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习题练习：Physics Unit19: DC Circuits
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 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 the terminals of a battery, when no current flok y;j bg*:vk e0e7 me2/;pzmnsws to an external circuit, is referred to as7kjb *:;;nemp z0eg v2/ mkesy the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential differencek1hwxj jg5 j/q2 mjra8 5l0:kq between the terminals of a battery, when current flows to an external: 20kg j55/rkh8 axqj1mjqlw j circuit, is referred 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 connecr3n/v h8wiv,6jde xpba9n9v46umm c -ted 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 series,lze1 0autv) dz9;xtu4

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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. i7y 7 -hsck;r1(hda gup.tsukco2)c: If the current of 12 A flows from the battery, how much currgsu-to sha.7dk7 :cpc(r)y1kuic2 h;ent 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)ncbo4-bf ct r*d o b84d2o7jo a 12-V battery. What is the voltage acrossno8) 7rbb4fcobc otd o2-4j*d 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 co rgui;x uv+s44nstant voltage source, the power supplied by the sou;4ruvui + sx4grce

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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 to a batrxm9 n n53d tzff(3-z4g(bswvtery,

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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 be ce,)i ap6/6vt1ab u w1hyz 9klugrtain 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 co utnw bv:wp)g6i/3 0lie6q eqz/g);dmnnected in parallel to a 12-V battery. What is the voltagp 6q nv;m)3t/wdbl0ei/g eg wiuz:q6 )e 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 battery. If the currv1r+c h)rr p.nent of 12 A flowrv1.rc hpn) r+s 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 of Christmas tree lights are connected in parallel.6 frqg3lwj2 r. What happens if one lamp burns out? (Assume negligible resistance in the wires leadin23rj lw. r6qfgg 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 added7 psfn:5 uk;1,wc*us smlnjei*6x g9i in parallel to a constant voltage source, the power supplied by the s: n;1gfsw9*ucs6* k m5ilujn p,se7x iource

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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, ea w) :fhdu3p))rbdg9kgch of resistance R. The maximum 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 ma)hp dr )g)u3wdg fk9:bximum 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 junction rudv w,y)r(r -jtle.
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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 rqnr/yl mwf)x hx:1-n: ule.
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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 *xmav yxg;gaj q7 ,.us.vwwdlbh0110e wc(+s 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 rulew my s/*9f:(e)uix2jbqtn 6dk is 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 valid for the cir4uj)ylvk cd+*3 naq1uradd1a g8) 2fzcuit 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 batterie e/mosy wg )97afb :qq4(qfms:s together in series ("+" to "-" to "+" to "-"), and place them in ag m:bqq:fm y7a/o 9s)we fqs(4 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 "-"vhuegq wy5:o72 *8pg b to "-"o 2ug hy*gb w5eq8:v7p to "+"), and 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 tos8zr7gx m)s11 +u ay ;cr6.qtcxk qvt+gether in parallel, and place them in a circuit, the combination will providqr+u6a yms+tzgkr 7)c1 ts.q v xc81x;e

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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 xda0iudc* 05 ji) 1i :0zlobuhconnected 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 inf+no9+mm mrs .va w7f1 series, the equivalent capacitance m+1 orwfmv.fn7+a m 9sof the combination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in series to a battery. If aa+9zvn;4 dd is,2pwg/pfs/g r total charge of Q flows from the battery, how much charge does each capacitor c ,prp zv/g/d94 niwf;d+2gsa sarry?

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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 e gk2m)zd8z 6a6rup2 .j9im hgconnected 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 equivalent capacita6)1fn n w4 c) xasliav9t7r:uynce of the combination a)cfl a64i:nns1vrt9y x 7)wu 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. +n9gt2p:r rn7sw+cf o If a total charge of Q flows from the batte:ct+ofr2s+ n rw p9ng7ry, 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 tz+ h7c7jtk0a hw07 vjyhe 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 ,;iao, )f8t ad9jca.hnq k1cmto an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the capacitoca8 m)ci,oa1d;f9t k anjhq ,.r 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 batt0 a+ahutu /nzsxqw3 ))ery of constant terminal voltages )+hzwuu/a nqx a3)t0. 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*g ip*u( ox 4j..fpazhitor are connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the vo(o. i a xjgp4zh*puf*.ltage 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 sho47q5:dxyi0 oedheqm 7 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 c;q .,fz8-zeccnqiq,*2(.n u vpe8lv2iu pir 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 circuit conm-nc(7 b(iyl nsisting of one resistor and one battey((l - ni7nbmcry. 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 ammeter's shunt resista4-r6rb;5 n*e1ndheumn 9u qaxnce

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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 khe;+e cxozs .9,*+ensb)ce vgm6rg 5normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistanxr9b db +q-x1zh1z-ddce of a voltmeter'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 txz 8l er35kn ejnkf,5i)w d.n8 b/0igobtained by placing a voltmeter across a resistor. What happens to the total current flowing in the circuit as a result of this a en8w 8i5nfjze0b.lgkdr5t/i k3) ,nxction?

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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 ammete0prh/xv g nios t3c7c xtn7b d6t;::,er, and a voltmeter is placed in parallel acrosoxt:i/gnnxtdbv377 ,rcpt0: 6e ;c hss 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 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, an d)* mp7dk xh1(n0kzatd a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the valud7(x)1pa0 ktkdm hz*ne of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0 yoz) rh *6)h,li5vvmw, 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 u ;9cta5 oj3)5 zfmh n.4csokt6.0 $\Omega$ 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 r8rffin82xgjh:++ ylzu1w q9$\Omega$ 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 combination of a8*k9iylt98 z 8yccl wk 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 s + rwr5hmmbm*dh, l4y,qcds .:eries 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 intoc*acx6 bmq0l6 a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel 0l/3 hnse u,tgcombination 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 pardx6-tvjs8o 0cye- q5lallel 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(uwc1k *0bn 3um -wijy7 *5ja,dlln ay connected to a 120-V circuit: 1200-W toaster, 650-lm j(-7aky cw au 1n3,d5wbn0l*uji *yW coffee pot, and 600-W microwave. If all were operated at the same time what total current would they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum number of 100-W light bulbs you can connecoy1j he :e j;r7jte/- f,fto2ot in parallel in a 120-V circuit without to,-e7j1jf2/oe;yr jf:e thtoripping 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 :mndnvq l3 d(u 6i:1av$\Omega$ 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 30cv, b, 78uovvn $\Omega$ 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, 6.0jbm7vl*7oj /p , 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.nhopx ks/mq*g1m ( 5k,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 ad::xdjj 8 htx/x.;+tkgh. fevnd 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 mswt/wfk/:)fk d:y 8c9.0 $\Omega$ 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 circu3udq;wo0j- y;euy a d1it 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 throuy*atxq;rchx ;h q7 kd*ay;0e.gh $R_2$, what is $E$ in Fig. 19-2?


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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the cibaq;4t8r-7grjmmn u-rcuit 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 b 1kncd70y.yn 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 Figook)mw( p(2 0 eitpe,e. 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. 19-4, determij.ug oi* 1nc4ine 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 Fie u:/t5wsj p4ahfqp*/g. 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* k+jj*x s1bd6)tkxz l of point B relative 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. u -f x94am8v,kf5jys85q ucel 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 Fyc/q7g) f80j tnz.adeiv ms )+ig. 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 fro2j6 n3,u rp z*xysm0g;8csd mom point A to point B in Fig. 19-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 7 1po*gr s6*rs8an8 jgh$\Omega$ 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 the y1o f4y9wrp)f8 $\Omega$ 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 rhp c1e p mn-vh)sw-c2ua*8d0the 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 the7itc: nk.k;z f 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 inn9nm 7 cvffy:azx .*w0q * diyr49mk.y 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 s. b;d3-waw;s.72r j nufjid +a6x rjpaolid wire connecting the upper left and lower left cornsxu;wdinbj a6ra.afjr.3+j d7-w 2p;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 conotd2 v.eo+6p qnected in series. The equivalent capacitance of thi6.v e+todp2oq s combination 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 i 9opouk,nw6x+n series across a 12.0-V battery. How much ck+np, uwoxo96 harge 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 0,-f u8bozy2t:6vdwxu8 ghby capacitors are connected in series across a 12.0-V battery. What is the potential difference acrosgx v by2f-0 u6h:t8yz,wob8ud s 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 s7k v*wb0. as(zb6 ax6(av;rrm qbaix 4eries across a 3.0-V battery. What isamr v*xi q0xzb6s6vab. a(4b;rk w7a ( 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 connecei24sptn9+ 5w4dv 4j-swnghv ted in series across a 3.0-V battery. What is the voltage across the 2.0-mF cap 44j v w-2g5n+tnd vi9wsphes4acitor?

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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 cap1i;4- wtbhyasbfib 9;acitors are connected in parallel across a 24-V battery. f4y-bs abw9; 1i;hbit 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 this pair is thk6 zk d:z1inr doozac1, 5oj*4en connected kdc*anojzd1oz:i 5r k 4 o6z1,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 combinatiol hezk ybp kj 0y9dc8yc/51/v8n isy/9 de8ck 8v /yk5hbzp0lcy1 j then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.08tjybuh1 -0or7q nq zwyu(;qee4c +b* 0 mF are connected in parallel. The combination is then connected in series with a 12.0+ ry 1c -tenb qu zuw(*8qbjq4eoy;h70-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in pp2x;q lh17d hutv ne+.arallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage acros7+en;tlv. 1 dxuq hp2hs 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 8p h6u ;ue5bp*xaklqlvi:1bp u8;s4scharged 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 charged to 1272mfou .box ce6qy 2.o V and then discharged through a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a 0.50-mF capacitor. The camzdi8y o9dw hh5f6sn ;8f0bn 1pacitor is initially uncharged. The RC combin08shfbf5z wy; 91oi6hnnd d8mation is charged by a 9.0-V battery. What is the change in voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged to 6.0-V. It is then connected in serivr,5kf;)y6qo tuoax3n.z (vfes with a 3.0 ak6noy ;x.,5ofqvt zu)(3vfr$M\Omega$ 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 jo 2h9t4gzcloka-q ;+internal resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a 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 czjbjn,8 yz73loil 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 resist;d snzby.0a 6tance 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 ot.:az/7i ghv q0*nn, vt eshq -r+1kukf 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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