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习题练习:Physics Unit19: DC Circuits



 作者: admin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 7u7))d rdb o/sk)x nzxu89kna the terminals of a battery, when no current flows to an external circuit,okur bz8 dux 7a n/n9))ks7xd) 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 currrz x5(l h4 wn)ik -yqbwh8a7y)ent flows to an external circuit, is referred to as thew 7w(hi 4y-8hz)anqx klb )ry5

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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 resistorir 7j/s3.kutg udzw83 s 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 connected in seriesr3lee*z ir3wrr tp, jtgp8:iuh)13p5 ,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors kklv4. sq z6e3t6o, iqq6:pbo are connected in series to a battery. If the current t 6 b6kqqql6o.zpk :v4ies3o,of 12 A flows 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-.fiy6zg+jt6(y qah /f V battery. What is the voltage across any one of t66g / .i+yyq(tfa jfhzhe 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 addedwob5ee q,qew 8z/9kda12q: go in series to a constant voltage source, the power sup2 kq9oaz,1 ow/ 8:ebewq d5gqeplied by 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 f*o/.fe tgd ujak(3.q are connected in parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parallel, we can b/1i44nulcgb ne 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 i+3ld z:8oe1t:2dm xjmon(t g9 6xebwur5q4lr n parallel to a 12-V battery. What is the voltage of 2oe6wn:r( z mx: ujqo3txe9d1 l+md8l grt4b5any 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 con.nmr:- / hc)j iqdo-rck(0vxsnected in parallel to a battery. If the current of 12 A flows from the battery, how much cuq)-jx nkrdosr vc-hi(: mc 0./rrent 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 Chr.hs js tsdm5o/ niy )1k/zq(r2istmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negli m/z1qn hsi .ok t5j2(s/r)sdygible 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 source, the pow1w cglvu7h k;(o1 *dlder supplied by the sourcldkh(;*g1 oud clv71w e

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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 maximum powe. zmhf;rs f*ow/4l;oyr 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 maximum power thislfmw fys/o .rh;4*z;o 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 junctia1o ej, a pbjcu;;(yz6*+rgmyon 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 rule.fu mbrk9cylkis5+d*95, )oban -a:uv
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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 exaz,v a-k rg tnt-- **c;rl yq1oob*ws3cmple 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 - m4tzqp:ycek6 1p5ew8w2p n 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 here is valisnx.t d-tcx+6pa m94tz3 nd :jd for the circuit shown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries togevyaqau 3iy89 )gk, z5bther in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combiyaqki vy), b93 uag8z5nation 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 stora4+hkgp g 68txyge batteries together in series ("+" to "-" to "-" to "+"), and place them in a ckyphg8x 4g6+t ircuit, 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 pyf4-(a ;q:4cm+ czv1vyvvy(4mdzfzplace them in a circuit, the combination wilmv 4yfzyc (f vqpc;4dzz(vv+y- :am41l 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 to+1guzsxrmvdgv+ q ;zl 9soy7 n8 9;s1w 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 connect3 ;t1+)cp rqzyso5ljred in series, the equivalent capacitance of the 5 yo;ztq+rp)1s3jrcl 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 series to a battery. If a totabkl,m 6q6m+cmc5)qnr l charge of Q flows from the battery, how much charge does each capacitor m6)qr ,+cnbmk5lcqm 6carry?

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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 connectedr )bu7pi03 c6jmd pa9r 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 equaa4gxz;k2ydl8b ( e7vak (2zmivalent capacitance of the(z7ke2d mxva82 aazb4g(yl;k combination increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitorlq -;cwjl mh7f6ia8 5hs are connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carry?cflwh6i87 hlq-m j;5a

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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 tdph mv)wu94 tt8h,ej;he 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 ba b1l s m26;wbf7(e m.irjur+hkttery of constant terminal voltage. At the moment contact is made with the battery, the volt.sf7k(ui;rr lbm1he j6mwb2+age 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 8vmc u b3b1f 23b7xic2 xd-lvfbattery of constant terminal voltage. At the moment contact is made with the batterm1fbcxcu32 lf8bd 2vi 7 -3xbvy, 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 a lh o-hm87+h u,,d po5udsr9gn wl7an(re connected in series to an ideal battery of constant terminal voltage. When thisd8asn+(n5h,7dw guul79h o r, mpl-ho 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 shohj9vit8y68dng k 5p d t7j6l:juld

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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 conlpy) + ilth+t,verted to an ammeter 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 properly placing an ammeter in a circui9xtk 2e8smzch *7 4cfqi ,mu7)qdxtx1t consisting of one re xh2ufc *qix9mk t7 t7x8)qe4d,z1c smsistor 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 resista;huhheb p4pw 5yf15;ance of an ammeter's shunt resistance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construct a voltmeter from a galvanomeddsm 3c 3gayj.a,o9o5ter, 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 serie 5 1puzqcf (ysg:mbu2nz;c14us 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 ob rdexp4-e ki81tained by placing a voltmeter across a resistor. What happens to the total current flowing in the circuit as a e81-r dpie4kx 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 voltmeter isn sk)j322 ou2dv 0w 4blwof/0rpvd6ni 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 k02 suf0rd/v22pn lvw4o 3i )6w bojndvalue 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 l2nq(yf dm 0+d/x dx2ian ammeter, and a voltmeter is 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 readi2 x qm fdn(+/dl2dix0yng 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,s ge*yu7t:frq*j: n i5 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, and 6.0ajo7s9 8pasi 3-pk i*n $\Omega$ 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 l+hnvbr q/ 6u 5p/kk/b6.0 $\Omega$ 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 cka(e wuyh 38c-ombination 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 in4lbx n (,-gzghto a 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 intouf 0bw w5;bjl* 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 in75mitw1 i t7an;l iy-hto 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 in79k vqo4cn zn4+tq b.xto 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 appliancz i/mtu3so- 1tes are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operatem -3tosz u1ti/d 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 4) x3,l p+lzqr tch,claljj9pv-7:uqof 100-W light bulbs you can connect in parallel in a 120-V circuit without trippingh93ccx paj+qju:lr7t -4, q,l vll)z p 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 r (k xhn11b5ljxsgnxp; h37dh e.7-f t$\Omega$ 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 d5wwhogwe7*(5icv m uph.xblc/u 55;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 4.0nx; - kzvrj*-h ,j-soj, 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 an3 8,kynza0uy vd 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 andust 9ihx*hskyq9u540 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 andg5w 1c+ybx ,iig:k: zg 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-i nn* 92hoyab02?


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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 throughxv8/dp1wp 4zc $R_2$, 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 res)k d+)c::ogl- -qxhez oht9imistance of the circuit in Fig. 19-3?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 100 \; V$, what is the voltage across $R_5$ in Fig. 19-3?


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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 4.0 \; V$, what is the current through $R_6$ in Fig. 19-3?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the current inz8b gviag:t )wogggx/k)5q : 5 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 in tzp)15o hgx q/ohe 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 curren0 j1dd52bsz kut 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 potentialpdh5 zg)oa2ua so/d4+orn;f) 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 relative to point Cu(8/h c pbfmwn(p5p bs1i+ih 8li4zx ( 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.t +lfkw sr5 tttf,q il-q7 fa**z)/yc, 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 + z61)pbh)wn(ftxrbr;o csb v( umzra512 m6iFig. 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 to point B in Fig. 19-5q(u t8bdh6t.g?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current i6x+xn8xzqa8qw c),u dq(c+c vn 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 qtf vwdo5l 77djb) - *+qml9l im(q:odin 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*4l5wz/hx;)zlp ( q.xb,eotv xskfo- 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 12opc9o su6 a2cz33p 8mb/lrvs, $\Omega$ 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 185u)p+) ozk x .jwa7np f+qj2wy $\Omega$ 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 lefttxyc47uf1 6 b 9qj50wvf2jc vu and lower left corners7buv1f0f2w5j6jx 4t q9cyu cv?

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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 mpw a8iepv i5+bo4q. 5series. The equivalent capacitance of this combinatoeiq. pvw85mp a+5bi4ion 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 mF capacitors are connected in series across a 12.0- d+; s,womsc+w8i vj0pV battery. Hwc+8;,so s+ im0p jwdvow 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 capacitors are connected in series acned ;umu d.t.z :lv8rrb*l) k8 x2c1xdross a 12.0-V battery. What is the potential difference across the 10.0-mF capaci )krl1du2 d8b;emc.8 td*vnr:x z.ulxtor?

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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. jp q:yksn.-)l0-V battery. Whatj -.s )nqp:lky is the voltage 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 are connected iny(vv +-(/ zi4uotelfg series across a 3.0-V battery. What is the voltage across the -g(v( 4oi+zfu/ley tv 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 3.0 mF capacitors are connected izq87u1i4m/bh6 p ayewn parallel across a 24-V battery. How much eneru7wea4y8/qh 61bizmp gy 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, ajrx.bx2 /, 3fp d:ucxand this pair is then connected in pba.x,/3ux df:xrc2 jseries 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 p 2p i hd78t3xrnk jxz(8r.csh1arallel. The combination is then connected in series with a 12.0-V battery and a 1( c1 8trisxpzh2 8hx7d3njkr. 4.0-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 7me1 xa odm+m-kojpp72 4cdqo .q/ j)pand 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V batteom1a qjq/ ).mmepx+ -cpjd 2koo7 74dpry 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.af v; *f2act8*(q- tnty(k/-amlpckh00 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 voltage a-(fh 8nca(tp*maq *a2-lt kfc/y vtk;cross 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 ag7hz5vv7nq4a+xm yleg 0k;d j 68rou+ 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 and8cq/1 l2yea pa 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 i6t6 .+t-e1w+madlu9 kdjfptktorc 00 n series with a 0.50-mF capacitor. The capacitor is .dle- k0tdo0+ jmfw9 1+t uctk6a6pr tinitially uncharged. The 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 condf9l tf wf *auz:+/5y2pyaz9 mnected in series with a 3./a*m2uz 5yfl y +dfw9zat:p9f0 $M\Omega$ 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 qv9z 54p-jik e;cmb-q 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 o k4/kv/n.-8pm)aiaf8duo hht ast ,r 9f 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 internn/ ey(d q020c8 slmrbji;/us ral 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 of t 6*hzgau7+pzi+; xiw5c ks81y jgw4b 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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