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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 tetula 4 jx+xst8m-q l+2pd;i -lrminals of a battery, when no current flows to an exter +mttjl 2 -xl dpiaq4s8u;-x+lnal 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 battery, when cuq vxfmy,y1kkqd5p .acby.,/ 5rrent flows to an external circuit, is referred to y y/k.cyq.fa dxbvkpq 5m,,51 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 a/0c ad3 c)a/qx5 9k8 j8tykrtdfko zp/re 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 s39b+5oos f xego:zeo3eries,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors aredo ucy99wu:j 3+sjao at2g 77g connected in series to a battery. If the current of 12 A flows from the battery, how much current flows through any one of twtg9ja 97oojdsuu7 +2:a cyg3he resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistow81q9vs 7uzw zx:uo; r)bvl;irs are connected in series to a 12-V battery. What is the v swr9 u;vv:z7uzbil8)x1qwo; oltage 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 series to a constant voltage sourchpg +uuvsh -vy)v+fm+ yr9n5b7 o4r(xe, the power supplied by the nyr47vh gv )+9-5(uvor hmpu bsy+f+xsource

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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 in parallel 3 ayyy)q, w8rq w)pz/-tk6tv;mkqv/ tto 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 paralfw7c4/tv0 tbenhk - h+lel, we can be certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resisvz x77msph *m(tors are connected in parallel to a 12-V battery. What is the voltageph*v(xsmmz7 7 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 connected in parallel to a baap3ei,bfbe fbs,+:xqa .w5 5httery. If the current of 12 A flows from thb.a,sh:3 p iafx5qw 5 ebf,+ebe 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 lights are con 4yri p 3ex 5sxbxv:o75hzu4x7nected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the ly 5zpixe7xr34o57: 4s vhxbuxamps.)

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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 voltagecv( kylevg+f3 m*wrrt 8d,)0. (jpqye source, the power supplied by m l*gyw0tkcde+py.) jqe ( r8(v3vr,fthe 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 maxp t*jwdr;( fc-imum power each can dissipate is P. Two of the resistors are connected in series, and a third is conn*( rfd-p t;cwjected 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 jung9gxy,a(m fexe7 q/2iw*9iuj ction 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 loibz6pa,(ztncnz1 0y )5o chy*op rule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rule is an example ofqa/mr s2+4r+h8rv ws s

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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 a4qg19i5gsx3bvk x:rtq9i/9 8bk8ih a nkfkg)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 fczucc5 4.kg5aa *yi 4kor 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 identi a6yajam */ h:1f.eqn3jyy ck0cal storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, 1ajnay.yyqf 6mce *3kh: ja0/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 idej:n:x1.b:xr-pr8 : efqh sm gbntical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in8bre mhr: bf:s-pg .:nq1jx x: 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 b ),uz7ml9 iawbatteries together in parallel, and place them in a cwm7ib) azl u9,ircuit, 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 capacitoh,ze t 7zizv4v0zyf .3rs are connected in series to a battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in series, the equiva3r/o y78q1tyeglv0 nulent capacitance of the combination increase0y e8 tq/vy3n o71rugls.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitorqbi4 g(pc ku d2m*sg)h9yw 0d2i ,7rkrs are connected in series to a battery. If a total chargeygc72i kmrrs 9)0 bdq i,d 2kph*w4ug( of Q flows from the battery, 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 connected in parallel topclow 2.,xt0w 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)rfa; 3p4p mze equivalent capacitance of the combinatiora z)m ;e3fp4pn increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitox/li pwrrhhwe3.*z z7--/9u;zqp diprs are connected in parallel to a battery. If a total charge of Q flows from the batte .wilq-r9hxp dw7;hu-pp*z/zi / 3rzery, how much charge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the 15(ai ibgxsp 2o6a7sk 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 of conszuvmo/mgk*s(wwc7m+ c0 u+3j tant terminal voltage. At the moment contact is made with the7* mvcwjc +z+km/ g3uum(wso0 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 bat 9,.a hhgd: ngpfxkzn5 q++6ggtery of constant terminal voltagenh.qg g +g+,9hpkxa g5ndz6:f. 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 capac* in0ok+xk 3veitor are connected in series to an ideal battery of constant terminal voltage. When this system reaches ei k30x vn+o*kits 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 sho:(2,. araedxdbx(gd nuld

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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 addition o d75ci xb-fv*fr6a qq9ql8.4q)s *kabn cbu6gf 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 y yzzct,wc39--s 5 lizproperly placing an ammeter in a circuit consisting of one re,lzz 3yy s-t9icz-5 wcsistor 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 ammety35f* l0 wlubxer'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 voltme 5 vkfeczrs28-ter from a galvanometer, one normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmetea+nuobm6r7vntoft j: l1: * o;bzy -;lr'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 resistor. olwch4w99 7 q7l)jc dzWhat happens to the 97whz9d4l )colj7 cwqtotal current flowing in the circuit as a result of this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, and a i-5 8kutziy7b 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 reading by58 t7iik-uyzb 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 plazgtf g u1)cbn7 *oy74eced 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 val eo cbf7g*n1gut4)zy7ue 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, :qeui0 -rua2u and 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, anxw/ 7mt/n 9jund 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, and 6.0 ,,u h3q(1h o kxqt,nih$\Omega$ 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 zw7,ywuc * /itseries 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 cn2w v.yia6 q2va7w1kc u z1st0ombination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combibgca(f( uxq7m8w xe:;nation 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 combinatik q.ykrth n pxm9*3)c/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 iq9bo b2()pyl,3-d e mxvblza, nto 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 12tjh ;mo v+dc;rr42epagj 6hj 6+09ztp 0-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current 9 opg; hr;dtj ztc 0+em4626a +pjjvrhwould 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 of1gx:hn e.;q ,cm tis z+rpp.u( 100-W light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A circuit +(ixu qt,p ;s.cm.r1n pz h:gebreaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.03q;hy 6 yfyegbe7 9 eipo0*hw; $\Omega$ 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 aw( ouqr qi0jn m3ti3d -t2ru83nd 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 4.0,9pd 3kb3keb( j 6.0, and 10.0 $\Omega$ are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0 $\Omega$ resistor, what is the current through the 10.0 $\Omega$ resistor?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9.095 e gpc5dc8nx $\Omega$ 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 9.0qqkv )jqjq..1v8ldkb vs 95x8 $\Omega$ 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 z0zk.efs3e3d 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 circuit in Fig. 19-w ;q 2voieh qk ne8gr2.:d9;fnr.0kux2?


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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 throu a c5/ t(jkz8 j7o;gbi5xwbg-zgh $R_2$, 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 .r3dou p0av0 qcircuit 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, rd:,sy7u *pw7 :ob ggddetermine 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,+kxhbs x/.r3 e jbfe4+ 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-ih8z:odpf. . r4, 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 tc3dtf6i.p 6xt 5p kr9point 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 relativech* e7is-s2+nsq7bfj 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 relative to point C in Fig. 19-5?jg;(8thgv zhj, :p(m,ob iw3p


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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 inoq7vz 8q1jwt. d.6 vi)r8 gyot 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 ahx c xlevvbd1* dl 05(6s4j-jA 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 currentx+dz-:ne rd2z 7znh5-bfj a)ev*zu*n( qe oc - in 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 in thdm +;b rs*u e;6*wtmuqe 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 0igtu1npit5 ez4r9 3p in 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 l /5yxz( j i/ch1tky6*98il r0syxjrn 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 in the s06cz)6 4yzb nblym9 m18 $\Omega$ 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 and6r:m6vv*t2c09 n;n/dgj vviywtnfwmwe s9 2. lower left cord92vtcre.6nwvg:wit2n0 wf vm *n6myv9;s j / 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 equivqfp4 e dxi)(;vz)r5iej4 mt 9ualent capacitance of this combidj v4i5(pxreue9z iq ;mt )4f)nation 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 50.0jy*pm y-8vfgzxdv0:;hfg0 b: mF capacitors are connected in series across a 12.0-V battery. How much charge is stored in thfx8 y-b;jdp *:gf0yvmh0z:g ve 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 arwi5f*00nrzwd ,t2e5f5 vh6b z ,qeqgse connected in series across a 12.0-V battery. What is the potential differen 5qb zhtef25 ,d6fv0s*nez5wgrq0 ,wice 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-V battenlti;p3n9d e x-)if, sry. What is the voltage across tx;3f it9i d)-pl,esnnhe 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 2kxt bh9to9;m kke;k3across a 3.0-V battery. What is the voltage across the 2. hokbt; ;ekxk93k9m2t0-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 connectebepq/p t21a s*d in parallel across a 24-V batteryq 2sa/t* pep1b. How 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 t7 nxpj g-qgtd3+b jg 6e2b/un4his pair is then connectug dg + xj-7peq6nt3/b2bng4j ed in series with a 30-mF capacitor. What 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 are connected in parallel. The combinai6nqp24 pvpbxx8 vx;e/vk;,eif sn 65tion is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equ x645 2n ; p 8pveevx/kvifbp6sx,i;qnivalent 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 mFvcqv y va+ 6325xkgrxia yu(.t+l7v+p are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. ygrxpq.7vc5l t3+i 2 uvavvx y+k6+a( 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 mF4sivpo lkpnp0dokx /- 7 fj .+tesui .y4yk447 and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14p .ktosekk7u.l n7i0iso+4 -yx 4vjp/dp 4f4y.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 through a 50m +ymf1xb+ a hal/1k0(xwmy4 x $k\Omega$ 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 thri mypnr w0 h7049fcd2yough 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 serie; yn48hze(tz rs with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination tz h84r; (nzyeis 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 se 4, doskizub 8tb+g;p/ries with a 3/io+t;bb dzg8s,p4u k.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 o3.5ktkp 3jkd xn a5 -o2/l;md i+bwqqresistance 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 f2r( x/ha4ph j9qfyha*s ;yb,coil with 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 an internal re/ ibb bsj -1p9u;lbp)x s3it-ssistance 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 resistanchgvi0771mphcvp (zq0 e 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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