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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 term+x:t nxsqsv b9ry657ginals of a battery, when no current flows to an external circuit, is referred to y:x6nqx b+s srt7v9g5 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 tk dr/t o nk9+7orm5x.wgg/a.4ztz;aderminals of a battery, when current flows to an external circuit, is referred zra7ordwg9/;nmda /.5z kxtk 4+t.og 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 resis:ujpboiz..r p0 5n- 1pkdxi*jtors 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 series,lhlfpo j.+v) 3mva8 w9xmn2(l

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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. If thf -vym)ti 9j)j1 vmd*m.oqi xtylu+ 41e current of4tf*jm dimt+)vy1 qoi-.1l vu yjx9)m 12 A flows from the battery, how much current flows 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 resistort+5s1rz8znrbtwt vin xm:44 2ygpa5p ce,d96s are connected in series to a 12-V battery. What is the voltage across any ont:xp s8mc5b9+ grn5r w1iea2t, ty4n z pzv64de of the resistors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in sest5fapx1*d n8n tk(0j ries to a constant voltage source, the power supplied by that* f8n5pt kj1dxsn(0e 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 resa5d p qjf:;sjx.gvmb,u0i4+gistors 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 connected in paral ke;9xei,0ac3 5+tlyyedkqk /lel, 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 tp21 a(6r ,)vl w3ar.zphplj1 2drmesso a 12-V battery. What is the voltage of any one of thelsrarspe2ad3r1 21zmv l ()pjh,.w 6p 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)7 qxipq:r:lu:rmvl /. If the current of 12 A flows from the battev7 lr:)ulxp r:mqi:q/ ry, how much current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Christmas tree lights are connebxg7sq)n 5w 0gcted in parallel. What happens if one lamp burns out? (gnqx w7)g0sb5 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 are added in parallel to a cons i7*qvsenwe ,-9whqq 5tant voltage source, the power suppe wniw,q*qhq- 9s 7ve5lied by the source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each of resistance R. The maximum power ea :/9p hhc5ftvgch 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 network can dissipate? :/5tphh9gfvc

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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's junct764i,il wz 9fdra9swfion 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 loou*d.su/0gl g1l 3buk0c0xhi 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 ;a(3dbd q +1ryzuov;i 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 exampybwgj--z9 jej. k (lv9z12m7mm aa o1ole 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 circuit shown?en)gzk wi4v+( ;2mkl 6c q6uii/sxgb)


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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 identiczyq0fn z+l2 xd775 uwlly;;tial storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circui ;2iy nw7y0fqlz dt7xzul+5l;t, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("+)jrsc x*3 gbl-- ejx1a" to "-" to "-" to "+"), and place them in a 1je)3rxb-gls*j- xca 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 identye:b amvsz3*ep :z; e+ical storage batteries together in parallel, and place them in a circuit, the combipva3+sb ::eyem; ez*z nation 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( kq -6kry8gyt,9. xquh9rggyrs 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 sersuv7.vbnp f 6;gv lb4iip0,,vies, the equivalent capacitance of the combinatig0, s4 6pv,v7.nibpbvl;fvu ion increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capaco7uyr2a3dwdz lz .5f6e3 h6dritors are connected in series to a battery. If a total charge of Q flows from the battery, how much .d2 3hfarly37 oudzrde66z5wcharge 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 paraa.98d7rb)q+fb e wvn6ex g6jhllel 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 exj5kyu6 z9/mw c )x+ojquivalent capacitance of tx9 ujy/5 )okxm+j6zcw he 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 capacifm wfp50;c 50dsvufk7,2:utl+/nrrlo avs l: tors are connected in parallel to a battery. If a total charge of Q flows from thwfs: 5 f/vr k ta+lr0, un7:pdos20lfm;vl5uce 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 quantitpf62c1ivk gmsbah0wy) ,tw7 ; y 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 an mklnybl*o *ip.33 h1qideal battery of constant terminal voltage.lblhn qk13p.*m yi 3*o At the moment contact is made with the battery, the voltage across the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected h vryts/e/ica8sx1;7 in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across xesvh8ir a scty;//71 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 o/dedd81 ybo50 jq9c8cq s6 lsbf constant terminal voltage. When this system reaches its steady-stsqscbo0 59b 8/eyddcjd8q1l 6ate, 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 should53 c+,sv1yzhwb hmzz5plqw2;

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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 ammey)y0bx 8p z4 jfv/ bf+nn.h;mater 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 an;j4llvw48x i1riu/fu+ n3b1j 1bfqn circuit consisting of one resistor and one battery. As a 4ji3;uj ln1b /vff11+rn4nxq8bulwiresult,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resisf0wvfau7 h 7sms98 n;ctance of an ammeter's shunt resistance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construct a voltb4 6g3ap cd3c: yp/xvameter from a 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 of a voltmeter's series resi3skfr4.gp :dgxi(3c ostance

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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. What j8ot3l3.yju x happens to the total currentut.x yljj38o3 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, svlogscg5n 2n6cry5- y ja3x45f9j0qv hz.;x and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If jcv5 g yac;sz 5s.3j40x5y-9xvgrqhnfo6 nl2 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 an aengd,p16q m 9ammeter, and a voltmeter 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 ren1meapq9,d 6g ading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0, gopexj0q1;0eu d0yx 4 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, anh/zj bes+c8 2pae 6m-fd 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, 1 3xh4n uwv ,y/zih,7da2, and 6.0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a serhy((uz3y/qg h3 jlzv,ies 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 into a series c/:3h+f:6 cmg/eu s(l)asbo jaoq 9 ofiombination 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 0)xrzzp 1pbze2d t,a6 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 au8( b dfwtowxs-9 6ul2 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 29t / gdr,zwmo-+xn eoof 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 connected to a 12-aa .y4o;k ebvs8/lbc 0-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time a8cy; 4/ oksb-blvea.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,q+ 42+koattp wn1wsw of 100-W light bulbs you can connect in parallel in a 120-V circuit without trikt2w ,p 4 qsa+to+w1wnpping 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 nv.do(2h x gk4qg7da zsbo-3m g73soeyh f.2:$\Omega$ 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 30c(0z )l p3btfn 8z;dcn $\Omega$ 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 4.03lq)x 25 zwxbb, 6.0, and 10.0 $\Omega$ are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0 $\Omega$ resistor, what is the current through the 10.0 $\Omega$ resistor?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9.0 (d 5j ylu :f(dqg,9ke(aq,js j$\Omega$ 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 dcg-s zrjp4t.8thqw2 7 c(qwdi8 hk81 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.-s: -q1h/+ a/5kv6r5pdkdksrfar 3q nl.prt i0 $\Omega$ 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 resistd dt ar/2a0s0fance of the circuit in Fig. 19-2?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 40 \; V$, what is the voltage on R1 in Fig. 19-2?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 20 \; V$, what is the current through $R_3$ in Fig. 19-2?


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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If 1.5 A flows througj3s0.ojl xzd,h $R_2$, 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 cirb;r04qto.haiis 45hjm s t1q;cuit 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. 19-4c6y-mgxezy;jysf (3r(sv/g n 4a90 my, determine 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, determine the current in the 3 2cl5zcx+lxa7$\Omega$ 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, determinb:ja. aw *:(bzyr ny7ze the current in the 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 p,jzdy, - kepq6oint 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 B relative to point C in Fig. 19-5 +2tkeu:bs;wzl12-k fgvo ls(?


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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 h sif :y* wnwk1fc2a-) jutx62of point 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 fro4ng :zhx2/f dog i3e6vcxhr.-m the battery in 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 drop from point A to poia: llu1 pvw y(7i: hphl5s)hq2nt 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 thea1 ca/bhm8xk--bj3ixoi4qx* 0c4s dv 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 *9/swhe far8 uss9zeo-lkux +7an/z7$\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the ;nanev4ss1;rwjz;6-. d f rn v4 $\Omega$ 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 pe.z9: h wbp0r12 $\Omega$ 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 18 e z(kp0 t0xx;c:j 5cwt$\Omega$ 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 upperf wt7 c0se y(**krmlyc79vywi+,0 sua left and lower left co*iw(yctf kaymy7s 0,+ w v*7sr c9elu0rners?

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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 6c:pc xwf2qu gont:1 *connected in series. The equivalent capacitance of this cc nwux : ogf1*t2qp:6combination 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 3u jvrt mr(,6mmF capacitors are connected in series across a 12.0-V jr6, trvu 3m(mbattery. How much charge is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connk.3)r -3 6omm43g9w pgtensigu68e 4bgncxne ected in series across a 12.0-V battery. What is the potential difference across the 10.04e rksxwn8e4p-3 nc3bnoemg i9g t36m) ug6g .-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 connec i0fmjp p2pg*7xe-mjr:ci )2 mted in series across a 3.0-V battery. What is the voltage across the 1.0-mF capacitoi2 mgm2ricp0ej 7*mp )j:xfp-r?

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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 ba pv,nch;c9 io*ttery. What is the von,v;9cc hopi*ltage 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 c6pu1 a-ot7c(boi osr9onnected in parallel across a 24-V battery. Ho9prooo6s(7- ia ubtc1w 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 p/ 7ou 7 iwagaf*p0*3x nynnzg-air is then connected in series with a 30-mF capacitor. What is thuz7on*x-w73innp gf0g / aa*ye 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 c+8cgu6 gp3irib4eat8 ombination is then +gipub83r g atce4 6i8connected in series 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 a-1m n9smbv-j:tq n d:(uzg6klnd 8.00 mF are connected in parallel. 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-:u vngz:qsj1d --mm 96k(t lbnmF 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 x3 u)u5c qkw(;y)vnzj p.ly6st 8jat 2mF are connected in parallel. The combination is then connected nxkt2wv.s85q3) c jljy t;6y ua)pz(u in series with a 12.0-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 charged thrx)skm48 uc.*.lm5 t5 mscdr zmough 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 and7huxt9.v, hvj 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 co i-u-.qqibxv1nnected in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The -x vq.b ii1-quRC 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 serier ii-.s /-y ;y rhl7u.pctc6z *nnd/tos with a 36/-ln.rp. ori;nyc*7c t -hzst udi /y.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 res9*))ljjtod m aistance 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 o-,6sg iojq ug)s jjy:,f 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 ijbb*;81l-,bw kj:/keva p4a6qrr hjonternal 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 3cthr:9 ztog5 4j 6nrra coil 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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