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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 et4dnz2 r )-orouy-s+between the terminals of a battery, when no current flows to an external circuit, i-)yet2ru4 sn zrodo +-s 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 tf3u,i r ;us if 4)sxdjdz.8*gehe terminals of a battery, when current flows to an external circz;j)i*f.f esxg di u3d8 4sr,uuit, 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 connected in series iqq7) kvl3l.hl0w mzwriwzr 3t .9(t9 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 /c+zwc zq :e;c v +kaau0j:fb5in series,

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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 sey;k(aek 8yn8i,ts 0 gnsu)h:wries to a battery. If the current of 12 A flows from the battery, how much current ss8:nk;,8u khe )(ay0gtiwynflows 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 s*5 8ujzfixay-h n.iqy7/ j 62nn(batweries to a 12-V battery. What is the voltage across any one of the- *f5jnn ( n6zia wy.b7h ajiyuxt/82q 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 seriegf5imzs) wt/+ /ligjh uaq078 s to a constant voltage source, the power supfj w0/g 5tu8m7iigqh a) lzs/+plied 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 resistorw bqhwf1+ xm0u:2x2y us 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, ; :xjgy3vdm7x we can be certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a 12- h8qwhc9j far33 pue4-V battery. What is the voltage of any one of the resqj ph4wcfr-83au9eh 3istors?

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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 parallslsqq8q ,.6f)mpdd+kg (sxq8 el to a battery. If the current of 12 A flows from the battery, how( spfd8x.g,+ m86)lqs q qqkds 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 lawuap f20, +og/y,fweights are connected in parallel. What happens if one lamp burnwoy0ffu2,a+ wa egp/,s out? (Assume negligible 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 powerpactpw 5tw1 ka;7q1xpsi2))r s i1t)) spt2 apw;rxcwkap5q1 7upplied by 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 identicamtxhn 995 lq3vjl1vdj78s whwr/c)i*l resistors, each 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 these7q5lh s1)j d93th9 nw /xl vrwcj*vi8m 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 junctiocb;1) 3caoda4 zg,spq90fqr un 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 rulee-6o7u tm tgv.etqee;3.lt8p.
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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 exampn s4h8v7 fd2zq9qit;x) * grtale of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction rule is an exam ude ll*a4cj o,q8t 8nyn.:mq.ple 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 cij)-uflpxw y*v-h3n /z rcuit shown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in spze7 gvgc 0 8.s eiy)xzooz+g69 --isleries ("+" to "-" to "+" to "-"), and place them in a circuit, the combination will 8g-syic-7es z o . ozz69igpv+)g 0elxprovide

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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 qvs.(g ;8 bvmrhj8g;a"-" to "-" to "+"), and place them in a;8; v( gashgmq.8rjbv 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 storag j/ls rvg*o9,de batteries together in parallel, and place them in a circuit, the combinati9, l*o grvdsj/on 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 capaciixc8/:l /jx 6v f(di.wm8fj0. bhxxqs;)bsmitors 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, tv vjfopb3f7fy;4o qysqp7 )6:he equivalent capacitance of the combin3ypoyfof76 sfpbj 7 q: 4v;v)qation increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacs- abk,apc83 zs+ t)jsitors are connected in series to a battery. If a total charge+8zjk- sapbs 3,t ca)s 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 capaci ;m8 ;q 6/cl rzwze0w+ju n2l/aobkah(tors 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 capacitp.80q;e ec *58vd mz brv,zlnyors are connected in parallel, the equivalent capacitance of the combination increa n edcqzm. ,b*p8v; ye58zrl0vses.

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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 paralluv lp7yd-py/e *uu ;x:el to a battery. If a total charge of Q flows from the battery, how much charge does each capac: uyyuevlx -du/p p*7;itor 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 quantityj2q +w0ti rcr(cfg4o( 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 at6wgm:6z jms kvy8csh9*hi)- nd z ()sn ideal battery of constant terminal voltage. At the moment co) cswhzt(mi8: njz9sm-yk6h6 v*s)dgntact is made 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 in se5kfvmx r0y,0vd (e4 mf+ ei,sories to an ideal battery of constak,, 4ex mye(f 0s v5vrid0mof+nt terminal voltage. 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 capacitor are connected in series to an ideal battery opft5+asy )q.j3 1e)d l+8 v k5ncn2dlxhdx9pef constant terminal voltage. When this system reaches its steady-state, tplc5edy x+5 qne)pv ks +l.8a)1dd29 nhftxj3 he 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 shouf3 wz; v2)s ebqm0*rwxld

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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 ;f8-sial hw 4gthe 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 propq2.*pknfxer6 tp(r gd:e vf,0erly placing an ammeter in a circuit consisting of one resistor and one battery. As a dx 6k trnpp*eq2g.er f0(f:,v 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 amme5.blwun018 9uwdvjju ter'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 galvanomx a8kh42ba bk .0cf uh0jmimg3 /vew p2;xb3+qeter, 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 voltm4g0j j2ouknaf2y 74t9jd u7ayeter'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 reso50ds -h53 w8bdd xbauc:lq n /k*m;chistor. What happenlsm;b8dw5dc5-0u dc* x n/aqh3h k bo:s to the 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 ammeter, anjkraxzfd p70+3 9pq 8, w1(cen-uwutnd 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 reading09,1rk7 j-wxunu3 (ecfwdanp qz+8tp 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 ammeterss kj46t 26mkx, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value xk 6t4j 2ksms6of 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, and 4.0sj+e(sa f4,n y $\Omega$ 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, andyz z2 sng ya7qdoi u.tg,z;0z0yz+l5/ 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, 12,0ft9. bbb)zqagy :9o a and 6.0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combinaty/lv5rz5; mf tion of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combination of8bbe9 te9o ce- 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 co *8bguircxn f9g*00ywmbination 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 combination of7xrrozhl )a)ib*s3y t+ .dz* s 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 paral kd oxf*(fdbof -43ijhu*-*g h1xqssa6 2a)cflel 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 appliances5+*f u/ gn r5liu6)*gdcz jl5+yit rhw are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 6j55 lzcdu gut w ii+yf5g*/ r6l*)rh+n00-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 connect in parallelx n )fd/acbb;; in a 120-V circuit witdb c/)f ba;x;nhout tripping 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 xv q3b9hhpl662v )dlw e(gwa; $\Omega$ 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 a4sap7k2p-cpgf h/e9b2 gw6 n78dsxk cnd 30 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, afb) )seaum3ky g wj*;zn1f 02u85bnlsnd 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 5.0u:,iq)t)90qfhb3cnce *v0ryxf g rq 8 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 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 aq 3f:) 9mtjbpbnd 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 ao,8zvrh,0m u.o(lp ggk a lz(,nd 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. 19-2? os(d3spxzf 1+qh3t3; c+l evew w t9p*


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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 throughp o tnqhz6b1/30n8hwh urq0lt(0*g0qd- nlh m $R_2$, 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 resisbhqnz3hg yqgayim c859 *l/ 9:tance 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 f r.wwpaj:9*u : ,d0da-datqrcurrent 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, determi-en:i8c 5a gskne 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, determine the current in tenq25ci 1qq,,cezf m1i1:fw yvnpb3 6he 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 p ;ibybf7 2x*sdoint 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 tgg : tnf0cp;7 ze; s1qnj6nob:o 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 poqu 8k-n-rum (emerj7d/lj/i/ b;:vwoint C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from the battery kz8a6sbih6rbp xv6e5z 5 1p dxl80a/f 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 53(eysjx 6 lusfrom 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 current7s9cr ztbv8-z 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.xc5b+ma 3a5zfcnq.w 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 izngx r/b64zua o.86wtn 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 wb f tq1qxp3ok- 7+2;qsvr5ss $\Omega$ 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 18 4un-j/r 2pi4xlotpu8$\Omega$ 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 and low +oc6da;m4*q rgwqyfb2o (;vaer left cornar+ 4;do(oy* qg;aqwm bvf6c2ers?

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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.t 6/riuforp s terr 867dhv64: The equivalent capacitance of this combinati 6dto ru46e pr8:/i rfrh7vs6ton 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 capacitorsa 8g +l a*z3nu6uu,soa are connected in series across a 12.0-V battery. How much charge is o6lusa + 3zagn,*a8u ustored 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 serhd;-gx63uxsfrv f3wj 3di0eib*83 f*f zik7xies across a 12.0-V battery. What is the potential differenc8gdfixbff uf30ds; xr6 j3 *wi-3*ivhkxz73 ee 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.j59daaz mb8/d0-V battery. Wha9a8bz 5a jmd/dt 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 in seo ku( h*wf/urn-0w7hsries across a 3.0-V battery. What is the voltah(u/hrk*w f -u wons70ge 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 3.0 mF c a5e3q v bcbb8 3cm99bv7sg, ay68dlhiapacitors are connected in parallel across a 24-V battery. How much energy is stored in this combination when 9y m573a aib,6 38b8ebdvclqbg h vs9cthe 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 m/;qwb zlbqv(1hf r s0-F are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What q;0(brfwlh vs-b/qz 1 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 com.s6w1 bs-mebmy0 hp* ibination is then connected in series with a 12.0-V battery and a 14.0-mF capa e mpms0-hbb.1w *6ysicitor. 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 connected in parallel. The cgv(- tmzf4 kt2nz*x4cf x )7jaombination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-m2z4)x*kg (j f47-ztxnvmcaftF 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 parallel. The cokwr bvc9wi , o2pm(40tmbination i w mok2p0, vb9(ciwrt4s then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across the 6.00-mF capacitor?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged through *no7jzaj hxagw1fw4 1721wcz 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 charg7zr8 d 9.p.wc tfpsl1eed 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-mF capacitor. 278iurdnb)mw.v3 h;no0rozu d3us9 tThe capacitor is initially uncharged. The RC combinau.so r 8 )wb9ozt3u2um ndnvd7;30r hition 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. l.vgnuv1z(/gkwo7+g;ltgf +It is then connected in series with a 3.0 t g(g+;vv/ unz.owgl1fg +l7k $M\Omega$ 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 of4rwee;u ;)k9/ )npykzjhu6 rw 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(mi ome*1w6+f 4lkj hb 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 rezr9 /9i jtpya7sistance 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 mbhdlv d) ji 499/(2lqlll/blof 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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