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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 terminals of a battery, when no current flo 6 mmkjn:qt5tr-j)cddpgp.*5d6* xnqws to p)j: q-rk5nc6x gdm* pdnjtq5 *t.6dm an external 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 termxu,ymb0f6wuz ;x 6bs64ke* r xinals of a battery, when current flows to an external cif rxxmw6,;0yz66xu e *ksub4 brcuit, 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 connected in ser3w . 6ucr +)sjold(ncries 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 se fngh,b s2gtj8gip ,n;)2g4m0szn gy :ries,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistorse( uyo3lhrk56 c )cyb( are connected in series to a battery. If the current of 12 A flows from the battery, how much current flowsy56r(l3cou(c )ybe hk 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 a 12-x4 (enm,naokkv8(b(z s*k6dtV battery. What is the voltage across any one of the resis(6bd,4xkov e*k atznsk n((m 8tors?

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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 aqov,2zt 9vmo + constant voltage source, the power supplied by the sourcomv ,z+q9t2 voe

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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 resistam 5k7*x4a nybors 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 chup+if s)m wr/o:u(l 4onnected 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 paralaly:l)u vd:1 ;df 93u frvojk.lel to a 12-V battery. What is the voltage of any one of the resisd 3uvlu.j;d9:)fvo kl 1yr :aftors?

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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 co durq:h hmbr.;kug.88nnected in parallel to a battery. If the current of 12 A flows from the battery, how much curr .;.drumr:8 uhgbkhq8ent 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 connected inda py1w,z-s0 sh0mnk(tw:7s1cxl/ oj parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the lamps.)xl1s y,:c1w 0 zs0s(map /hwd-j tkno7

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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 voltage source, theyj ;lsnp ih5wll41 nnsvr,+c +ml3ax+f, wo; / power supplied by the sourcec,nv,;lj3liyhaln4+nw +;r o lw 1f+s pxms5/

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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 resistance R. The maximum py4o5xo xg4 268at5zpmr ;,zd og2gzpoower each can dissipate is P. Two of the resistors are connected in series, and a third is connect5zo648pz42a,oxxzt gdop ;y2gg5 rm oed 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 v h*bw6q4 j +ye71uquz6nou8rion 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 loop rule bs9l:b27g wlc.
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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 4x cif(68,hv a5b;hod +,g:lutptueg 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 example of9m71tg l7cg b yvoy2b1

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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 here6x;1v ipbosx+ 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 batteries together in series ("+" u.ivw;vb3e8 b+-gubq to "-" to "+" to bv iewbg8+q uu ;v-.b3"-"), and place them in a circuit, 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 idecyd1j4bl q .4kxgb 73zntical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuxb dz3c qj.l7bkg 4y14it, 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 identicamgb z8t)zp;1: u9f pkdl storage batteries together in parallel, and place thzu9g dp ;bz)81fm:pk tem in a circuit, the combination will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in series to a bakx-7q3pslx,0b l5nr3pj sq- o -mf8omttery,

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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 capacit ny -/p)59e95fca qmipby +bvhors are connected in series, the equivalent capacitance of the combination increasesv 9p)icfa n 5m+q5h9y/p-bbye .

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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 yn8elx s0d;eh;k p5d1series to a battery. If a total charge of Q flows from the battery, ho; ;x1y ph5ede8dlk0nsw 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 capacitors are connected in park ndi jhgm* j fsy:-/ck8eq55-allel 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 capaci- dm;j/ssb/dzh +7s mptors are connected in parallel, the equivalent capacitance of the combination i7pdsb+ dsj- ms/hz;/mncreases.

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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 a battery. If a2do+z hy xdn/y6/) nxz total chn)n+d26xx y z/zdyo/harge of Q flows from the 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 quv*za-o7v0 0x. c (y7 uewsdunmantity 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 serieg*wba;n6kz c5h7 hg s7s to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the capacit7g*5;k6 ahwg7zhcbsn or 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 t 6qjd/hdf o 3d,pws5(7cue-oare connected in series to an ideal battery of constant terminal voltage. At the moment contact is q3o w(d6ud5 -cs7dh /ptef,oj 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 arh1cvuq -i9t l:dip: )ne connected in series to an ideal battery of constant termini1): :vh cnuqi 9ptld-al 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 shoucbh-d54jxy+ag tnxsc:i 8- *qld

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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 byr l:qi8k0q4ksld.n 8rh 2c7gy 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 obtaine/55)ft+ xacw8mpbr 9bx d xg+ed by properly placing an ammeter in a circuit consisting of one resistor and one battery. As a result gxte 5xb9c+5 a/mbrdwx)f p8+,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance ofmq2 vh2x54j3 ogsalm0 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, one-tgtf1 z6hqqy )2zc :n 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 resistanceeb8.(eif3jh0g h 1qese6)k pz

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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 :e cgb.mm4n.8aig//j 0 dgjolacross a resistor. What happens to the total current flowing in the circuit as a resul j 0m8oeja:mni lb//4.ggd.g ct 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 ammeternrr0o6-u3 mphj:6m em , and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then r 6um0jnor :mp3m e-h6placed 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 with ie-5q wx4(ghaan ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then c gqh-(e4awi x5onnected 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, 322 h,i ,ugejuvf3: 6qud wrx4x7 vva5a.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 12, 12, and 6) vmpyzo0r 54pd6c:o :jrt x1h.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 7 ox ;g zsp/znxq+c,c)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 combinati(w,4)x0fnossdgv qm * on 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 h/fkii sgphs8::g)) w 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 parallvdxi 5cihcc. 9.vkqlood)mj ya 872 xt(n6-+sel 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 paryz ve1ujhz/ssp3ea50ncf -,2 allel 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 flowsz8xu r ,71rqm5m/ py o7 xfxv8m;qjd(t 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 appliances are *nbe2myl ; w j(0.ndnk1/up i i.bviw1connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 6nbe.n( uyi j*v;ww1dpm0l2ni/k1 b. i00-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 bu5od7 -c/ e d:rbdzuxv.lbs you can connect in parallel in a 120-V circuit without trippiz7.vedoc5 x-rd: b/u dng 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 2.0 b x 1rlh/:tkemv)u)qhw)/r k*r1 v-wx$\Omega$ 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 30 *sln9oz: om9qpn4 f)f$\Omega$ 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,/nbh :02kwqb y4dz,:iigk q3j 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-ifxygo378/v+ mt4 k uig)i 9gwsbeq1 .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 t66 ax,y 2vptj+rn;,brv 2ulkm fwg4+.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.w,mn90w wdvwgc2, t,h0 $\Omega$ 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 in4tk2wv(2nege(x+ew c 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 throumf. hhxvy aa+;x2etf8 )t(7bp 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 the circuit in F6,/ljyvgxr )9g9g5 ,o9tn ncebywa k5ig. 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 cuh**-z;hz-y h7kq nxe orrent 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. 19p+w+jip, n+ r,iby a+r-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 (1)l mrc vtg+v4 $\Omega$ 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 p;a86;en u(pp1eglbrz oint 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 u0m/sbs d;m q1i2 td-ipoint 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 pemk- .83xqzcvoint 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 inab qblh4 uh+): Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential dropb8rg 8x13o: snk .vadh from point A to point 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 iufjv3) yd 0( dhdzd1eb:13v cwn 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 in the 8 kj0nkg 5ec3l ((gv/mcq t0g1q $\Omega$ 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 inyg. pag m( :s /q-hjjmwbl2d/7 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 i/-jr iiw02 qfan the 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 the-wx1lj, umd 8j 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 co bkvjmy2d(ke/(hrs 5 5nnecting the upper left and lower left corners?em /jys2h rb5k5(dv(k

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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 pglgr /:9gf- tiyds+s)hzd* / series. The equivalent capacitance of this combinatydisgfhds):rp/l -/9* z tg+gion 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 caxr g(;a5bx0zr pacitors are connected in series across a 12.0-V battery. How much charge is stored in the 5.00-mF capacitzxa 5( grxr0;bor?

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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 incr(oyod;z5l88xtx ga6gfh. 6 series across a 12.0-V battery. What is the potentialo;(6oa xhd. flz8c8g6xgr 5yt 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 capacitri0sr;-h7ptdl : 8f iuor are connected in series across a 3.0-V battery. ri islph8f0;dr:-u 7tWhat is the voltage 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 capacitor are connected in series across a 3.0-V batt1b 0bg2 xycv5;kfd8,tzefc- y ery. What is the voltage accz5 y0 e gfy-b,bftd ;vx1c28kross 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 connected ij+a) h((a rhumn parallel across a 24-V battery. How much energy is stored in ha(uam+)j (rh 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 a3.a: k6ggoo g,0dyff:)snl/ ;lj7xe zu ;rri jre connected in parallel, and this pair is then connected in series with a 30-mF capacitor. W ro6;yu7x3. o,lfaj ng irdfkelj: g:sz/0 ;)ghat 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 6.00 mF and 8.00 mF are connected in parallel. The combin zx3az;9 tk5jf,c, ajjation is then connected in series 9f3cj ;t j kz,xa5,jzawith 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 parallel.1co+4 fi hpqnov uo+ 036 .a*tarh:g4nklnok1 The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF c+non *th0ugo k kfila:cq+v4opr34 o1 1anh.6 apacitor?

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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 connected in parallel. The combinatio8q; tdo vyfld1zih0:)n is then connected in series with a 12.0-V battery and a fi1dlv0hd:o q yt8z;)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 throyr* t:1s q,:p:lj saqough 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 charged0s eymbx/o l9 t::tr qc7lcf6, to 12 V and then discharged through a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a 0.50-mF capacitor. The cj ur t)n5ny* 23 6kc(zo;4)eg8pcrrciptvk/sapacitor is initially uncharged. The RC combination is charges kn5pot c3zrj r84;* / ycrv)6tpcn2k)(geuid 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 charge76wxmzitf :y) 1edwa1pfel5 8d to 6.0-V. It is then connected in series with a 3.0 fma6xe:dyi wf t z87wel15)1p$M\Omega$ 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 rep a7jq4rb uddbx4re -0+s dnz*e(0ew+sistance 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 reog -9 t lere*ymm)5 xq/fiym24sistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistance owvfg79w*ok7bospofrd 79 - x3 f 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 cfzv-h r ,-oz/es5h) gdm:cz h*oil 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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    总分:102分 及格:61.2分 时间:不限时
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