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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 battzj8z3pr2s41hj odn 0mery, when no current flows to an external circ j2od8n j1m hs43rzp0zuit, 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 bat:pt90m 48)hupet**: qxp;j:mpp iht p)sxedttery, when current flows to an external circuit, isheepup : t8*4 t );mpx9tipp* mdq)th:0jx s:p 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 connected in series to a battez ( zb:2h ep(yu eycjvvy,+m2(ry

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are conpq7i fais -7et 0var0-nected 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 uedcz 3/uqe1(series to a battery. If the current of 12 A flows from the battery, how much current flows through any o cuqeze(1du3/ne 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 resistorsmgz+ kn hpw6v nwk;1r40o *im. are connected in series to a 12-V battery. What is the voltage across any one of the resistors?4gon p+*i0n 6;zwm.1rh v wkmk

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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)6f z2on8q s/xzwkj 74s vy3nq9pkec0ant voltage source, the power supplied by e0j7q8n2zoywp3v )f zn6s/4c k9xskqthe 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 connm3*p) * qqzfw m)tbts z,d--ljected in parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parlj( zi0kjqx 90allel, 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 parallel to aeh3g4zvan4 /e p 9rq89 vlx+sj 12-V battery. What is the voltage of any one of thv ze98nvr +4 h sxlaq9g/jp43ee 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 connected in parallel to a battery. ac k ;:uda )w7(f7seqgIf the current of 12 A flows from the battery, how much current flows through any one ofac:fw; seq 7d)akug(7 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 ligzy h/pel (/ cxo19ihsx+bi 2ag306bz phts are connected in parallel. What happens if one lamp burns out? (Assume +(32a/p/ il z9x 0hex1 czy6ipsgbh obnegligible 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 parallel to a coe( d1z7ji49ps(aw whk nstant voltage source, the power s(ei4(d7shpwk 9j 1w zaupplied 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 ou zkk; nc3a74mf resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is czk 74mknau3;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 ju6xgz3vwgj+5plf3 a+( -a ekq enction 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 locpn2 mph:6y5gy ota//op 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 e)espi qt+7we 7xample 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 examplku2jdhm2u *f( e 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 n a v/8.fgo7xfvalid 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 batteries together in serihhga .lodi6-/pa1(6o g/j v fies ("+" to "-" to "+" to "-"), and place them in a circuit, the combination will provideaj 6(d.va6if/o g/oi - hpghl1

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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 b14 r)g igja0cqatteries together in series ("+" to "-" to ig j04a1rc g)q"-" 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 together in parallel, and42u, m-m-ezcy u/qwu e place them in a circuit, the combination wi4 u2 cmey/euw-,-m zqull 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 connes /mpvb//r5 vmcjyn*bmuk-bw7:dw 6- cted 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 capac2d evvp99m /ohitance of the combination increases9hvpm/2e od9v.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitsa5rfog12 v1 hz sgk;7ors are connected in series to a battery. If a total charge of Q flows from the batte7 o1;s2g fs5k gzh1vrary, how much 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 capaci1yf1rj2nb8t f0vh,)) l mb pqube t9v6tors 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 are connected infhsy) u:h. o1z yie(o/ parallel, the equivalent capacitance of h s1 (ou/eho iyz.y):fthe 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 paralleln 7 he(+9bx;)jbj s:biordpr 6 to a battery. If a total charge of Q flows from the battery, how);+jb7j pbrs (n i hdo6bx9r:e 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 Rbyp sd1 n)s 4nr,-vi:yC?

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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 serezf1o:qidp l6z0sd 2( dq:w) x0n n9hlies to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acrd:fx1n d z:wle2s qoq6iz09n(l)h 0dposs 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 ideal battery of cofe4jqqy4yd d pl:u*8*q 3ow b:nstant terminal voltage. At the moment contact is made with the battery, :4pudyw eq:83yql4qj b*d*of 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 idealpbzi(pvlr9mwh c1+-; battery of constant terminal voltage. Whh1 pc;pm 9vi-wz(rl b+en 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 shoulcwprw,ud(xw sahue:4gj ;z j y875(i3d

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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 85--bnj5yi sc; kjohdt;( ocy 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 placing an ammeter in a circuit consis x0udn3ta( nks.nqubj sf0.8(ting of one resistor and one battery. nfn. q xd0b3aut 8sjk ((ns.0uAs 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 mbk a+;xx 8asj*m4f6qan 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 ag:nya:s6;buo galvanometer, one normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance o q*jp(tib 8r6jf 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 plax* 3: 0wububzd,z:v sicing a voltmeter across a resistor. What happens to the total curr vuu*dwi,s3zbb:x 0 :zent flowing in the circuit as a result of this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, and a voltmeter pxud */nwcy* +cf,,urdro6 0p is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one cucwr0,r* pdfu 6n,oy+*/px d 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 with an ammeter, and a voltmeenfb ka 6s9m s4fs8896c .2he/oelrqvter is placed in parallel across the resistor only. 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, tfks.9vh o6/f 2q m89rec6laeb48ens she 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, and 4.097 cm wc 2mb4rq g(ul2iq2db/v $\Omega$ 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 1: ir:p/c wj:)8v bh txub,rihf/86zwc2, 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, anw2kg.mwf; n*bc1jbj; p; 0 :u+bg pxpod 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 combhxq f .;d0kc e,y: w/r:s hecikl7j*,gination 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 4ndop(gym /lqx* ley*-: k hg-series combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination of 4 , *p-*lmpyq zffgm1rv29bzi 2.0 $\Omega$, 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 paralle8m2r)sux ;quv*sbaz,x zd2uw: 8rn dzg(9c.pl 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 a parallel combination l 4npq-q :h f1:7/ayyrpkw pb lr6:gx0of 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 contg8k() na vg-cw3d +canected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all werewc-vc 8t+3(g aa)d ngk 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 100-84 ot 3 .9msep5h n1ugyfyd 4.bbwpy0lW light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A circuit breakb9 03lepo4 ndy..8ufhs ygw y5 4pbm1ter?

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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 8zwrup db v i(;,ne0a*$\Omega$ 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 andj pvr:1c7n67 ox0oz lji ) ehmrvp,8f1 30 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, and 10. iz7e (o,sh0tcb4gx ;s0 $\Omega$ 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 5.0qi/. 3s9w yap6mg8j iq 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 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 anm9*lj2o h/b s2+u)o* 2 miqyc :wbrlibd 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 9.0 vqe n4a6tb )a;$\Omega$ 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 circuit in Fig.ol:zrysv+ 3 *x 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 throughw,1+j qxko 4jd $R_2$, 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 resgy-+l 4yb7 rcfqfz2gw2z m8i4istance of the 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 tbu1ib,i; m.hwjz mj ;8he 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 blujp*ypp 4uref / 0:5the 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 m-9:w+hcxlkz 38wb rl efnu8- $\Omega$ 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-p(:bd ygve17:ceo *qsh0u sf-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 B relative to point C in Fig. 19* -brs enke2 m 4(94dzsbem0nj-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point D relative to point C in Fig. )q1kyl.iru3h 6jo6ot19-5?


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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. p5eeznl )irx 5gl(9 9itk0,ou19-5?


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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 point B intp2lp64s/ce kjy0v-z y hv dq )+tn,y2 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.bb h- 86bip*rzte3 eg in 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 iw fbx(6k)n+)a)*zxpwfve(ib5sa rn 3n 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 md6z79emcmc5b ru7) kde 7q5bzj0ua. 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 12 -bx ,d.kw+g3mkm u1ct $\Omega$ 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 theb p2; k1,3-pil5pkgdxdz +qai 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 and lower lef yzxo)892qx9/e+q2qupr km fct cornerp92emoxfq2)ycuzx+ 9 /k r q8qs?

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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 equivalent6 na3o g4lxsul)zb l33 capacitance of this combinaa336 llxgo4bsz) 3 unltion 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 cap;qk6g an9z 6j+bha-pe:9d ili acitors are connected in series across a 12.0-V battery. How much charge is stored 96:bandi-h+9jgz i 6p k;eq alin 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 f1 nk qog5rp1+50.0 mF capacitors are connected in series across a 12.0-V battery. What is the potential difference across the 10.0-mF capacir 1o51 qpng+kftor?

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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 3n,30z uz (3lp qhof6gptn-m(t.0-V battery. What is the voltagmnlfh pq-6 po 0n33t,(tz(ugze across the 1.0-mF capacitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitoipr/1*r 4bz:v sh4 caor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF cap41robih/s czv r*pa:4acitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors are connected in paranso4ho499 1 *k zlsrc iy obx8(s.rr3bllel across a 24-V battery. How much energy is sto.o bh34yrrxos on (8cbs4*s ikr19lz9red 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 rbu*t; lbq 0j t,o8:ccpair is then connected in series with a 30-mF capacitor. What is the equivalent capacitancecjt*;o 8:b lc,t rqu0b 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 cocw*lu 6:d10 lwoxp9eokt-qp8o;fh-f mbination is then connected in series with a 12.0-V battery and a 14.0-:ol;-* 8pouqwlhtcfxkd9o0 1 f 6 -pwemF 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.x*xe1kqv3;4 ez)ymg2 wgjx x4 00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitojgx)3;xm1* gx4exev2z yq kw4 r. 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 6.0sps7 3 *4w ljsvqnp6/k0 mF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.sl qj kwn4p73s/vp* s60-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 chal0n(0 pmvubz inp:.t :rged 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 to 12 V and then discharged thro(mpw(ak(i)n*e:bn9 a; nl( th q0jyvough 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 0g,4,94l- nr(slmqrg ndgxwl7 .50-mF capacitor. The capacitor is initially uncharged. The RC 97m,l s4wg n r4xdn,grllqg-( 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 the mied03t )j/wvn connected in series with a 3.0 we)/j0mi 3dtv $M\Omega$ 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 1wzr0bp+ ie99 x00 $\Omega$ 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 ac skx3 jwz71a)n+u-nith 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 resistanc40 t+f qlx7chj9u1q btbg a9-ce 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 d;d9s yq .zd sqza5.a5zkad* cq 3:,zh5qjr6d $\Omega$ 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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  • :
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    总分:102分 及格:61.2分 时间:不限时
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