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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 terminali3d/iuj z+l)dl, /kk zs of a battery, when no current flows to an externa3 kudd ljki,i)z/l +/zl circuit, 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, when current ujqbd b2r 4s :nx31ta/flows to an external circuit, is referre unxa3:jd12qts/4r bbd to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in series to a batj so, ag c: zuddelf:h ao4+1i/k44bh:tery

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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 se sk4 s;y3n,zhxx* w98nmynrq, ries,

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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 sdmvo9c qt :2q,aa/n6 reries to a battery. If the current of 12 A flows from the battery, how much current flows through any one ,2r /oq9d:ac t av6qnmof 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 bam; z7k wghx2,2u* tmqr*jit+ mttery. What is the voltage across any one of the resistm t 2h7;kzumjqimg *t+2,wrx *ors?

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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 a ;d :6/4ypepy+rn7v.rt3 gdcxa,mzfu dded in series to a constant voltage source, the power supplig,t3 f.pr+7x;ypemard dn4v/ u 6c:z yed 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 connecte1ct 4suk atch-v(/qxl)1ulj. d 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 qrozs+ :s* n pvsb2i-3a0d j(bv;hys/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 connecrnehm.0o cm4)1 o gv7:ry)cdvted in parallel to a 12-V battery. What is the voltage of any one of the resist7:mr)vm 0)nyd 4ogco1r.h v ecors?

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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 parallel to dvpyso8)9 )8fg 2dbc +2cr tbsa battery. If the current of 12 A flows from the battery, how much current +vc sd 8f2))2ogs dbtbry9p8 cflows 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 parallel. 7;1:);zz+ 6bwswxot )g xgp9wtbubal What hawwpt )g;1s6:bztol wzx7 bxab)9 u;+ gppens if one lamp burns 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 ar :-ybc3gmgep*la1uo; f 4ln.us8t3hde added in parallel to a constant voltage source, the power supplied by th*dlhubm1s;t:e-u g 4a. o n83yc 3plgfe 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 r8i0k;y zku1b-dmoo5yesistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connecte0oko58d1 y-kym;uz b id 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 r yiv f/+z(0 eyb (h3ja3dhgrdq. )c4jb v8e3ocule.
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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 rule5hx tl:s.g) qwl+,mrz .
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rul 9aejsf8poi,2 e 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 examplec83ub s*p1 qrv 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 g3r :ef- g)olgvalid 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 identic;bgltqrp/ 22eu5t *r ral storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the comb tblp* ;r5tq2/uerrg2ination 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 storage4ha hqj4,7ty x batteries together in series ("+" to "-" to "-" to "+"), and x,q47hj 4h aytplace 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 sto: s6mx+lchwufy 19 ah1sy:h0 /ys fwe3rage batteries together in parallel, and place them in y 1sfa6e: my f sl3h+ux/hw0hs91w:c ya 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 aretvs:w x1)t c8y2;2ewxbe -sey 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 equiv9)nc.b a(glx n*tvoo :b2bru5 alent capacitance of the combination incr(lxb t )na*.ovbc25 b ognru:9eases.

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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 batter-.r lep3 -akxcy. If a total charge of Q flows from the battery, how much charge3rc laex- .-pk 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 pamxaitv9 2 *kqwzu- d46rallel 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 equivalenppk ac6e aa:56/ki8 yyt capacitance oa5k6a cyeyk6 p/a:8ipf 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 0j0/ yh vuzv+hwfgu-4 are connected in parallel to a battery. If a total charge of Q flows from the battery, how muc-gvu uyhz4w+0v0 hfj/h 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 th8ii*q k(tu6m:/l e0vcgtaf7ne 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 connecte7k3+c d5zz*gt7pharn d in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage 5nrc7 7 zp*k 3adt+hzgacross 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 an id .2l(5akiwsz peal battery of constant terminal voltage. At the moment contact is madi(lw.k5 a2psze 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 battery of constawp)u;lyn4lswkt-53, m5nev j 1 :inpd nt terminal voltage. When this system reaches its steady-state, the voltage across the res5n, l ntw ky-;5d1imnjsvl:p4 ) w3peuistor 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 shouldkr,af h/l7+ *ybwskyzx ;(oaj9r(m,e

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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 ammeteea ac icyjz2x/m4ka,hktl)9i 1)-8yrr 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 obtapf:3s.bebu /dwin, a7m +w r7xined by properly placing an ammeter in a circuit consisting of one rr.npwew 7i3, sf+bmu xad 7/b: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 sh76k uld:g sy*munt 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,nfd(no-qvvtk58s;-/yb ba 1c 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 resistac(dv*a mmw,snq 5 m8: uc5kvd+nce of a 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 resistor. Whatmal o8i x7j/ irgu81b-e.u*jt happens to the total current flowing in the circuit as a result of this action?1mx/. *l 88jreagtuo 7iji-bu

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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 vollhtk6z+nc w;m3woszjr8cp. a21d-3dtmeter is placed in parallel across both the resistor and the ammeter. lod k;m3r8wd pz6n a2c.hzj-+s 13ctwThis network is then placed across 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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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series wi:(+fevmq (m qeth an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battere+:m qeq ((vfmy. 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, 3.0, 5 ct7oy*) mgpr qfdt h+/p:pt)0.0, 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 6.4 aws+s3 mx+xn0 $\Omega$ 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 6 x pei5)8mp-iw.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 llfsfz: ; v/n.u5w2,pw9nbbbcombination 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 serie5si 5tbbidva*6p6vw (s 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 oftdwes5,- 0 crb 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination of a q:xtg4/90ms x tq5mwx 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 a parallel combination of a 4.0llf(9kl :uw6+iyqa v9qujj 51 $\Omega$, 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 appliancevib1q 5tcz q264w96 a8 7xesvg qv4xahs 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 total curren9 2saz687 b4qqtixxe45avqgwhc 1v 6v t 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 liqst y)2nw)a c:ght bulbs you can connect in parallel in a 120-V circntq:wc ya) s2)uit 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 2.06y yebkvnuxwi(r.(,m 9,vm.j $\Omega$ 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 31 wvd+)uhr1n-,(rdbx b mdmda+ 8in-k0 $\Omega$ 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, 6.0,8tye,j ,vc+yl0 4ituxf )i: sp2* obbp 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 uq ),bqb ,tw2e9.0 $\Omega$ 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 and 9.0 x,v ck3a2352ce yndgy$\Omega$ 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 km3.8gc le9g*an 9ktyand 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 tq0itxu f)v(; lhe 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 throuu:9ixaa 001nmmqlq( 3i/z waa gh $R_2$, 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 ts7yh,jw6b 3 k(fydla;he 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, detergzq. (i7b +dj3 y:tvxmmine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4 yr,q.3g64fuujn8rto*z1q -e vax *cc, 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 45rwgj tza)f )1 $\Omega$ 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 relata8s e;i7pyyg *ive to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point Biz-ph x1bxl ),4jc,oo blm-c6 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 po1ba9 w e9 3qyw0y *i:3oyglilfint 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-(ew ,eke waq815?


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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 point B in Fig. zt7;o4e4x:sxrgy( h k6c s9et 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 thuxet1jb(aooz t:a2 1glp7,vg /z4)kwe 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 n7uos p+15t x6xw k:nbin 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 in)*f4m qc ktb9n 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 thcvi4+m- scs+b3ml 4 tee 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.z-hy:o ,mzhe 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 connecti;ofpyx +e3;kftp 9c scf-k8f4ng the upper left and lower left corners3;8ok+s k;cp 9f yftp4fx e-fc?

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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 nmzy *)owtq7l /nd;hll+0tr4series. The equivalent capacitance of this combination i;h+l 0 no)dwl*rtnl/ 4qtzm7y s

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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 149 kipzl w9ktch3ekhqnqcr3 p9;rgq7,,p j+62.0-V battery. How much charge is stored in the 5.00-mF capacitor?,9 j37r qhi96clgzk p;ecw kpq9t+ pn3,h4krq

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series across+ 5 b4lbmhl2z5y*ko kyqkh: g0 a 12.0-V battery. What o qmbh l5*kh+l42 bkykg0z5:y is the potential 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 b5f 5efv jsl p14)bj2aeattery. What is the voltage across the 1.5jv)4ef pj a1f5sel2b 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 acedtf6cl(- k ypxfh x-p.c49g)ross a 3.0-V battery. What is the volg-46( yp9fdck).el -x tfcxhptage 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 conne 2r/fzzm mt*b3cted in parallel across a 24-V battery. How much energy is stored in this combination when the capacitot*f2 bmzrm/ z3rs 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 p0l-o:d 1vaf zvarallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitv:zalof d0- 1vance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. The combinatiqig;)po-7v ldon is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the7q)o-v ;ldg ip 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 8.00u/+ itg5ajk*os)ol f; f4.s( (rquey f mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF y+4lo eg) *rtuo(kfsfu5/j sq;i (.facapacitor. 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 mj p;0 qe5l 8x3uen07tmdgltyo7)m)xyF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-)0e0y) qj;5mt3t xgxd8y7 llne7mpouV 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 a 8i kt,gl/n4no 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 charge9rtzzj6dk i0;d 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 capacitormj96 7cawwh6 xa)y4sz7cxa. d. The capacitor is initially uncharged. The RC comba .67a4wsx7mc zc)wy9x 6ah djination 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 charge tx26 ga/ah byhqb+ *:8dnmci6d to 6.0-V. It is then connected in series with a 3. hiqxc8ba6/ a: bg nym+d6h2t*0 $M\Omega$ 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 q0w02 bbtj. qzresistance 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 resistance of 2fw;w7s6 :vx ag0sonq6 h 9hjp+4.0 $\Omega$. 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 intern-tw3wety g5/n0 v 4mqval 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 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 coip637 )tnlg jhbuppqq* 3 cs8,gl resistance 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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