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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.z lehwlz7e 9*inals of a battery, when no current flows to an external circuit, z7zew.*9lhel 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 battery, when cd .yx*gde uc)5urrent flows to an external circuit, is ref xdg5d*uc)y. eerred 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 bsr+1gj80m6ftz 3vsu w attery

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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 servs ld1+6lxe7kies,

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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 the (n.+7 zdknnbxt 3aig8s(z9 gb current of 12 A fltzbz n dn(8ax+.g3 n7(bsikg9 ows 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 resistors are connected in series to a 12-V baaswy qi**m-7gs miy+, ttery. What is the -i*s*w7ay+gsqmy i m, voltage 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 ar-n;of5taww9ghp :./lxq26dos+ c jkl e added in series to a constant voltage source, the power supplied by t65 /29kl h.-dows;jx wcntq:op +a glfhe 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 connkfb azc-+ru 6,jxi; t3ected 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 connect+wr*q1 5fvla jed in parallel, we can be certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a 12- kc9x3gi h8 4)xsx0avpV battery. What is the voltage of an) x 4 pa9h3gvx8xcik0sy 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 connected in parallel to a bat 4x3evytir,aozmrx1.i.m ) p7tery. If the current of 12 A flows from the battery, how much current flows through any one of the resisto . p3ex7rm.a) 1t rmyvzoi4i,xrs?

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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 strin e5dx, d t8gl:ikya;3dg of Christmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume ne;ady tgdl5 k,3ei:dx 8gligible 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 constantsa .meyn:;* exj kqe,2 voltage source, the power supplied b* ;s :kaxn2qee,emj y.y 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 h(gc,e 2 0e*sxu o4ydamaximum power each 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 meausd4 ,0eh*2c(x oy gaximum 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 ju2l g6l3kb +c;1objcognction 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 s9j iwawdl(acy 6 +tfep4 y/t9n+xz(2rule.
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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 examplcx:js,m3 lp 0 wr:aw-hrfg+akg z 96m0e 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 exampl.vhl:z rnk9ml 3dog ,*gux ;k0e 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 i7lwwfd3w1 )bs2f nq5jcot7 ; the circuit shown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("a08 m ov-;m+sk6x oelw+" to "-" to "+" to "-"), and place es8va o0x kl wm;+m6o-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 batteries together in series ("+" to "-" t m8lbx4cp ((gs:pyk h(z yxgnzjy,*bf6 - w0s)o "-" to "+"), and place them in a circuit, the combination will psg-m * bh z8y(()zslgf6ynj40p(y xcb:wkp,x rovide

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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 in pi :-jgq odo/- f*e.ynsarallel, and place them in a circui.yse j d:onf*/--gio qt, 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 are29,wwmqke+eezdlp s8l:on2 w+ ;x-bq 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 capaci;a 44:jmytptp tors are connected in series, the equivalent capacitance of the combination incr4pmapt:4;y tj eases.

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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 a battery. If a bpgx)mmfc ,)4 total charge of Q flows from the battery, how much cha4x m,cmfbg ))prge 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 )f,ttwk-6 yk rdbo(. pparallel 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 capacit7 xq;i)es h1yvors are connected in parallel, the equivalent capacitance of the comb sye)q 7h1xvi;ination increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in parallel to a battery. If a total cit-d vbp4ue;3,km 4yeharge of Q flows from the battery, how mdb, -p4yu ev3tek 4i;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-t0 auscodjdx5-pybrdv as*/+x3z +7 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 tuegy4 ; hj+ ux0h9t1vin series to an ideal battery of constant terminal voltage. At the moment contact is made with they0 thg+jh9vex;u t u41 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 series to an ideal battery of hfr524 wlp7 f7hrd k/8lerh0m constant terminal voltage. At the moment contact is made w 7f4l8e hk2ph5/7rhrfl0wd r mith 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 connedw09fooy7v:p *9. .ahebkm kwcted in series to an ideal battery of constant terminal voltage. When tw.mhbfa*k .79pky:w deo09ov his 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 shouldwmn/jwo 2q:i 7

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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 add , zfz10d*rym r(wgbm/3 ov6xpition 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 properl7nbvs3iki d c0:d8 eo-y placing an ammeter in a circuit consisting of obo-k8d is0n:evc d37ine 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 a23ge *a +eq tl rddv.mdhj)/(:a/ltvn mmeter'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 normally w vlea oj853oq4n79mfq ould

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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 resi3; hy:/inx fyastance

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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 voltmet +dnq6ta bk why1p9:.6zmpfz)m *byl) er across a resistor. What happens to the total current flowing in the circuit as a result offq 6btz* 6hap9.lzw )mdpnm+k) y: 1yb 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 voltmeter is 48s fdn ds/tb/placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one c/sbn4/t fds8domputes 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 ishd 9zh fe s7 qk6,ru-swcq0s+- 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 reading, the value obtaineds0qs-wdheuc-fhr s9k76+ z , q

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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, 3denj200b.le jy +nsqs)q.gl (.0, 5.0, and 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, t km/6(jf hsd;gld qok:,5(cs 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 12, 12,.d*7nc2ih wg.;wy-)m)8v aofy dz rgi ay3 7xw 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 sc cd 2,phutvg.ckp:c4h4p, w 1eries 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 3.0vz9 l/fgtef mos9m :2x1ep5k 8 $\Omega$ 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 parall.b -ragnj5-.ty3kgvu el 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 combinatidjnz z5 mdr xm:s( nljz6*z/**ep)0hs on 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 combination ou)6 uibvcylj v3c; ,6jf 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 circuit: 1200-W toastet) h2:ga. .- 9tn4kcz 3genz fuafn6xwr, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they dah.tf9cn wez3g)2txf4 :za n -kg .nu6raw?

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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 yoowddeyhl i6)c q ;1x6g5.r b,fu can connect in parallel in a 120-V circuit without tripping a 25;ie hw.xddb) o6,6yglqc1rf0-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 2.0snd . lejn13op.(1tvp $\Omega$ 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 j ba7cnj ye w q9ai2*96;gt1vgand 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, and 10.0, o-ily. ayif0 $\Omega$ 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.f5hiy+e3cet**q wmo ;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 ;oo5d/ /xirq,ks3q a d9.0 $\Omega$ 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 sgq2ahn*g q-)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 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 vnib/kr3(uq mdt a0riit;f)0 :-: zj lcircuit 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 ulb f67fs;mg4 u;i+poq o1zmsk v68u5$R_2$, 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 fk2g mq5hjb( b23)ntc 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, determin pii0 7l +vg/(xiacot.e 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, deter/pc3m l,jz2 dmmine 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. 10 a8h2(huv rqn9-4, determine 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 point C in Fig. jn2lnm*( txu)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 rela v:ii44ek0zzd-.-r r3 tzfukktive 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 oe lmdp+* d11chf 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 battery in Fig. 19-5-6 0esxjl/owesq8duf 49r b6d :r iu+s?


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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 po/hquyxqmp)g 3 m q3)h3int 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 i hb(2of)poex.iq 9 q )zqgx6e(n 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 ir cdri6s9/k ,un 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 the r t979u bo91m+xihigs4 $\Omega$ 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 idt)r j6dj1c;. wdtrk3n the 12 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows ijenfn1q3**p g 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 wire connecting the uppert6n)a:px1c tk )6b ayk+3q yeb left and lower left corners?k 3 ace):y6nx) q tkap6y+b1tb

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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 equivalent capacitanc xy10xcmh xb/t1qb ( cap/cp.luqu 7 7fv*+*nce of this combination isx1 +yc tqaub0xuf v7chb/ np*7l mx(c.*pq/c1

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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 capacik q*5f vmii( ,s;f7jrwtors are connected in series across a 12.0-V battery. How much charge is st 57fjwr*misf ;(,qvkiored 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 series across a 12.0yj+m w ti,,* en.ol:/yx)wwo7cmne: x-V battery. /,+y:xy*,cem7iwxen oj )nww l. t :omWhat is the potential difference across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capajnv z,x/h.n,e citor are connected in series across a 3.0-V battery. What is the voltage acrnehxjv.,/, nzoss 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 levr inla(sc9/8v :-a across a 3.0-V battery. What is the voltage across the 2.0-mF capacitoa8v-/:9es i( vnr allcr?

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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 paralmjk:+bfp0of7o* .m9v9 x9bhml 8hs zllel across a 24-V battery. How much energy is stored in this combination when j*l :kvh0 m7mo+bhs fbx9p9m9lz o.8fthe 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 wbr4r3k6u0 q jzpfm9.ehc7h9connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of tukbcr hwh4rpfqj06.9m9 ez37his 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 combinatiwgpkh gj((-ugc22+kson is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capak+ 2 whc(g(g u-kpjs2gcitance?

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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.ssw(h * ezo8 5nosb gfnwh);-800 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.;o(5-hsow sn8wbs z*eh8)gn f00-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 10pg0*ie wdgh jsh ;8mmF are connected in parallel. The combination ise10gp * jid;m80shwh g then 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 tupbb7g,o5f .y+;vf,,h oh/ 0iabh /ss xyq5jhhrough 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 anyg5-; e vmo) uy bs)et47/tsvld 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-*xpa1q6 +:wcauk lc9gmF capacitor. The capacitor is initially uncharged. Thxu1laq+9 6: *ccgwpkae 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 connkoy2xb t g 9(mrecpi cfo71005ected in series with a 3t7ocrx19bkme2y c00 (pg o5if.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 resid nf6bi(6v d24g u45wck9;kxleh 0m9myop.phstance 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 2v-fb1om ; )vf)oim)a ( m7lqng9qrij04.0 $\Omega$. 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 res tgeq/g;js8 h/wo /l9y.zvm- bmt3a9 nistance 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 resista5n a 5fiw*i0qfnce 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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