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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 csrb/htk-30 j j 4u6d2m o4*bnhh1kco current flows to an external circuit, is referred to asos kchdcb k-4jo*r304 hjhm nb2t/u 16 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 betw: ysl7g*y-u rpiprsce9:gxz6u(:g- r een the terminals of a battery, when current flows to an exte * :-e7g yxyzrugprsi lr:6p9-us( gc:rnal 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 connectesn:x2am/ (: agbpr x;y7ak5q id 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 sw w(fy+u+4tc x-,es yg utd2j2eries,

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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 connect9*j5d q b)2hibfb :u ,;eftccjed in series to a battery. If the current o* bcq5b je);jitff 2d9buch:,f 12 A flows from the battery, how much current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series t35 m e6m/gzicpo a 12-V battery. What is the voltage across any one of the resism c5p/ m6z3igetors?

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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 constant voltagxeuyhyw ulb/ 4t)24j.6 qxrw1e source, the power supplwyb re)qj2x/ hylw4 4 .16uutxied by the source

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in pa(2dca w,gr) :0s shfoarallel 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 ip)l,v y2z)zg un parallel, 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-V battery. Whatji()n:(5lhfidueh 1 w is the voltage of any one of the rlh1i5 uhde:w)j(inf ( esistors?

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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. Ixofiha) / j5-p)eatm0;obmj gl00a(tf the current of 12 A flows from fi-0l p0tetoma g(o ); 5m)jaajx0b/h 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 C1l5mry2f..w nphrv +cb7tp, ghristmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires le.2+.p7c,nyp t bhr wf1r5v gmlading 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 ikzfanh/; v5o: n parallel to a constant voltage source, the power supplied by the;fon5h vk:z/ a 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 resistance R. *:07 tfi*orsf81e9nqyvcco w 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. W*oc *f q9snft81cv: y7w0r oiehat 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 juncth u80fyn bjn0:ion 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 ruled4se: 7gdnm /r.
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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 erpz t wxw g244g-cco3-5a/ 7dxxk0lrbxample 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 example of.5r2xz 6u enpu

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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 valid7yhlqjyf*-6lyiia 0 - 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 ("+" to "-" mkps3hau +/w xh -6u:wkt 0*hhe+y6jdto "+" to "-"), and place them in a circuit, the cotk*a:x/m +wp6heuksh h 3wd y6-j0uh+mbination 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 batteri x6ld)qlcht.rav 8 u80es together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination wi 8hcu6vql8axdlt)r0. ll 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 togetherrkr.wg/yo1s 7x-lx) r3p )up c in parallel, and place them in grx31ru) pk c)lpoxw. 7r/ -sya circuit, 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 connected in series tw,2 iau7y)plfkeh5p0 o 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, the equivalent capacitance i+xr6hvtf+ c/y;tbnjs5q4+yj e :ri,of the combyj nt c+ +qryi4t: /x5;bvsrfjh,i+e6ination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitcf 3 s r9olj+3-3ikresors are connected in series to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carre3josc sr -3+ 9ifkl3ry?

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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 a battery,am)s/sra k2d1mb+7 /b8 sm mkz

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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 parall2h4p 0sj nn+rgel, the equivalent capacitance of the combinati+0 hsgnrj4p n2on 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. - r42dkchlm 1ehw/z-tIf a total charge of Q flows from the battery, how much charge does each capac t2m/dr4 el 1-zkhwhc-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 quantity RCq h.eouo 22ar/?

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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 seriesk12l391ivom+fo3 -cuvi nz -g bivpc5 to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acrolnpv kuiom3f v2iv9c1og5c+- bi- 1z 3ss 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 sepo29,imi+c rw: y/vsw ries to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across thew/i+i v,ow9r 2pc:sy m 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 batteou/if(f71mns mi n(: wry of constant terminal voltage. When this systems(/mfminiuo :(1n 7 fw 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 shouhi*z .ls8/:axq2jh7e4z yndfg 9lzk rk)d; w7ld

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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 thamvy64i f25 bbe 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 circ b3s*xl:y )::oigr k/)z hxusauit consisting of one res *:uky3z)sr xih:bx ):a/og lsistor and one battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammeter's shunt9 qdo:qexy4wpzr2eqt:4 mb;qia63 e+ 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, one normally uy h45,hnpc+tv- 9ftbc5 db(kwould

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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 voltmeteujz0uf *grg( 3r'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 obtah+:,,ornugu m ined by placing a voltmeter across a resistor. What happens to tnor: mu,u,g+hhe 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 iq6fqa uhbj j1* io/67y bdy;d3s wired in series with an ammeter, and 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 vay/7j yaiqqjdu6*b o; bh63fd1lue 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, and a voltmetercenr9d-2w o a. is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading -. a2nod9e rwcby 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,tsv4yi8/gl55a kf 8un 5.0, 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, ad,.zff:g64g hmlldd-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, 12, airkwwq:(-o 1c nd 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 ser ;vzq afc5 rec..x6v4iies 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 combination of f p.7, i hbazv*ac 0c2pex9fnz8y(.eea 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 parall sekpeq(9c 320ah *ql3frb4dz , lb3psel 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 ip; c+ihvua-;6hj-9dcbdt e u gvxtbx8v95/m* nto a parallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination ofio:tuw.n1la0 ks1 nt -xx 3)ia 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 a41b t a6l2wzbmz6oxj8ppliances 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 6am18ow6blx4b z z 2jttotal 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 conne6w 6fzeu58hofh s7 , lug :4ruau+cty/ct in parallel in a 120-V circuit without tripping a 20-A circuif4u e+u6u uhrzw :6tgolsac hyf8,7/5 t 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 8g b5 rj*vbws;$\Omega$ 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 3h/fy7a 1 aoebx8*w0i4uuqwl+0 $\Omega$ 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 46+ivj /dwey+o .0, 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 am c+wdye2j;1und 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 an j 2mi1ast19z6vghvg mb :we +esem9;2d 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 9.0 7tor :yvt wdo2 ea, 73u3e/az28nj iqp$\Omega$ 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 cirno(9)sbytvp n /c8be 7cuit 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 throuf+zf/-5 zcekiq1u 4n1 f9jfb lgh $R_2$, 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 ci c8bk+1 f(z6 :orr(lznocpnc*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, deter2 qsv:( wxw*z v;pduo,mine 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 the current in t54oki+.o):nbecxmvh24 k 8d2w rtf dwhe 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 curre4. k4xx4crn-fo9 b(en)jn9wsa tevw )nt 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+ccjp t tz13(r point A relative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relativ +i03h n8w;xkzwts ijmo4vt2 :e 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 relg: n 1*csl)tjfative 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 infv9k( g 4az- td5p5gaonx7n 0 o2r0ztq 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 poimtt l6(al/(,3oq lh lgnt 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 ifby6**en*f2zt rq k-t n 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 i:wecj. tep( gw3(i p;un the 8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the zesc3vg6ddt9yk2 h 3) 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 ,vs eca23v.y m 36eaao ,v8hhmvuxx1 7the 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 3orkylde ,3 5aqs7a ,lthe 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 connecting the upper ljiegp5af r:8r avn)n/z)/k1zeft and lower left cornef ka))/1rv:5an/iz 8r nzg jpers?

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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 equivalen:;kv d pm* m tb/k)26qub:ei3grremx*t capacitance of this combinae rp: me*vmrt /b6dxm:kgu2q 3b;k)i *tion is

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series across a 1z7m6js/- anqs4 w xs0d2.0-V battery. How much charge is sto-jwssa/s q 746zdm0xnred in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series acrossz;4bu(hy0 g eg a 12.0-V battery. What is the potential difference acrossz u0ggy;(h be4 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 ser v; )y cu;u m:a+g rc74ce5j,z-dnazkoies across a 3.0-V battery. What is the )cczu4 r e,;o z5ya;7k:d-v+ ugjanmcvoltage 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 cr1os p3rtf eole0hbefo2d( 5 :jzw9,1apacitor are connected in series across a 3.0-V battery. What is the voltage across the:b eel zw5o,9h 2 fo1pse0d(1rotj3fr 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 connecte ).,x:;4i ji jatezcr3ydkz1 b p)8ncxd in parallel across a 24-V battery. zt)31 b; .j)ix8ycpjnxczkae:, ird4 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 r1hui0/i+ sga 3s0z9r qdv2agand 20 mF are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of giaz3rva/i0+s01dqs2 h9 rug 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.x;0.kc-e qwh b3mc(v3pa v6nr The combination is then connected in series with a 12.0-V battery3-0prk qn6c mhv(e; c.bxa3w v 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 8.00 mF are connected in parallel. Th7wb((:mu ffp ,qkb,w te combination is then connected in series(mtwb f:7,wu, kpqb (f with a 12.0-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 parallel. p(y,o7 tmyfq: The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the o tm7(q,yfpy :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 char1 ,elt(4uy petoa6ug6ged 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 12 V and then discharged throu9 v1h v(qj *l-fmsbgs(gh 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. Th3v7 o*f o qkun:7s/cfle capacitor is initially uncharged. The RC combination is charged by a clq/7s o7u3okn:v ff*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. ;nej5 2huvu f .nr9rn zeu:5:q It is then connected in series with a 3.n5r .e q hjv2urn :u;un9:5efz0 $M\Omega$ 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 resistan (w jt,thgdnhe/s (+, hxh9az5ce 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 wir1 8pay3r oy8lth 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 rey9u/s .2amb0e-jpg ygxs k(f;sistance 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 resi9k3t7g lwx2wc07 tvt lstance 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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