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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 tejxkw/4 zw0/+ 6yatdmjsm-xz+c : q: hprminals of a battery, when no current flows to an external circuit, ixzz/:w:pt0 hqj m ma6/djx-k +c+s4wys 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 )yx v-mpyl 2a)a battery, when current flows to an external circuit, is referred vpma)2xlyy)- 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 batterkb 5bdz-yw2 6gy

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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 serp 5jcdjxzl5of3 +vc km ro, rcj27:3;mze48npies,

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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 batteryuj vb.;r/vp0 lz*,tre . If the current of 12 A flows from the battery, v pzbt/ uvrl,*0; er.jhow 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 batter.neme/mcm57w rfn - q/h1s.zky. What is the voltage across any one of nm-emsfnqc k/.w.eh7z 1 /5mrthe 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, th ;gi8ymwoh8ce,.*wmcan ; e8u e power supplied by the e.*yum8mh;i,8c g8n ;wwcoae 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 wnl,sn + *vr.sin parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parallel, we caf m37rug ;cze6ib8jf3n 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 parallel9ukob sv7i/e+ to a 12-V battery. What is the voltage 7sb+kveoiu 9 /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 b 5k9 /oudku0mn7v71sk5g70ibab nyifattery. If the current of 12 A flsu/5kn0km97iif7 nd 7 y1 bu5vbao 0kgows from the 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 ofnzq (zry8r *2zydg7 f,q thewq85m: 2b Christmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume nt,w:g2 q hb (zym72rz f ry8q8qe5zdn*egligible 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 voltage sourc,e.bc tz ; ukz )pq+yz,;anc2te, the power supplied zc+ c2pzyt.k),ub;z,n;aqetby 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 identic0t.:wy 5s5k*4 h3cf crjl vadsal resistors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors awr 4yjt5.v ad :5ksccf*s l0h3re 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 juncf7k8 -2jpeg-oie y4nation 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 loopvm* qz/d ot+p( 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 jtg6 q9 +7/tub* jfjdwis an example of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction rule isk/rf0b vh +mhi9;40:u p-c7 v0pbu .zcnkm fwd an 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 ; jiezk66/ ddyhere is valid 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 id-qfl(( a3 u5idfct9s j:cl9 c)brhilew7w7r0entical storage batteries together in series ("+" to "-" to "+" to "-"), and place trfw: celiiu7 )7c (jqd90lr la(-sbf wh5t39chem 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 battex80/)+ fzkpcj-e7 )gi np j z(ysyau+hries together in series ("+" to "-" to "-" to "+"), anda n/7hy)xs egpfyzpci0( j+uk- z+8 j) 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 together in parallel, and pj*y/ avhn +vce7i 8r7blace them in a circuit, the+hyv78jba v/r *7n iec 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 connected in series tox (pk+q;wnb0e 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 cq xu ogai6k 5loa x2y8k*d**5equivalent capacitance of the combination increa6y5xxag5ickldo a*u 8k*o 2q*ses.

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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. +xsu5i6kf e/xi y*3xtIf a total charge of Q flows from the 65xi uefty+s/ki* xx 3battery, 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 caprlk9t fo5.aex(x35 js acitors are connected 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 connec xx1 xis0he8mdz,) gu6ted in parallel, the equivalent capacitance of the combinatx dgze i)60muxx1h,8 sion 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 co8 j o2 mrbv-+9n8nhcfennected in parallel to a battery. If a total charge of Q flows from the battery, how much c2bnj8+r8 chve-f9o n mharge 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 quantity 2 o4a,:ckf0ovf,6xn /lh ux t 5gn,nfeRC?

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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 consts;qr9e .*5biwp xryf))kawr8 ant terminal voltage. At the moment contact is )rqkr .sy*9;ia b5r ew8 p)fxwmade 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 inuosp g,tx) 0+p series to an ideal battery of constant terminal voltage. At the moment cont+spx)g,toup 0 act 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 u4*-wwr-xca lan ideal battery of constant terminal voltage. When this system reaches its steady-statea-wxcr4 l*-wu, 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 aivon-(g)wf+ uld

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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 a7 vzw-oe6vf/h :0tcwzddition of a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obtained by properly placing an ammeter in a circuit coc(5f.w wg 6 z5 jir ;blgjzb/7*zh:szhnsisting of one resistor and one battery. As a result, hz5 7g*il w6w5z:zfb z/(j.;bcrghsj

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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 ammeter's shunt rev 6 z2p luy3gtq4g-f7hsistance

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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 galvanometer6 +kivi u+qr(ojwbb2+ , 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 series resi+ grm)ypy*na6c2 k xi(stance

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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 6sv,cgpffi ( qb,6 ykur7r-.uvoltmeter across a resistor. What happens to the.y , (ub-pk6ff vsr,r7icg6qu total 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 amment z/ yorm z8e0y5b7q8v bzxnx)dc++ 2ter, 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 reading by the ammeter reading, the value obtaie nx7xy 8o/yq)mbnrz2 z +0c+t85 zbdvned

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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 ammeter93e8g tdbm7 ge, and a voltmeter is placed in parall9bme t3 87dggeel 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 dm2+ibbb5 *uu.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, 12 dww/wg)n; e8r, 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, and 6.ug s-mux no 1-mg12:qh0 $\Omega$ 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 ig0 ,5 wlmcweby53vnxu)4f + c/-ajsq fnto a series combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a3yozi/aeoi g5c+)ncllqd:*ot6+q9-yz -h xq series combination 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 combi6/ fvu cy2//0a mvbjuenation 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 int q1f zo o p-og32:lheq5stvx.9o a parallel 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 coeghn6a0 n9 3hombination 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 p-lvkt4)* .ke qtx.e jm)j31/ gx tsrbconnected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were.jt1ke3e tk.j *pq)r m tb4 s/)gxlv-x 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 numberbvxj(kkr031/ g0s e y8uwtf( d of 100-W light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A circuiyf(0(vw k0/gks3 rb 8x tuj1det 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 zo gei+:7p bj1$\Omega$ resistor connected in series with 4.0 $\Omega$ resistor is connected in parallel with a 3.0 $\Omega$ resistor. What is the equivalent resistance?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two 4.0 $\Omega$ resistors are connected in parallel, and this combination is connected in series with
3.1 W. What is the effective resistance of this combination?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0 $\Omega$ resistor is in series with a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What is the equivalent resistance of this combination?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 15 and 30 xh .mhl. lh9 9guht1hpoki w ()36q2ni$\Omega$ 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 4.08ep0 c j8cf9y ).sjqxt, 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 andx)bfj.uk8q,jln)du, p8 s(l r 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 5.0uwmr vyhl:7s1e1.wma0l*bn; and 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 5.0 $\Omega$ resistor?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9.0-zy1 gz scnd/74j lytfu*018in ri u;c $\Omega$ 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 id3niyg4 7 hc.eh6 k*tnn 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 througyhhk*( /b -rb 1p-cxc h:aae/eh $R_2$, 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 cis:hq j/m6t8m yrcuit 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, j0-hmjhea2f0+ u6t 1i q,bpfudetermine 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.r,g6cp4 pi o(c1 wa:fq 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.yc-v wqq* q-nwnc-(z/cbs8. i 19-4, 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.r u:y3wm.87 6xtftwzh. rm)mh 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 Fzjmc:n v 5f,g qt49a0i gtlg2;ig. 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 potentialm- 4ma/q kalm6*3jjk u of point D relative to point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from the qzz3ed5 i /uy4dg3ty3battery 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 uzblxt 40f-j 5cr/e/ rto 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 current5 73-5jonsji wnypw )o 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 the9mvs14 v yv2/ppcn8 gd2kww:bnz 7c/ i 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 currentvodu.x)f47-pr twl f 8 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 the 12 c0o4g d;x j3ri$\Omega$ 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 a3 t-3 n pg:mio99bno; 0srvtc18 $\Omega$ 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 thesz4 dz6c( +8mgxj6,o, wejjssqo0o k, solid wire connecting the upper left and lower left corn 48+,c,(g skwjzooze jj,s q6xs06dmo 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 conn* o k58uxsqmfxr 192omected in series. The equivalent capacitance of this combination f r xs9 5x2oq*koum1m8is

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected i2-1g)a xwyb vkn series across a 12.0-V battery.wg)1 bk -2vaxy 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 cabw4(vsk9 r5bhqd-i( kpacitors are connected in series across a 12.0-V battery. What is the potential difference acrosbkr9 q-d5(w ihb4vk(ss 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 capacitolcj5fqe )p ra 3vm*(;nr are connected in series across a 3.0-V battery. What is the v5jpemlca)v( q*f nr3;oltage across the 1.0-mF capacitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor arvic tqa.i(wp kq/l 39bp)t:,a e connected in series across a 3.0-V battery. What :i ,wv qttila9k3.b()ac /qpp is the voltage across the 2.0-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 ,;oi,ss k3 +zrz6nd(zapx:yt.0 mF capacitors are connected in parallel across a 24-V battery. How much energy is stored in this c:r6zyoa ,xs(p nzst,3dzi+k ;ombination 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 2py7dac ;n6+p g 5+m*qm; lczbvvrk2d /0 mF are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. W kz57bmd;mgca pv6y/l+2p r n;+*dqcvhat 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 conne0;1o:atpmd rq cted in parallel. The combination is then connected in series with a 12.0-V battery and a 14.;o1tpq0:dr ma0-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 ,zpflqr(l,:x) sm3jlt-gd/ l connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.f/drt g,q)s:m l-zl(xl3 ,pjl0-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 paraqkp;i-tb6 i ;m4yjft *llel. The combination is then connecteb f;qkj-46t*;pi imyt d 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 chszve,o 2 sh1o0arged through a 50 $k\Omega$ resistor. How long does it take for the capacitor to reach 90% of full charge?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is d 2yu+u i7yp:lcharged 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-ma (lrs3 0tfqh0lkw e4+2fi tr4F capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9t 4 a esr0lw4ql3ftri20h+f(k.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-en0lqh, 9vjtks ,vz9bvcm/: connected in series with a 3.0v,m- qt0sk9zcn b,h j: 9evvl/ $M\Omega$ 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 internalxvpe t 6hryhy0ko461+ 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 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 a7y, itpf d6kn8 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 reb b7v2*a i32x6t ztwicsistance 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 ofql;drqra wx-bep0dw8 ;+89 a )2s svws 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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