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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 cyuuya *t jk9b41hx7h- urrent flowsx uu9bj 7yht h4*y1k-a to 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 terminals of a bavqbukc6 jj7gh 1.s:v) ttery, when current flows to an external circuit, is referred to:h kugjbv7.1 6c)v jsq 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 resn5kud4+eempo c 359ig zdi3t6istors 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 . djehuvj2vv, (4qmpq6 0kax6 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 serie3nks 3rny-nk3 s to a battery. If the current of 12 A flows from the battery, how much c33nnnksky -3r urrent 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 resistors are connected in series to a 12-V battery.51na9x)d :9pweqtcu bpm66 pu What is the volta6b9qpdn 5tpwu 6c)m pua1:e 9xge across any one 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 seriju)37icd eh.m/ q(ewwes to a constant voltage source, the power supplied byjq37(.wceihmu/ e wd) 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 conni ds s9zu-33 gg6xf-iiected 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 parallel, we can be certat bzs a0px3h4m,ov2tj4a)) a,)) e+knwm hiomin 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 pp gpd6 6yla2**p+ xt;rdxclt-ncs did8 hx-8+arallel to a 12-V battery. What is thlrx-6+hyi2 p-tctald8x**ds;d g p+pnx8 dc6e voltage of any one of the resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connecc(qz 2c01owlu.p.rtcted in parallel to a battery. If the current of 12 A flows from the battery, how much current flows thrr u.cz cc02w1.tpl o(qough 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 li(tbzal ,qi4 ,xv(rrx9 ypr3 m*ghts are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading b mal r qx(z3ry(v*4i9rpt,x,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 ind( z,ndijd/. .qpa3cl3l1: nu 6dqpgd parallel to a constant voltage source, the power supplied by t,nlud.q aq1ldd/cd 3:.jnz 6 pp3idg(he 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 Rt6 5ayhexjyz5ahp 6(h:6 gew:0cyo o 7. The maximum power each can dissipate is P. Two of the resistors are cogz yj:aa e:o 06e5h7 65owx6(ypythchnnected in series, and a third is 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 junct0fu*wxhk*8g gion 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.*;x mo9r/xst ix6t4 u;-ovtot
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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 anqpkf+b xu4;k :5os,5cb u pmi0(cz4 rq 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 examp pj t+nck)ks.1le 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 fodp ;7;fqdok u z:c*gn1r 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 bal q,f34bb5iteg) ;ao ov vl/4etteries together in series ("+" to "-" to "+" to "-"), and placoq4o)a43ie/bvbe vt5 gl,fl;e 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 identical storage vwu* js;9o f ibh/h/oz5z1 (ivbatteries together in series ("+" to "-" to "-" to "+"), and place thz ; /o/wbu(h5hfi1sijo v*v9zem 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 inef1o 9bp4qb2h dp+/c radq*f9 parallel, and place them in a circuite h +qo/1*qa db9rbf42dcp9pf, 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 capacye5ct jei 6.h-5gq-buitors 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 capacit1iue2b8 8hy gcors are connected in series, the equivalent capacitance of the combination increasesc8i hb28u1yge.

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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 th,i 9sgnw*o 4akl0r0ii k)v+a battery. If a total charge of Q flows from the battery, how much charge does each gsvht ,ii4kl k0ow9i0)a *nr +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 parallel to a battery,noe*y* d(f/purhe (ka(y/gfhg;h 1:w

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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 capavp4/i e-ftnf 1 n4; v,,v zrtui8cj)gacitors are connected in parallel, the equivalent capacitance of the combination increases.,pnj8 i/r) nvtvf;fg,ez4-v ci41u ta

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacito + 2tmyz.kv;gbrs are connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each capacitorz2k+.yvgbtm ; 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 for4 dn *)z(4hdy3gfgmh y the quantity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal battery oy a7if c5b*zir1e.9eibj66c , jxlt8yf constant terminal voltage. At the moment contact is made with the 56f,cj7i b yi96ez.e a*tlc 8y1 ibrjxbattery, 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 in series to an ideal battery of constd :v8rupvjc -yp 0sjl*8(*v mmant terminal voltsvpvjvc:p8(rlj*-*m u0ym8d age. At the moment contact is made with the battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to anpcz0fgt.9qleo o6c0 ),tw6z1ayb hp 2 ideal battery of constant terminal voltage. When this system reaches its steady-stat0oqzyo 0g 1tzcf)tl2,h 6acw9p p6.be e, 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 shoudis k9qr)) fxg/y,i m5ld

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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 by thec/4et 3j u/ler.vj5/ qrbtist+y 59kw 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/caxe65 arsfg. b-b6 cting of one resistor and one battery. As a ressbcr/b ag .6xf65a c-eult,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resist7wm(d v.dr,q nr9kv5 stu eoj8 o(r.)hance 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 voltmeter from a galvanometer, one n) cgwudnmt7vn):z1* rbu;3v 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 bqxr.u2,h;q- u+fk+ maevt9 xa 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 obtaine*; nc5-xggy/al o3lpad by placing a voltmeter across a resistor. What happens to the total current flowing in th-g n gc5l /o3*xl;yaape 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 x -og. ny1p.lavoltmeter is placed in parallel across both the resistor and the ammeter. T.onyglapx 1 -.his 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 with an ammeter, and a voltmeter is phhl;5hqj 5r )edj) yg3laced 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 h r5dgjey;))q53 jhhl 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, 5.0, u xj.-.ots)o15uez+ liso fp6and 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, ,*9ibyvb64 sc/p)3b wcypm w uand 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, aj 3.pzstqnve-r,s, +d nd 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;gyl38tbp :q( eveqx4 into a series combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combination of a 3.5;75fq6 bnjps0m vs pt0 $\Omega$ 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 mv.fo8bb.h+q/)b,p6 tav 6clgvdi1 ainto a parallel 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 parallel/ 99lt 6t/-cpuu obn*k a9jhy9n j/acb 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 4:00j8um jvtv rr7 g8b/xhquya 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 connected to - x2nuxihr.* ve0a1tea 120-V circuit: 1200-W toaster, 650a.e1 u0*nr t-i2ev xxh-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum sj6c brps-;: mnumber of 100-W light bulbs you can connect in parallel in a 120-V circuit witbm:jc;r- s6pshout 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 2.0 zulqx ctymt6g, 71qm -9 2jlc;$\Omega$ 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 aii2 7zta vvv52 iz5t: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,s3:o7l z( yg1y1h: ltlqcuagk ud08i9 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 9.0c)j -k*kjhn+m2yusa 5 $\Omega$ 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 7zcjs.hb6 bnlxo7;w . 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 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 9q.xis 7/cv 7ys.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 os,zsj nu72n)3.fgc y yf 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 througs9/wuhtu8 8qrh $R_2$, 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) wyor u55ybvtu 0nu.; 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 c, 0kl5p.aeov77,0 y dhwcxct kurrent 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. 1 mm;aogm6 )zykdthd91o.z9i4 / nmu1k9-4, 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 iwz b- hug-3b x)m6gq-ze 0k.ydn 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 poin(p t0zlibar (- cq 8ut)xl)*xjt 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 re nxczx/h0r2 2-ui ndcl9k- 4jglative 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 potentialm0 ae: b+6klps of 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 from the b1f/3brt5h mr6zde.ax7:e p nzattery 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 point B in t8c 4e8ep 3 0,nafn4igyf mh7cFig. 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 thq (e7/yuay x.we 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 iv*x mo2jh;ki/ zin7 j-h0z m+ab(fx5en 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 th: x7paoy +63wn fxf4nb5uk t4h6m bob)e 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 .oyy grh6d/ce -ex9e07m:jpm $\Omega$ 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 i7j azn9)-oqqh(jdk e6 n 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 wirex i3lbh *n/f5 gg( 6hfzdb1,as connecting the upper left and lower left cor(, /5g sxdfafg*63h zinlbh1 bners?

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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 co19niyahiyr)b v: 3 n0znnected in series. The equivalent capacitance of this combination inz0hya b) 1y9vni: ri3s

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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 12.:(k hqnl .6dla/k:xb g0-V battery. How much ckl/abd lqh6x ::k g(.nharge 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 connected in ser -k gn*.eoc eg6pr+o0pies across a 12.0-V battery. What is the potential differen- noe g+p6*ge.crop k0ce 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-Vser*;y e m2-(f bgebs6 battery. What is f(e;s *bsyg 6rm2ebe-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 acrosmk,h rzzqs+06y 4yj i7w35 d9 xut*zdrbkld89s a 3.0-V battery. What is the voltage across the 2.0 kjm + t,y7qzl 0r9h4zs5wu3xibrdz6d*9kd8y -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 in parallel across a 24-V bn368 kb/nsbwa pl )dk(attery. kw6np)k3n(d l8b sb /aHow 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:dw jml; dw68hm qv 5aos25*ef pair is then connected in series with a 30-mF capacitor. Whaj *a5 lfo qm wed;v25s8hm:d6wt 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 b/7bsh .-e)nf jd/dfg7sjjf- are connected in parallel. The combination is then connected in series with a 12.0-Vfd/)g d.hjs-ef fbsj/ b7nj-7 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 qbni s -67qsc8e7.ypj parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-me6i s jcp8q7b7snq. y-F capacitor. What is the charge on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. enxsmat1 y.khn u+5bz4*28 q/kr tl4z The combination is then conny4z2k/ml*hz+4 q1x5tku sne8nt.r b aected 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 o-aj.gmx jgzxsjdj*/9t/ 6 a2charged 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 throu,keedyw8 3i n ag)1r+zgh 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 l2 s akm 6z5oj)r1zo7vcapacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is jv 1lrm76o zz52) osakthe 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 * 25hnz bepmd5 f:f+xtcharged to 6.0-V. It is then connected in series with a 3fhxe pn * btd52mzf:+5.0 $M\Omega$ 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 resistancey7le2w hv, k j-jigb3 y6j7u)h 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 28bcz* 6l boy, vqn(g-9zc fl,j4.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal re 9j e/5.c5u /mr9cktmt(en iuhsistance 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 coi((olv g w59zjfl 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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