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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,kfec02afd vl5- *jk(f when no current flows to an external circuit, is referred efvkal*c0f52(j k-f d 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:i urd )io72 w2vz(zsc the terminals of a battery, when current flows to an external circuit, is referred u id)7v2oz iwcr(2sz: 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 resistv.7xndo; .hsf ors 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 conyuw;sha:ht3+wafcs(36 7 ezp9*p xcnnected in series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a battery. If thqwl 6 ;wtvlrw:he50l :e current of 12 A flows from the battery, how much current flows through any one ofwl :l5;wl t 60evwh:rq 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 awei 5kspdu928(s hr4a re connected in series to a 12-V battery. What is the voltage across any one of the resistoaip4 ( 2u9s5k s8dwehrrs?

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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 pafnm c o40p-r 9uze(u k+lc7:sower supplied s( +:zca79 urm40nc leof-p kuby 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 connected inxr; a1/6ldazo 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, wek*m ry:l.qx:dc.fc ,b7faa0i 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 t.ba )m3;lqsm oo a 12-V battery. What is the voltage of any one of the res aob3m;s) .mlqistors?

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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 parallrl8d 2oe*j8ns gra6x2el to a battery. If the current of 12 A flows from the b s2e gl8xn rr2jo6da*8attery, 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 lighnu)od*n7uqe,ie j .9ots are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires lead* nqeujuid.7o)e o n9,ing 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 adrgcw9f)i;x 7q n+ /ovnded in parallel to a constant voltage source, the power supplied n9 )frocv 7xw+/;qginby 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 resistan,fe o :0tp+nhuce R. The maximum power each can dissipate is P. Two of the resistors are connected in 0h,unft o: +peseries, 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 ju: llsv 5hxg1 hfwi8 gk76:jfh3nction 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 z2l76z0cau/zmw t/hu:sta z 2 rule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rule is an exam+3ju(idh+w h lple 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 gxm/c kd4w:7heut vy3; ii-n;example 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 circuils)1:j,wi w ydt 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 zh -p (obwa1,pi(tf08v/bpnmp.0 wanbatteries together in series ("+" to "-" to "+" to "-"), and place them iw fbpa0 m1bnpi ,pt(/.voznha (p-8 0wn 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 batteries together in series ("+" tor9m9 i6 p 7rwh.m+rhz)gb62x fk9syfj "-" to "-" to "+"), andzw )sx7rm krr +fh9mg9.j2h6 piyb 6f9 place them in a circuit, the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries qjc.; tvbl,+u5cs m1mtogether in parallel, and place them in a cic5l j.vtsu+c1;mm qb,rcuit, 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 connectedw7m -t) lwj:op in series to a battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in series, the equivalent capacita fm;, yk5i1lrxmonv3 x5,2fky nce o5f m;ly,xoyixkv2f5,m 1 kr3nf the combination increases.

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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 serj z,;0ih1 exq)ilxxte,y: 0 rqies to a battery. If a total charge of Q flows from the battery,yi1jq z;l0i,ex0rh e x:t)q x, how much charge does each capacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected1ni-/uos0z s x in parallel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel, the 1)avja.+i xrqequivalent capacitance of the combination incxqvaa1 .+)jir reases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacit 8i) xp:xvj7epors are connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge doe7)jx:ep8i vpxs 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 quc,o7 lr5ch1va 3zdl.z antity 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 connect,)3)u: dn/sup5w d hs/g.ykje9 fu rmxed in series to an ideal battery of constant terminal voltage. At the mom,s g) rm 3:y/ 9eduukwpn5)jdh/.fuxs ent 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 series8uw/01yjtj2(n 0otx6y vq(z3 m ybh bm to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the v2vwb0( monq( yyytb68/m3j x1jh0uztoltage 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 to2v+fqayq. ed+: 9agqv an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage acro+v df2g .e9aqvy a+qq:ss 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 shouldb dy4 x*(omop,

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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 a01q byniqf 2o(mmeter 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 lh, 0g(eut o ldi6*c4hproperly placing an ammeter in a circuit consisting of o0dhe4,li(6 l u*gh octne resistor and one battery. 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 resistance of an am7i*59 iobmcj smeter'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 h . tbm;by(htt6cy*3 ka 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 seri.b3zc4 /vvnties 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 resistor. What p/8-73 iuczsp t8k 8c n fb5d+i/peurghappens to the total current flowing in the circuit as a re/ sp5dkfugii p-8rzcp uc8 bt+n73/e8sult 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 uz r(quxttb-.y 2qrn-k927j cammeter, and a voltmeter is placed in parallel 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 read.r-buxq-z2 nr7tu9y (2jt q kcing 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 isyq/86(utsd3 isro-bz wired in series with an ammeter, and a voltmeter is placed in p3u(/zssq8ot i-6 bydrarallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, 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, avg08(ovr: +xrq x .qwmnd 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 :b-6rygjlb0ffwkv36 zr op d((-hm(o6.0 $\Omega$ 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, q4qvq-+y2(q ,t e/fbd3hmlt/nn 8gjsand 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 comjb :ey:iasa0 vmq9wo7 x) 6ab(bination 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 combinatinok8pdcd mq5b( 8t.,pux7*w kon 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 into6:t +u(r mvu:x uu qc)bero-f6 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 par:qx63fppe2w 2gn o +e8c;asqz 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 flows into a parallel combina.bsg jrr9(k .ption 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 u1ayav7+p7rf are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot,7yr 1pf7v+aua 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 light bulbs you 1ay;0ahkv (h ms)w10 )n1:ywjqcf ilp can connect in parallel in a 120-V circuit without trippa a h)n)hjl1y i(10pk sfq vy01c;w:wming 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 ) co a)(t+iohj$\Omega$ 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 1 +whdtv7+rfjit la-1and 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 4.0yhgw i8zcw-;: , 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 am:c-b v-vj1zg bo .s4cnd 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 and 9.0n4; .qkk/ p4flrox2xp,wnr ; x $\Omega$ 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.mxox.3tc:bb+ 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 the circuit in Fig. p6o kc(;jbku919-2?


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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 throughao c 3w)r.y8c, 5/gjzfbge/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 Fi5vhvas jxcbq 6tz- 2 jih.*xax)s19:mg. 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-gn8j 9 zm(z1vkhqg)v ,w/ftqk( x4u7i4, 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 lxcqt;a9u4l.nylq5r. / li ;xin 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 i a7wch7;mq*4wy f-, sh-jyon zonu.(zn 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 potentiat o4(ppw8dn 2q7eu e y+pdet2-l of point A 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 rela033 3gfx odysztive 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 point D relati (upx;qu: 8jb;lefqclk5 01pive 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 bxqt3ke(z3a0x/ehq qt /:/k;+a zobw b attery 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 3l 0(uq+ae6y r1wqs l1sm-2gksslbb. 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 in wo2u v / ju86yvxzorkj9co)u)z-7yg .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 /;llglh74lg y: jr k(ab2n b2 btk5+eain 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 -k/;tdv 1qs duin the 4 $\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in t1xr6 o;f:k3 cs*nbqiphe 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 18efxwt j9sgk t15g**+s:fq/sf $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upper left anupf+mjt1 g kb*+6zeg. d lower left corne1p6.kfugg+tm zbj *+ ers?

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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 connegf/,, q..7t ttnp b j7eg5f rg-hql8jyi 99vaucted in series. The equivalent capacitance of this combab/f8tv qfyenh.9gj,li7 -,9 qggr 5tup. tj7ination 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 wevj8pqg z th k;305:umF capacitors are connected in series across a 12.0-V battery.h0vuqwp8 3: e5t;jzgk 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 capacito0f +y mk.uejt8rs are connected in series across a 12.0-V battery. What is the potential difference across th+08k ftey.m jue 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-V battery.x nd2 oc- t8:w7u7dvqo What is the voltage across the 1.0-mF capacito7 w7cn2x o -vtd:oduq8r?

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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 xd +i cj/ln80fi 8+oaucapacitor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF capacitf/8 8iiujlc 0+ndxo+ aor?

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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 connect gk qk-47k9uscjs .y/t;n8isded in parallel across a 24-V battery. How much energy is.;qutskd9 g8syc/ ikk s-74j n 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 mF2 xeke;, gq1tp are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What it;xkgpq,2 ee1 s 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 combinatio uf-l, 1otwwr)n is then connected in st, lf-ru1o)wweries 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 and 8.00 mF are connected in parallel. 7d 00 mbksgm8aq:n;xs The combination is then connected in series with d: m;0b7xaq8s kgsn0ma 12.0-V battery 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 in parallel. j x mn+ 2ku4sxo.tm emi7)f:2yi(it;nThe combination is th:+mmtx ;jf .in4uo n(xm2ii 2e) kt7ysen connected 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 t:) cb :9fsrw2y hky(jthrough 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 tot;ce jj8ip;q7 :v+cmd 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. Thv9*ly:zz(mjew g- yt9e capacitor is initially uncharged. Tytz9 w-*y zjm:vge9( lhe RC 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 serij9.n /6my2or/ wwr pjmes with a 39ymwn6j.rrj2/w o/ p m.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 resistance of 1soo 5 ss-7q4eqn zf.8u00 $\Omega$ 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 wlwr 1 ui:9ig1fnxc3e- ith a resistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a,fr uo7k 1vup2jl 7pf,n internal 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 a coil resistance 8sgt; mypfo*(v 0p ijf*):kvuof 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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