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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,yn xnzpu 8f/,/ when no current flows to an external circuit, is referru8 p/nf y/zn,xed 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 akuwbwg h3+4nt smu,:/b/7ibm battery, when current flows to an external cw h3m7b/ +k:mwtb ug4,/nsbuiircuit, 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 cwh7acnp1g/ qn l5+;bixe)5v ow r ;7szonnected 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 ser* 26jyah,w e;jbup-j ries,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resisto;m p4;n:mzp3yzb9 xxd rs are connected in series to a battery. If the current of 12 A flows from the battery pmnzd3b;px zx;9m4y:, 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 12px+bww; y*d gdul :o,7-V battery. What is the voltage across any one of the resistdpg7ul*dx: w w+oy,;bors?

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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 ikq;(m +kuphvq 0w6s )hn series to a constant voltage source, the power supplied by the sou6u+k ;h qqh( spw)mvk0rce

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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 el3y 6r e/k+5nk .nnjgto 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 -q477izbw/qjdu a4q /i cz ms8can 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 azw 9prg v,uc.6re connected in parallel to a 12-V battery. What is the vo rw.9z,pg6cuvltage 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 resisto-qb30yslwespo/sis8qj sc8-bo3 0 c;rs are connected in parallel to a battery. If the current of 12 Als jos0p qi-cswbo3s0y ;83 8q-/sbec flows 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 Chrw5.jces-. r/z cmw j40ex.scc istmas tree lights are connected in parallel. What happens if jc5 scr exces0 jw-z ...m/4cwone lamp burns 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, thfk:8* iw k.xva4wq0m)p4 nfpze power suppliex*ifpk:pkf 4 w vmqn. )08waz4d 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 identical resistors, each of resistaf;yls.a7*ty*q fuu( mnce R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parall mqu.y(as;y*7 *ltfuf el 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 ju,3 d6thzqnrgij/8/dz8fnw2a4 zk 6 wwnction 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 rubms1 /o9a0dtjetw-o5g.7 re6a nbs+ble.
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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 acl8ohk c5bw2 7n 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 is an examp(chhb ag19s/ule 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 l6jgyiet8 (yekl+q 38l -ja+s 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 identical storage batteries together in series ("+" q3 5cafbze*g(to "-" to "+" to "-"), and plazc e3f5*qbg( ace them 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 sp c9b (,z0 .iqoe keh,kom5ir3torage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combinatio5e,mqio9,bpc0.koie z r (h k3n 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 pn. 6bqyvn ru2a-d56 hiarallel, and place them in a ciriv.b -ndh6y6u5aqn 2rcuit, the combination will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connecte/) d4r vjl.krpd 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 capac89;q-k n4vej wojxh q:itors are connected in series, the equivalent capacitance of the combinatio; no qx4kwjq9hj8ve :-n 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 bat6dej.ij :dh+ stery. If a total charge of Q flows from the battery, how much charge doehie:s 6d+jj. ds each capacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in parallel t9b w:+ nu sdkce:/vyv g ht83fsc6l;;wo 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 connectedooq55u o s-t02pwm7iq.me. gh in parallel, the equivalent capacitance of the combination increases07.- mwqh t5ip2moo ge5.qosu.

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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 5v qd3zn /v rx3tvg fw92knhja*r 30e,battery. If a total charge of Q flows from xkn,03enav3qg frt 3 jh /vr9w25d*vzthe battery, 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 t+*6c saix c*wphe 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 sericgt5kb4rg58sr qd u.kt4w*7l es to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acr .s* t5d4rckqr78uk4twlg5 bgoss 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 capacitormwv +w. ;;;qxvmhcj3z are connected in series to an ideal battery of constant terminal voltage. At the mo q wmm;jvw.+hv;zc ;3xment 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 ikhp+hs8d r htma::n1 3n series to an ideal battery of constant terminal voltage. When this system reachpt h8 :1h:sh+k3ndmraes 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 shoulm: k kjq-3xs4qd

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can beqr7zx4: g f.0h6m0 xz1swgslt converted 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 o1tjx 6*hua:hl btained by properly placing an ammeter in a circuit consisting of one resistor and xu ha :tl*1h6jone battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammeter'ssvkg7v )m*mwlv- 9 m(g 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 galvanometer, onp ng2bpf1 ss/+- 4yidqe 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 resi26jewgo;; /gba*tsc fstance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a voltmeter across a resistor hzoi(dcieh+0 n86p6xuf5; t fhek-,y. What happens to the total current flowing in the circuit as a resufe+huc(p0ehkfid6 56zn, t;x-ih yo8 lt 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 voltmetert.rn bb 3xe k.px(io pt*uot.i ;-7x+c is placed in parallel ac7p tto-.;o(ek+p x i*brcu.bt.ixx3nross 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, an4 c0bzc) *l+4sa6pi xwk8dhl+nw(k bkd a voltmeter is placed in parallel across the resistor only. This network is then connected to (i+kwh) nzsdl acbx*cw +4 klpb4608k 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, 3.0, 5.0,q o/ ;9jov j67c elrl2 h)d6-gvx1gkys 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, 12ng0+t :jh,f ff, 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, ann4q*9emmj eqc4h c/3mvq dig l1v *)(id 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 combination of a ti7i* ala*6jmpx1 7ow3.0 $\Omega$ 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 afci* nb bs2an;ty.5a + 8csy4h 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 paral u:.4 x+d /v*qn(6izxkzkzf enlel 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 clq0 prse(1hed8g 4e, iombination 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 comb z0j0hi-d4dkojr75 j rination 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 connect*4v nv8 g6dts7d9txi vu*tq )ced to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If *c6*vntidsxvv udt q84g97 t)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 yor3z ;0 qn.lytku can connect in parallel in a 120-V circuit without tripping a 20-A circuit brea0nty l.;kr 3zqker?

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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 da/e)tzw6xh 6.wno3o $\Omega$ 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 a,gkhn(x4g )t ttw- kzsyls34 7nd 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, and 10.0 b) aqls)r*y;d/dk )rp $\Omega$ 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 91s5 p1 l1:) orl:q dtcmplz+ur.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 and 9.0 kzgy6c+gq20mi6r3: bzfb4 s n$\Omega$ 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 omrg 4 zh-,3kp4zaxn(and 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 9.0 $\Omega$ resistor?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.0 $\Omega$ resistor is connected in parallel with a 6.0 $\Omega$ resistor. This combination is connected in series with a 4.0 $\Omega$ resistor. The resistors are connected to a 12-volt battery. How much power is dissipated in the 3.0 $\Omega$ resistor?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the circuit in Fig. 1/4y2 z3x:-gl oony k ty+/rsph hv4i8m9-2?


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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 through gd-+xl ur: q/x3pfzoz;l6nzm o9si75$R_2$, 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 circuit in Fig. )y:f d6;i fceq19-3?


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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 Fiz8u9 t-i;)uog, +3jmrkh 0illn2tycy g. 19-4, determine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine-9qdxj vc0+ i7zcbbk -y.f3 sx :c:ixa 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 currede*)vf f4 s6cent 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 remtr2 npsv+d x)3zz:e:lative 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 C in Fig. 19-9w8tm;n/*vzk melv* kj3a hg 45?


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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 relativpcyexj es/ie6r8d +.1e 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 battery in iqd5ocs 5jg11 x su/6oj.hk a47ai0,ydavdn0Fig. 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 -ag9(yn,tfb cpoint 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 currenfyc5)l/u6ra y m ug80it 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 the *iijpw,3nssyn n 19 ir6tvl67 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,:dx+)nj 6eak )hmp2lpk.ssr 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 12pf0v xsli 0ul)c9wy+- $\Omega$ 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 1n(xyk tb9/4bmg e :*n yl*sxv18 $\Omega$ 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 tg ioff/zke mic0ei,2jh k:33 ,he solid wire connecting the upper left and lower left co 0iij,kef/fk:3 ,g2oz3e cmh irners?

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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 16 mF capacitors are connected in series. The eq c)ep1v142dmnxhoh; luivalent capacitance of this combinationndem4xlvc21 hoh; p) 1 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 y: 3/asq5okrp umf 1m3in series across a 12.0-V battery. How much charge is stored in the 5.05q :sar3po ym3mf/ uk10-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 mkt;6csz 3wq/a) mc s9series across a 12.0-V battery. What wqa;k z/s 3scc 6tm9)mis the potential difference 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 capa1jt6or6af3;jh h b du*2km:zy citor are connected in series across a 3.0-V battery. j3;yzoh:*fk6t 61jra b2 hm ud What 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 series across a 3.0-V jlvs,utisd8 m3qr f -8 y::1 zhu3)mupbattery. lvq8u i1 3z-8rpfyhs u 3,:)mjt dmu:s What 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 3.0 mF capacitors are connected in parallel acr2+as-i;uox h:da si0 noss a 24-V battery. How much energy is stored in this combination when the capacitors ar0:dnh2aos- ; ixui +sae 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 thi3b7y.xwhubn5 7 e pb;en connected in series with a 30-mF capacitor. What is the equivale7bhpbe537x biyw ;nu.nt 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 parzn lqn0/zs;g r).7oh y8wnp3j allel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacita8j no0rp;n7 .ghsznq3 yl/zw)nce?

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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 combin vjt: dht;0rx3(hv/ zyation is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is v v/dht zyr(0j3xht;: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 co3yz 4q: vwbs8jnnected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. 83by:qzs4w vj 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 t(3psx). xck 60uxa ufmw l4+vtm9fwp.hrough 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 12 0a x4kypqo2)wx/i,qfk3/ji lq7 b s7e 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 serh )/* y4b9vgqt7fardww4xl i; ies with a 0.50-mF capacitor. The capacitor is initi4w/tawdfy7 49* ;gl h)ixqvbr ally 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 jx 05sto/h 9pa6.0-V. It is then connected in series with a 3.5oaj9 xsht/0p 0 $M\Omega$ resistor and connected to a 12-V battery. How long after being connected to the battery will the voltage across the capacitor be 9.0 V?

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99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistatla 0 ru.(vn.o)hsydmyfr . -)nce 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 coil with ip5pmq :09y9y.qczmiz h3-wo 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 internalfu3yh2v7 md+l 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 40.d vdhc5qai4r . 5j;zf+o/ou )s0 $\Omega$ 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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