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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 terminalsk.j c1wv+k4uz of a battery, when no current flows to an external circuit, is referredc.4+ j1 wzvukk 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 differentj t8qs1+hrp+q(h j)6n akq, lce between the terminals of a battery, when current flows to an exterks+l +r8,t6q1) nph( thjaj qqnal 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 connected in series to a babw4 uw6krqymk6rq,vm: vl6,-ttery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connef31n g) jluzm0cted in 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 series to a battery. I zh,.z-kzy zj) eq5s2rf the current of 12 A flows from the battery, how much current flows through any one )jzzr. -5 y,2qkhszzeof the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a 12-V battery. What ih8hg:ry i )o f7v7 -lwzr5k8ais the voltage a l 5g7:v -ofa)iyrk7rzhh 88wicross 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 addedrb7 kz;mji (,gh05tzq +e1xur in series to a constant voltage source, the power sueqm,x71bu z ig k;5jhtr(+0rz pplied 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 resx/,tr,do0tlk5i i5 inistors 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 be certaip 2tm(um6u,y9x*lm*wiii j r-n 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 azxc:wvyr i vy170 x;3ire connected in parallel to a 12-V battery. What is the voltage of any one of the resisty 103xwiz:i; x vcy7vrors?

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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 tmp epy/wi9: 5ez+)pckhe current of 12 A flows from the battery, how much curr9+ew i e5mpck) :zpyp/ent 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 Christof0 u8*nx*yo0zhkrro8 i-ms+ mas tree lights are connected in parallel. What happens if 0kho- 8iu *nxrryfm o8 *+szo0one 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 pbfw1n8 ub(k8voltage source, the power suppl fbk8up 18w(nbied 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 resistan04,vgk z v1sxhce 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 mag k,s10h4vvxz ximum 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 ru.9blb e qgz b15s7hpsyt2 n.z;le.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loo7z-nf f4/a8i t +esnnop rule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop ruleh 8o +vyp;kmg, is an example of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction rule is an examplih;ar7 u;vf/p e 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 f iv;qw.,yw)nc2 x.hqdor 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 togethlew+4 (j,musier in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combwsj (lmu+ 4,ieination 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 "-"g,7wx1/p5ca3t a )swf ysl.yx to "-" to "+"), and place them in a cifxwayax5 7)wsl,3s 1y/p.cg trcuit, 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 batter;ib/w 7a 1fthcies together in parallel, and place them in a circuit, the combi /wfct; ihb17anation will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in series to a.fgjt u bz87hxe/e -0h battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in series, the eqp +ip6g. jl:5ljt26k ifcj; a )yr)lrauivalent capacitance of the comba6tli rg j a+l2 jpkj.fy):65)cr; lpiination 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 0w8vevuylf -6eg u*r4a battery. If a total charge of Q flows from the battery, how much charge does eachlrfu 8*uev0e64wygv- 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 to jf(v 3yu1bb3u 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 equivalenncfa qxpz.ly(4t bw*()ls: e1t capacitance of the combinatit)lbx s(:1qw( yzlp4. ac*fne on increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacito1sg csf *)i nq7t w6dc+7lxpg:rs are connected in parallel to a battery. If a total charge of Q f7x1 pns):f c *6qgdg +switl7clows from the 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 -o2g e9xsd8/;oa )pnq tp,dg hthe 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 ideaf0 i8 i6l,pgzvl battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across86vligfi p z0, 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 ;mkzq+a:qvg a.na* cyr zka. wn+0- z3an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the volz +a0*;:-vw3rkn m+.czagkzqanq a. ytage 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 of cpf5sp;vm i7p3 7e te7honstant terminal voltage7fp5sm3pe7pv; hte7 i . When this 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 should7qa9nn 1y .jha)ad,t 3l:gg rq

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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,6b+g uuse smx8a en10 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 placinpq /ya+q52ews g an ammeter in a circuit consisting of one resistor and one battery. As a rqpwea/q s52y +esult,

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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:uu 3 z3wh1xg9i6+o.a pdnpa j'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 galvanak3r sq6,nw1+dr*6 fk mm ff df*rn,fdaj; 9q)ometer, 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 resistand 7*xi giq( cmpvu77o(.8 bpgjce 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 obtained by placing a voltmetelc( fq2lth2o5 r across a resistor. What happens to the total current flowing in the circuit as a result of this acti 25fhlc (tol2qon?

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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 ammet;pgk a4apim7spk m760er, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then plac;6p4m ia7 pgs70mpkkaed 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 wittqfyb2 6f4cv2 h an ammeter, and a voltmeter is placed in parallel across the resistor only. Tc4q2b6vy t2ffhis network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, ,2r ff(ztulnu cd3 )w05.0, and 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, aceni2h) .yi3t nd 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,j s7cwg52 u0,gz. az3v6 2g; nin0g n*rrgtlpv 12, 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 serrvm .(r+bli/ico;g l* ies combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combinb /s)rbgpu glf n7.*yybu,k)xe/ y9 /jation of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combi. ez8axr/nd 8vd,v-mfy y-:5g9 vi lsawd9*vonation 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 parallebxyr3*8 s6mr( dsbsr)l 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 uta xlr(87 krmpe7(c- into 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 appliancavls *-ti(6n lvn8d4 *mjs k5ces are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current woulnt(4il8* *mjklsdc- sv6na5v d 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 ligy v6djna9o so4) 0t0kiwgc1 7zavlk9)ht bulbs you can connect in parallel in a 120-V circuit without tripping a knd1w0) 0 ) jsyvz9 l6ga 7ato9ck4vio20-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 i s lh/e09*:vjm8 xfod$\Omega$ 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 3bfvl b8f52u .zm+06ruzn s rm10 $\Omega$ 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, g-;b j2hs ealxz(nqk/ix(tp.5y j g*4 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 andf6qyv6l ed *y2n0ft/t 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 j8*rkvt/ff;+l;r5x ukfd (b.i o0pl n and 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 5.0 $\Omega$ resistor?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 an: ,djegt;o d/ z rgmp-+lzg(7nd 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 circh*e03 vs i 1s1lyl0cpyuit 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 through/arbn9fu+db 0 g 6xq)r $R_2$, 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 ofk)4,7 u8 kwroufm:ko f 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 9r8j0x o,h0bsa ,agkv 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, deteg6dfmyyvw*0fuvg5 *3v 2-x rx ,tsa.x rmine 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 the (*q.tmbl;w sk4 $\Omega$ 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 relatio8de m*;/:sv qyybf+ yve 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. 19-5+g 3 b3*1afiwdeqe 7cv?


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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 7ho3wj.p6 h,6as gr zspoint D relative to point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from thz kow63 q xa/qr0sh,-fe battery in Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A to point B,.41m vkqym nux4t ks7 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 4fkul -o 9 (wik-zf0swln2 y,j7 $\Omega$ 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 8* 9wvf 4-zy28kb wmtkl $\Omega$ 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 ii95qiqj ; e cjr-epe,7 pu,0run 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 tuq5 xg:zgd**icg2 kx;he 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 in p x i0+e9(/y rldvpta v/lu:/tthe 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 solid wire connecwbfo)7mxb 23 .kcpi6 eting the upper left and lower left cornermewi2.bo xp3k )fc7 b6s?

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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 )n 5ec-e(ov ggy+b3fzequivalent capacitance of this combinatiog o-5(zv ngyc)3ebe+ fn 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 connec)d7hmat mk) xd8sk2lm t8xg0*ted in series across a 12.0-V battery. How m8d 7ldk 8))g0xhat*s 2t mxkmmuch 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 sesxi, c.h: b 7;wt;auoxries across a 12.0-V battery. What is the potential difference across the 10.0-bs ; .uchxw:iox7, at;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 seiev nj,5erma+ en;+e8ries across a 3.0-V battery. What isv5iae , rnej+emne 8;+ 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 batt-slqjmhi/)iisi2 6g t8u w13j1xr0r tery. What is the voltage across the 2.0--i31 j82swt tr0 i)lj h1isgir6um xq/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 connectj85yhjshx4c e .6f f y9cqvl+f90aan8ed in parallel across a 24-V battery. How much energy is stored in this combinati6y hjyncjff9sq+ca8v4a f lx.58e9 0hon 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 9s1fvr7db :utqlxj85qcpi16 this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrau8s1x5cq ji f:l 6pqd9tbr17vngement?

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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. Thedf6txvq r7e5- combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capact-7q6v fxre 5ditance?

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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 para/ vd lj xcn6c7tf,p/tp68w*c ullel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. fct vnp/,xpcw* /8 d6utcl67j 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 parallel. The cazaf ,5ypkv)+hu 62t x0c- oyaombination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage acros0a2poy yzx5ut)6va hf+,akc- s 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 throqp3ut5, i 0mqvugh 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 V 4e;-n vbe wsw-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 ca 6nnb6qom*k2wp1:/y3 wjg,kds +xndypacitor. The capacitor is initiall: kjwod+mxn* b 6y3 wnnd2yp1sqk6,/gy 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 connes 1ybg/9kho j4cted in series with a 3.0/ 4gjhy1bso k9 $M\Omega$ 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 internal6pz0nwpkml9 .g o, r6oos/gw- 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 coil with a resistanc 2inu6nvpa6j; 50qxeee 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 internalda9 4x.gz xke/w(yt2m 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 resistancxp:yt1ds5 r w)e of 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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