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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 6qxs bv5peg*8no current flows to an external circuit, is referred to as thee xgv8b5sq6*p

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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 a battery, when c4)qr xymt8g ek+sj.bj 4,ga0purrent flows to an external cirb.4sgg q ka)xy+4je rj,p 80mtcuit, 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 batterz o +wwd. 6ajj6sw2*hwy

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connecivl7i6 : to5b iu-jf0ated 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 batteryo.xzrlk p(+br2(0f o2z -jcxy. If the current of 12 A flows from the battery, how much current.zz(l+j(-2pf rx 2c0 koxoybr 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 12-V battery. kl -mhiy* p41y What is the voltage 1lk4-yph yi*m across any one of the resistors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a constant voltage sy xu7;jvuuo++ ow,o8vource, the power supplied bw7, xju ;o8ouu vvy+o+y 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 connecg*d +og91 xfp4rz;qxxted 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 )tcqbqe/ .8m(mx) 8 6 ccz.vz evct3mncan 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 il5dp 4z9v65i t)lw1pg my c5egn parallel to a 12-V battery. What is t mp1d4gp9ige )5 6zclwvtyl5 5he voltage 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 resistor;:ld/ta .6nwj *pdlc ws nau1 gc220dzs are connected in parallel to a battery. If the current of 12 A flows fromp0clc 21/ nwd:n 2.6dul *;a zgjsawdt the battery, how much current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Christmas tree lights are connected in padgx on8v4biq:ko8 z (2rallel. What happens if one lamp burns outx8v(dzqg2i4n 8:b koo ? (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 parvjyc-5,mm+eyad v7/u allel to a constant voltage source, the power suppdy 5,m/-e vy+ uavj7cmlied 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 resistance R. The maxim ki0lc87j9p c*kd w-j4csf1v kum power each can dissipate is P. Two of the resistors are connected-1f9ic0kw c*8cj7l vk d4jsp k in series, and a third is connected in parallel 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 junction ru8hj* xl6 gbp/a0u 8geu/k+zzt 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 loop 9rs n,-uc1b1jr ypjp7rule.
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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 eyal+;,tvwr (j 5bhg, oxample 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 r w/kcnm 75 2.vmr0ozdv+2xkvb 22zcd wule is an example of

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the equations here is valid gs ebh*:q-zw8lkbu6-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 "-0 1ay51ih9iher )aenw " to "+" to "-"), and place them in 10n5erw heh yi 19ia)aa circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together( 6ts:nunw pz. in series ("+" to "-" to "-" to "+"), and place them in a circuit,.pnz uws 6(tn: the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in parallel, an a4 reasiq26l6d place them in a lirq 26e4 aa6scircuit, 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 to a batterpj- *o5kg;pks5r6 ugny,

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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 capacitanc4y9d7 (ib bbk6 ksi zy5e(j3hte of the ciz(h t963ibsjy57b( k4d eybk ombination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitorsgsu8o(tq(y, ,knx *9r:hneg s59bq pq are connected in series to a battery. If a total charge of Q flows from eq5u9tsh8k9nb(p n( ,o qx ,yg :r*qsgthe 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 capacitors are connected in *qlh uc;rq7( wd- a:r ck+bz0tparallel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel, the equivalent ca2kc lio-g,x9djjdt 4- pacitance of the combination-2dd-4cxljj9o g,tk i 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 bat k,xvu9kcr t* .4ngi0ltery. If a total charge okk9 rtu xcn*,0g i.v4lf Q flows 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 the quancmjd27p;vekeqv*8 r1tity 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 ideal battery of conslxt3kb7qu hcy )z8) 1gtant terminal voltage. At the moment contact is made with the battery, the voltage across the capacito 7 h uyg8xzktbc3l1)q)r is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected inc r)esjiq6e: 6 x8e6 xan7bq)j series to an ideal battery of constant terminal voltage. At the moment contact is ma8:6e6is)7 a)jcnrjx6eexqb qde 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 of con50o6qkhq ;x vdstant terminal voltage. When this system reaches its steady-state, the voltage across the resistor is0; q5hoxkq6dv

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter should2ig8) jt)h zsr

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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 the addition oft(2vbsl47 mf (bb*qj i 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 gv ko5x 9y)4fkj4 v.t/ge3xvj 5msh9qcircuit consisting ofx54 vj.yes vk49q hog/kvjg3t mf)59x one resistor 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 am q -2jjgy,6qfhmeter'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 galvanometer, one normally wouln f xm3pd.p y,8vn(lw9d

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistaiamqf8q-l7 s*nce 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 placi:kfus */ 0aaqpng a voltmeter across a resistor. What happens to the u p as0kfa:q*/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 amm ;c(j jq*huw0aeter, and a voltmeter is placed in parallel ac ;ujqh0c(w *jaross 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 aidx /kxyw3:q eh / -9jkl4sgb8n ammeter, and a voltmeter is placed in parallel across the resistor only. This netxx8kqwd- he:3/gilyk4 b9s /jwork 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, 5.0. k6z8py4ji.n k:qsb nn d3xv0, 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 19 xc(r,4uy+e bhj u-ki2, 12, 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, a 42kswycr., ar ..yq-.dvmhcdnd 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 3.0(p1i;kmzpu7c3twe4x /x1b6tqzc8 qx $\Omega$ 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 a 3,t1e; wsn t;am.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 i *x qks 94hupf,bqk44rnto a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel coanl 1rg*vc .q j8tqt/k-hc/7tmbination 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 parwx:)kawu epbvijz;wz5nn 2.6: vr4, xallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V circuit: 1200-W toaste 5o*; 0wz:z-ypa8b mrix5,o lagg,awwr, 650-W coffee pot, ;*-a gow5z8xa5 0rmblgaz,o ,ipw: ywand 600-W microwave. If all were operated at the same time what total current would they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum number of 100-W light bulbs yo8 9d/v: h:r9mhb( btpqg e pcs:gby4s)u can connect in parallel in a 120-V circuit without tripping(bv:ms h/ p yb8b:g:hrp)d4s 99ecqgt 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 a)jl6d, kmpv.yuv*m3 $\Omega$ 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 30 gxf)(l4 va0i8*by kqeg pihc84 ::g jx$\Omega$ 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 10.0wsj )+*rd)d qs $\Omega$ are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0 $\Omega$ resistor, what is the current through the 10.0 $\Omega$ resistor?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9.3x 3 p;q4w21hwizzqgs 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 andt+ t3: xs-vb: +bqhuit 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 andt/g 3 p3pt mn0zq7u4dz 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 cirio4 1 *gtmjf3v*w6hrucuit 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 bqx2 z/c;dts:1g wt/j $R_2$, 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. heaa+b. 61(uqaf cb eky6a7 x+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 c ye (-5 yjrptm*t/n4kbybb0ruq1i2x+ urrent 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.2ipf ucz20 : w5sljhq: 19-4, determine the current in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the cue j i9pxosn63o 600nu0ax oo3mrrent 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 poi pd8vq 0 knmd*u/nj1-hnt 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 relative to point C in Fig. 19-5?n3.4d/ybk xbl


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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 *ek48t h ;bjs ez,)niqpoint 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 yw0 03zt4hu3. lufn6m,vxofw the 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 in Fig. tm.p/43se2i )r rkwgq19-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 7 we v9 1,sn;obukw;gb6$\Omega$ 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 fm p9sev)*)ng $\Omega$ 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 y0 n z1ml8 anp:ev.i2kin 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 thedj lj.+nfx5c83ii,lv1u0 qp p 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 tk.wbf9x7a(c t rc,icsubl 442 he 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 left and loqa5dn d/)-1 ks5vt8y iz u,awlwer left cornerz/snyiuaq,k w8l )5d5vt- 1d as?

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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 15 hh:v b9swwzconnected in series. The equivalent capacitance of this combinatihww hv :9z5sb1on 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 serieswm g1 (m fleime9;t(2dwm+a4t across a 12.0-V batteliea w gmt94e m tdm(+f;(w1m2ry. How much 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 con *)qvz vid55v g()pzfknected in series across a 12.0-V battery. What is the p(kvzvv*g5i p)dz qf) 5otential 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 cappzaa yo22zw r 8o*y tat;y/d(r/*;p:hi bmbu.acitor are connected in series across a 3.0-V battery. What is :t/2aypbdyr/*h *m(ab ;z o.rzio2 u 8t;ywap 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 connect yx. 6excr/qm2png9/qed in series across a 3.0-V battery. Whyn /p6e29qmq .cxx /rgat 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 conivyah 0y9/ 5.d wrks;tnected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are fully chay9k5/ r0.v iwdsthy ;arged?

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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 paif z jwn0i7s+a 1heydit-t)3zb k0*d(hr is then connesj zz0dwb7 thh*kd-t1f y3aini(+ 0)ected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.0/qooi :u/ h8jjhuo68 p0 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and p /oo:hh 68ui8u/qjjo 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. The rx) s5x,xumf) combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.0 r, ux)xsx5f)m0-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 com ulcy .m(q.j,l2lk; qbbination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is,l ll.k;b(. qyjuc mq2 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 a 50/u mpv 2ik ;vzr3.7qnf $k\Omega$ 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 dischargedkcl7: nc ;bx:66 dpxkr 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. Th p)oo4g c0nv*+xp;wug e capacitor is initially uncharged. The 40u g *oovnwpx)g+c;pRC 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. I-o;ukj1y1zvj x(5 ulnt is then connected in series with a 3.0 jy;v1k1 jx(-luzun 5o$M\Omega$ 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 resis9lxlkl m.8p7gtance 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 resistance of 242 u 1h4fncgu p; vt7h+6uc/kza.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 riw1rj3 7n3scs esistance 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 res omh5t+m ge-c2qgz,;s2rr3q nistance 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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