to a battery. sz8ssr v/ xx01 If a total charge of Q flows from the battery, how much char1xs/08r vx sszge 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 par8b 6v yiut- ( /d-ex1peq8aokballel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel, the eq9s)n(wu -mf xvuivalent capacitance of the combination increnfx)m-uv9 (swases.

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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 parallaxz1 sjnq:78 rel to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor nzq ajs7: r18xcarry?

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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 forgpu1o)5 ee :zzhr4 nn,(elni; 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 gfj h-qhg 3d ./fwr7yxt :d 3r)bxf28uayp 3.san ideal battery of constant terminal voltage. At the moment contact is made with the battery, t-f3dyhg rf)x2ghf t.ap7: u sd33/qyxjwb.8rhe 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 capacik p7qhakdp, *(8huxjcb3 .ff0 tor are connected in series to an ideal battery of constant termiq, kpfdjx(.3h 0hpafb *kuc87nal 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 series to an ideal bat30eijdn/mw5 yg6 o4a qtery of constantay iwmjg4/0d56n3o eq terminal voltage. When this system reaches its steady-state, the voltage across the resistor is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shoul5pydv i 68mdi :gdw/2fd

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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 biv xvih 9l h4,u9;ph6ny 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 obtai k ,crxy/;t1jdned by properly placing an ammeter in a circuit consisting of one resistor and o;xtcdyr,k /j1 ne 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 sh6+8 akn4cddela( vpnv 2z)-0it,gkh funt 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, one norzs1yqqh 967 rbmally 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 aba 5/ckgi4lu6 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 voltmeter across a p8bum cmur-; zivwqe31z1z j6t1+j c6 resistor. What happens to the total current flowing in the circuit as a rezj+; 1 c u1eb prz8t66wimz3u v1-qjcmsult 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 if 1b pesa0 *n4ud5 )iykau,nejp 48se3s 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 tn508y3 epjae*nk , dfs4upi)4 su1aebhe 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 isy i6+ win3qkcd2 (u;pg placed in parallel across the resistor only. gp nd2w6iuq;c3k+yi( 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,dea;,om j7m qbcri(+: 3.0, 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 1w3w1w./d bdaq5 puu6*lnuc6o 2, 12, and 6.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and /m75re)h8k vxp1n puf6.0 $\Omega$ 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 in;d4il fqv; ibct./vbgsqfjz2 7r)0 e4to a series combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows);qp ixks;g f; into 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 kw7-5sz+ vbtyb9 k,-j ljrh8iparallel 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 paralle wp1lynkeqd3zz u 6wha1;;.-yl combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into ar--rua 1r0o(uc rkt ;yc.zy5zhh-9j q 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 appliancesu9:k 2qp(n y e xtqz6.rp7s2epf2 :qqy are connected to a 120-V circuit: 1200-W toaster, 650-W cof7 n(f2qy62ru:ykzq :tq sx2pep pqe9.fee pot, 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 bulbs1oz8o-ck wv i20 mt2 h29c:sx6nptfeu you can connect in parallel in a 120-V cirpv1o 02z:e6mwh i9oscknt2x-cftu82 cuit 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 2.0n*cojmhzvs93u7 /v/ du(6g v c $\Omega$ 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 3pu; z 7zea m+7qkw4(i53 2hjp(btdwrr0 $\Omega$ 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, 64 z8d a3gw:iwh.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 av 4 aeh5 mr.v8ohrb,5hnd 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 4.0 $\Omega$ resistor?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 +0bhc :p hq*-ax+ opirxym haeb)1./hand 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 5.0c: gzr6,tc/kkcn n59o 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 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 circuc wtq)91ak y0r jb v;plo1+y4jit 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 throughp9 3 a;cn d*hqnn/h6(ctmvvha62nj;n $R_2$, 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 in Fij*5vyx8(h yfq,ra;rcl 8kcco4k l +w(g. 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 thet r hr2v,)u)xasj 0z.tu0ma2f 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 current in the 3 6)zwcdm3iz-yg +igu 5 $\Omega$ 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 them+ 2vnqlus/iu: i1fy+ lb5s1p 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 ilzsrqwtu 5n,:4o i*v2n 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 pvkeu6 dv3ad9c6)9u9s fylnw.oint 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 point30r*rn ajz1it 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 the battery in Fig. 19-52sm:bt5ez1*vb odlm yd*m v dnt6*o+ atl)r0 -?


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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 poi bxg7c :2tn1gqnt 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 yqt8n bfy(m+i*bxa6rj)nz7 :$\Omega$ 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 the:5vw b,r 5k -k1pxn*.ltijt4w -ezpve 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 curren2yd510l4: ir6zynf hx ,zs bjut in 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 1bbn74bq ft)g-vt( 47h dhe)xt2 $\Omega$ 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 187b(gvpsim:dj,6 dm+n;ffuw ( $\Omega$ 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 thzfp/wit-4 v99jf(s fhe upper left and lower left co9hpviwj (-sfz f tf9/4rners?

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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 gvt+8ld 2l.h hcapacitance of thi h.d+2lhtg8 vls 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 capacitors are con) 0y/**o*iiloihazp q ohgh4s- y3 e-onected in series across a 12.0-V battery. How much charge is stored in the 5.00-mF ci*yho-phoe g43 s* )zq /-hoil0io*yaapacitor?

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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+lyfiri 5qvpyz-03i* f-mb0 e 50.0 mF capacitors are connected in series across a 12.0-V battery. What is the potential difference across the 10.0-mF qie 0+ym-- bvpzfifyl0ir5* 3 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 ud2vkk vopss c2w..yeb/,4l3 across a 3.0-V battery. What is the voltage ac w /b2yvslu2 .vces43o.dk k,pross 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 are connected in series across a 3.0-V battery. h fuiq*q t06 eytvb;do6ko/+1 What is the voltage across the 2.0-mF capacitor?f qk/6 vode0hoq +b t;*uiy61t

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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 ww2od: vnt ik*r-n,o0in parallel across a 24-V batte,:w0dnk wv i2o*nort-ry. How much energy is stored in this combination when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, and this pair is tfr08pxxr ja)/ hn s5 y,xd/oc6hen connecr5xrxd,0xa) sf y n8pjh/c/ 6oted in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6. zs 30oo g ll)v9i27aejadb5e;00 mF and 8.00 mF are connected in parallel. The combination is then connected in se )v9oaiegl3j2 b 0lazo57 s;deries with 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 connected in parw 9akcij* z(:xallel. The combination is thcxaki*9zj(w : en connected in series with a 12.0-V battery 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 conne:p7+ofg0 / wcyvue /gucted in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the 0+vy7/ ogu/fwu:epg c 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 charglg2 i jcq3l; : 34/ynkzwuxh.ted 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 tov eku im47 y-t8q*cx4 tlk5u.h 12 V and then discharged through a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a 0.50-mF capacitor. The ca * c);idbj(giapacitodbc*i )ja;gi( r is initially 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 connected in ele a39ned iq2nbxu6)-/+h ovseries with a 3.0 x/on -+evq2)a 3ud9h eienl 6b$M\Omega$ 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 resistance of 100peuj+4 dt2.cls a,9rh $\Omega$ 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 rfodpp , u58h c: 9fs*kx*oqc:mesistance 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 re-hq b+gh +pym6+6qwnt41 vpvu aq,ci3sistance 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 resistanceothbq x ikx) 8j o4-ny9u egn+6;tm,1y of 40.0 $\Omega$ deflects full scale for a current of 2.0 mA. What series resistance should be used with this galvanometer in order to construct a voltmeter that deflects full scale for 50 V?

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