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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 battery, when no currtku7jt7 mqg5vkfr 7(0ent flows to a7qv (5k7tgr f ku7jm0tn 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 batterygr,,,hmj-lhb: 3 + z.-ws n ocjr(exry, when current flows to an external circ w3hrg nz (b- mxes j.,rch,ojy,+l-r:uit, 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 series to a batt*,eh ru2q 4d ai1dm rpdoi6/az*z fq,1ery

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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,i48fs/(sedc 19hm pbd

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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 conneffqx6wr x,a:7+ 7r (chkh(cs ucted in series to a battery. If the current of 12 A flows from the battery, x wfa(c:, 7 7rhckshxuq+f(6 rhow 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 resistors are connected in series to a 12-V battery. What is thwx72ncu /y3r fqj, -ujz 2bwz+e voltage acuy znj ,jru23cwqf7/-bx+zw2 ross 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 series to a constant voltage source, the power su 8s1d2r/ q 74i/ogsrq:ogmtllpplied by the souro4l ql/go dmrirt7gs:s812 q/ce

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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 2alnw: x9sd arwgz9v 86 /xn0yare 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 par45zxlj0s/ nr aallel, 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 0).,hurod lvuconnected in parallel to a 12-V battery. What is the voltage of any one of the re,vh ruu) ol.d0sistors?

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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 connecgs4g( t16v vkjsz8p, kted in parallel to a battery. If the current of 12 A flows from th 4gkpv,jt8k61v sz( sge battery, 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 l754 -j.*kjspf-rtdt fya :w ibights are connected in parallel. What happens if onektf i.-7 p dfs5*4jyb-r:ajwt lamp burns out? (Assume negligible resistance in the wires leading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in parallel to a constant volavr )ag9.4;l0 jdpblph+ s 4ywtage source, the power supplied by thes4 0pypwb4.ghva +j )r; lla9d 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 resf(8q3yslm c s6istors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors arecsq6 8f(lm3ys connected 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 junction 1 9wd (g,wlc-n6m qakqrule.
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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 ruleh inpx (ogc yx0w)k42).
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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 example ofn 7q)f1j;pv xazr17 eo

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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 (,p6z mweh0z+cd a7vah4n v:o)dqp9c 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 va*g,c12f2(x gkibcw xv1evtnzv w 2/.llid 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 batm2(/ k3nxf +hump e*sjteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination wil xsnk* +3juefh/ 2mp(ml 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 ("+" ygt)tl+)e(xp to "-" to "-" to "+"), and place them in a circuit, the tyltx)+ge(p )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 identidw76th wat rv9* yh ,rrj n/+kr6j(6lgcal storage batteries together in parallel, and place them in a circuit, the combination will l7h6wkrr/w6 jd(,rt 9yrg6nt +*h javprovide

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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 capasdnos)f :l0hm08g .o zcitors 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 connezat; g59rhm .0gxkl/ycted in series, the equivalent capacitance of the combination increas/rtz 5;k 9amglxgy0h.es.

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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 iebn q9fh)rl +57 z-kken series to a battery. If a total charge of Q flows from the battery, how k9qfh7e k +-nze)5brlmuch 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 parallel to a batters g cfgn9k+g14y,

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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 pawam 1g-z(zc-ndfn v-5rallel, the equivalent capacitance of the combinationcnz wm15(-zdvag-f -n increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitobw2;rodrp b72rs are connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge p or 7b;d22wbrdoes 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 ku3 s(:+ih /vg(acpygquantity 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 ba2xkrvy:)l* zfm0f17w qeq rk9 ttery of constant terminal voltage. At the fr fqmk 0yev :9q2 wrlz)*x17kmoment 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 in 3u),s xz) 0n6x7ivah768 mpv m,bdukprea; rh series to an ideal battery of constant thsa76,6ukh3p r d)mbze,8mr x0);p xv7an v iuerminal voltage. 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 an ideal batteuctkm (ihn - f+8*y0evry of constant terminal voltage. When k(tv n+y u8emh*-0ifcthis 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 shoulcxle3 (q;:evpd,;zah d

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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 the ad;71i ml (cqn4fzoic 3tdition 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 cir:l;yg mz*ic8v*x:k l s;iyi+wcuit consisting of one resistor and one ba*z: m visyix;:8wlly +ic* g;kttery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistancew :1 2 cn0.mzxuei rt mpa+p(.cd z3dxg8zs*t- 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, one3um0n1u owyq4-ue r0*9yro co 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 1+ad qgbn-e(v u1 b-zua voltmeter's series resistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a voltmeter across a resists1 k2h t;gnfj:rxg97vor. What happens to the total current flowing in the circu:; h7kjg rsgn 92xtv1fit 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 a+ 8j6bkdvg 0dhmmeter, and a voltmeter is placed in paral+b6gh8ddv0 kj lel across both the resistor and the ammeter. This 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 6r0cljl( ) /d yy vipg;o;h6yoplaced in parallel across the resistor only. This vl0 /l6yjigd;pyc)o; o6(r yhnetwork is then connected 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, 3.0, 5.0, 0n-a:v)cw3s 2 f axnjiand 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 12pb 8ksy ay/ d,163ihbv, 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 1nck2 pi9.ksdu9ci)/ f2, 12, 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 series combinatiofm gfwpjhq;s d5g66hc6;.j5 hj0f1-tshbc 3s n 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 combi4doe;)n (pm f0htdf1 unation 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 yz:3:xuc)(gn vlv+ae 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 combination of a m,-phbj206w77p ( jw spa fgop4.0 $\Omega$, 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 ubvd.8k4 6na9 d5b pkointo 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 connected to a 120-V circuk.1apkcqb +, ,:tnz poit: 1200-W toaster, 650-W coffee ppkpna.,:o t,qbck+ 1zot, 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 number of 100-W lighby0c *6zy(.3bcm z9f hi- awpet bulbs you can connect in parallel in a 120-V circuit without tripcbiy60b mezzf whcy( .39* a-pping 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;-9 hb u1 w8y3i8dymrrdccprun5)e 5l $\Omega$ 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 ave)xb trl).( nhvt,b9 nd 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.d,il;71owl- cvpuss; fqk5 v*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 5.0aare85 ++wwn+ tebx+d 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 anm2,ngx yu 8isgrdq.q1b4 my92s.;e op d 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 9.3l6e jtir+w46meif.(ss t d e,0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 9.0 $\Omega$ resistor?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.0 $\Omega$ resistor is connected in parallel with a 6.0 $\Omega$ resistor. This combination is connected in series with a 4.0 $\Omega$ resistor. The resistors are connected to a 12-volt battery. How much power is dissipated in the 3.0 $\Omega$ resistor?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of f 6dful: qw;ne1tl 9-athe 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 through jah10xhx ki( 7it 44xy$R_2$, 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 vr j0rw2byg5n x2 bwvb-vy- wo1l9(w,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,l5vgmv2m zz6f( kb g33 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 Fi /evmak9 l/x: 8:iywayg. 19-4, 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 theoj(v jg8l4.ibduz. dp7 6 :yan 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 bo3 wn4dnkz84A relative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to point C in Fig.6 44;h(m0c)suurktm7lxl ilu jl6z0 d 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 point; , ) cw8qpuonrbu)h-wf m.)rxdkjz-o.q)it5 D relative to point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from the battery in Fig. 1u:9ewu)ls .yp o:bhx igu46k 29-5?


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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 Fig.mzpsf3 l:.2 *w gtk6aw 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 tl06aa78qgzd qlcrm07-y v:eehe 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 ;mgf(ve vu,h- v 72dlp5d7rs 0g ro4fh$\Omega$ 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 4 b:8suzc2jyvi p:4t 9t mh*s1y $\Omega$ 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 t:cf1 lp9l7idcc*i5j uuu 6z(z he 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 invw7n/y1iin7a: s.6 t5 yhmhtn the 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the uppe.ze(*x m f2ovir left and lower left cor2*ivzme(f ox. ners?

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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 equivl0)w:7 s nng3zfxg6e malent capacitance of this combination is: wx6mesnlngfg0)73 z

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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, andz6if4+5ldr hhs 4 2 scbh1yw,c 50.0 mF capacitors are connected in series across a 12.0-V battery. ,lrfy1i ccw bsd2z644h 5+ hhsHow 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 i:vwwrig ziz 40p;10dfsy8 s -mF capacitors are connected in series across a 12.0-V battery. What is the potential diffezdwr-zs v4wi 0ig y0p:s1i; 8frence 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(kbzn4 m siq5ygf 7qi y:o68-j.0-V battery. What is the voltage across the 1.0-mF capacitgik8y:o45- mq( 7byjs6iznqfor?

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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 capac0 ha qyke y7 abczkih/g,y29 um2px;8.itor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF c ;/qayy yumpa.2xg 9b e hkz,87cik02hapacitor?

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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 8 q 7k(ux7njyszx/il.mF capacitors are connected in parallel across a 24-V battery. How much energy is stored in this.kzj8i/su ny7 x(7lqx 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 pa864gm2n gh* nz2*pbctx, ryp1uhof2 air is then connected in series with a 30-mF capacitor. What is the equivalent capacitanr4oh21fn2n2mga,g8h z*p6 xyc u* btpce 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 pv;,;s w9r 1qnolqica+ arallel. The combination is then connected in series with a 12.0-V batterylwcs+9 nqroa ;1v q,;i 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 af t*xh)v jin2b6jv2 bb5 d2vfw.e28gzre connected in parallel. The combination is then connected in series with a 12.0-V battery bn* hvvx b 822)e6j ifd22fz5twvb.gj and a 14.0-mF 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 i 4 hx.hj* xf.pox5ml(zltt,3un parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF.5x* olzhx(,f3xm ut tl4jh.p capacitor. What is the voltage across the 6.00-mF capacitor?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged through ;v i;p-8rumkza 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 charb qju;xudt3no7 s .29bged 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-l8klqdiuvv6n;4k;( .cf 2rtw9s7 cf yx;yat ,mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. l xfr k;k ,v7sc(;2fyq vcn9it; duy t64l.8aw 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 thengr fu 9arkp6;nk0 lxzn4; whrxo-sl- b-3 r(.j connected in series with a 3. k b3h afrw9rjknz;(gr-l 4so6 l.;x xp-ru-0n0 $M\Omega$ 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 resistand2g5o he6adb 0ce 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 resgf1qk/n5y3i *i (woqv ) nlx+by0zn(distance 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 of 100 vc+3v zzimjd ,l2tt71 $\Omega$ 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 rr e geo9uhs0sv ;rbwj1a+,51pesistance 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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