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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 current v 2n ek:a4y wu,t-8bj/ hmc(sec-gy9aflows to an external circuit, is referred to aytmejukse4bg c8w9yn a/- h2v-a:, (c s the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential differegh6xn/ cdbd(5if rj,;nce between the terminals of a battery, when current flows to an external c f(6d d5,jhr/i;xgbncircuit, 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 seriesy hz8efe 9z(;v au-zx( 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 inrc,vj heb1r55zyrc7 4 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 axb:*lv8ql*txy,wc - connected in series to a battery. If the current of 12 A flows from theltx*x bly : 8-cw,av*q 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 t*cl2syd kpkpvb7s:25 o a 12-V battery. What is the :2cdb2v sppl7 k*ys5kvoltage 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 source-84de-q6 -p izik/ o,bowmqrl, the power supplied by th6k, - i-m /oibqdelr8wq4z-ope 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 connexm:k57k* uev7aud;t vcted 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 parall.wy8,vqhmr3r 7qldm, 2 l yk*jel, 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 battery9up7 o *acc ok3as.zb(. What is the voltage of any one of the resoa(c b k*ozp9c 3s7.uaistors?

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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 the 5e qh6ohy 0xg9current of 12 A flows from the battery, how much current flows through anq x eh905yo6ghy 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 Cn2 (-ddo /iz jm/px)dphristmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligmx2j(zdpp/ddn-/ o ) iible resistance in the wires leading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in parallel to a constant voltage source, the powl, 8q*p0c v.ywzww dj;k.la6ver supplied by the s0, .kq ;yw. vl8zp*lc6javdww ource

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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 maximum po;gpxv1h5s lkq:o 3a+q wer each can dissipate is P. Two of the resistors are connected in series, ankp3qxqa + v1;: ghl5osd 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 rulew/ taw5wwr80 f.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loo *h4 ezt+ :f0g*ngf gs1k4ijfup 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 ruldcaq q.p77n :de 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 example of2d n neyz6kckau :ux8) 5lfn+4

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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 her-0bp76 )bci ukti nov:e 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 together9z3r5,c bpq0 )69dksjsdtxfr in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination will proviz9ct sddjb39fx5r)0sk 6r ,pqde

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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 tgq2k7 :jvdb,2zeclw18t ocoo 8 hl,h1ogether in series ("+" to "-" to "-" to1l8 h ec,dw7lg:j,qt 8b2o1zohvk co2 "+"), and place them in a circuit, the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries t4 rswj29qlhdo )jsws1j w2ibm6*n9 a -4s .insogether in parallel, and place them in a circuit, the combination will provilj.2ms9swwd 2-o bn9j1ssh4q*w46ra isj ni )de

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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 capefw,/i)tezlp8.l3 h,o h jia3acitors are connected in series to a battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in series, the equivalent capacitancee6 x,r4,iaeu n of the combination incrnx 6,e,u4eiareases.

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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 batteryt ; qcgsbv6hm3p)*y4c. If a total charge of Q flows from the battery, how muccg tcp*qhv yb;3 4ms6)h 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 parallel to a batterymk5e-ps0sjz6 zp6b2 e ,

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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 equival516j s 6zetjiient capacitance of the combination increase5 16tisiezj j6s.

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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 baq:)kjuog 9v .oo)g-,pd+4 brx5 r ilgdttery. If a total charge of Q flows from the bio+,b. dkqrpgvxg 9og-j):o5 )ul4rdattery, 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 quantity Rc *.tekqt3x0sccl1/xC?

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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 id/k*8ws( ur e0bo:idnn );qq e*-tzooleal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acroeo80 i swnur:*qlond()okq/ tz;b-* ess 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 an ideal battery t,f ge5ew,o/uof constant terminal voltage. At the moment contw/etue,o ,g5f act is made with the battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in serie. xm/;1h yhdakv. rg)j;mtj0ks to an ideal battery of constant terminal voltage. When this system reaches its steady-stat.r dhx1kmmv).0j;y;g/j ahk te, 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 shouldhs qbzi33*jmc,8v y0w

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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 ammete,3gq y.ln/ xjv72 pkgzr 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 proper i 8gg+f+ccvs xe74d9s0v wu.aly placing an ammeter in a circuit consisting of one resistor and one battery4+ivuc.c0 ags89gd7 +xevfws. 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 shunt resists w 7x4omrqiy3a16cpy86 5norance

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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 galvanometesb x8elq-l3za wi3:kl(v0o,dr, one normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmeter's series rexljxowpxa;*m607 1o zi. 3x oqsistance

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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.er1pvys74qh7n bya 43 What happens to the total currns3h7y 7qrebyv 41 a4pent 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 sr:ubi:cxwlco 2,uk6 6 eries with an ammeter, and a voltmeter is placed in parallel across both thekxw6 6,ucuo :c 2ilb:r 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, and a voltmeter is plam) hq hm c-to)+;*qzx+fxp hj+ced 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 by the ammeter reading,qo)+ -;c xj+)fthh*hxmzqp +m 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, go) /zm tj k+/9navw0uf v1.ccand 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, and 6 3(glcle-lq .y19swce-x w yc3.0 $\Omega$ 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 19xxt*)7ptb i.f6 rfst2, 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 series co r ix27x*.idlnmbination 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 abm hw*-kos0pz20 wv )i 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 parallel combination of 4 7h ax5x0/+ rp2cdvpzy.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 :62gz,n-/hkalvqgn p 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 intxh f24enb csu0nml;8 9o 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 appliances are connected to a 120-V circuit: 12009uameo*vti 2w0+)q r6 x;aopm-W toaster, 65qix 9ov a6 m+;e0pu tom*w2)ar0-W coffee pot, and 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 you can co2s0d 86zhkdlj7xm,lnj ntzpu ,ub*hb4 f6) 0lnnect in parallel in a 120-V cir)l,h4 jz0 7 fl 0np,h6lxdmbdk8ju6 *n2 butszcuit without tripping a 20-A circuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0 62cdmj xed84p $\Omega$ 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 an9hz)/ggadgg( wb6-y oab6 9e2zuc l: *q r(vuld 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, an.j-gz*g. z83ywb7 m1 k 8jmh yl:u)fblfs ywu)d 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 a um - nxw(9pvxe-.rn(q; gmv5and 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 and 9.q ;itqj6ke. v )0bp euz:d+ux h/(,tcl0 $\Omega$ 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 5vibqc(qes8nhei +q)3r o*o ag /ns )/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 civc sa03+d)8 fw-e ana s83jawg nkyc20rcuit 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 n ( rkncq+xt ;i3).lvvirzf43$R_2$, 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 Figp 1xso8 o/n.jzpwl *6g. 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 42w7hie*pu bd/q9ld ,k zbir.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 infh)/5,x(nlpqdcqh ;o 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.glk i c1ov.m1 p4f/r fqm,h7k 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point A relative to point C in Fi 7 2-: ycxw;;yxql*akf: tstngg. 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 to1w c7; fkmld6ea/d .ct point C in Fig. 19-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point D relative to point C in Fig. 19wp54jx4*uenr0rv0q b-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 smj a9ps+k9dmq09 m,6. :,psh awyejwthe 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 d ke o9;ku6 (0*j6q hoqry7olrfrop from point A to point B in Fig. 19-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the currenq +k.a zo.lm;4r 5wuhqt 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 8 uz tk/7:1ndt.3 xx0lj+ n9py / gpb:mv dz0lcr$\Omega$ 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 4+xardyy -,1j z5p1x zi $\Omega$ 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 inew1; 2nipl,xal vez4 n334i 0p vddaep5)cy0x the 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 thriy6 5jdewy0 k2i2 y-de 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 so ; tzd.44vvu fiyr n3a+:sb(wyrpnfi; :4 7pqklid wire connecting the upper left and lower left corne3drfytb4 aw7qvz:;:nu vsnp4kr;fyp(4+ .ii rs?

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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 equivek gob8*c1 d:dalent capacitance of this combinat81d* de:g bkcoion 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, an ov (puc( w+hxrl ;aw)t( e+jtbdgd7;8d 50.0 mF capacitors are connected in series across a 12.0-V battery.dat )uv(jwoxbh d((c g++8pwr7; t;el 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 connected in series across 2h8oxbim vbs 1zheq6 .pvg2)m x,nx:-a 12.0-V battery. What is the potential diffegqh8x 2z1mnv)bhe s ib2xx.:m, -pv6orence across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series across a 3.0-V bhb1gorht*4s fpdfxtl9507hs 5p 1v 6cattery. What is 7lgtsohp1pd0xcbv *5 fr 5s 1hh69tf4the 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 )y .twon0-wdg+4k dcx a 3.0-V battery. What is the voltage acrw4wn+ ox y-ddt.)g 0ckoss 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 capacitors3alc:qby i w4. are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitorcq4b :.3awliy s 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/7retwjf) j9 p in parallel, and this pair is then 9jf)rwjt7/pe connected 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 d )(qywsed5,m0nx d5y3 8lkmbmF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacita05 k8 mq wdb3ysy)m,nd(del x5nce?

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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. k (we1+gmv2it00 mF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battg+mv1(tkie 2w ery 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 p( 1i5zzi1 qtwqztqk4- arallel. The combination is then connected in series withkz ti1i(t54qz -z wq1q a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across the 6.00-mF capacitor?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged through a 50w 9cs pl2g)q3cjm4qv . $k\Omega$ 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 th +o 77 idwa3wixm(2n c4all u.gyk-3ovrough 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 con.vo+ uf thcfic7r5 5f1nected in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is + 7f5c1ftrv.5cfuhio 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 t,3x (ut1t3ruisja* oko 6.0-V. It is then connected in series with a 3s,rtoiuk ua 3j1(x*t3 .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 resistance of 10b3w; iq/lplq 20 $\Omega$ 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 24.0 gk d8 zegi2//l ud3yi0 sa.a:wu4j:xe $\Omega$. 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 resist xuh4l7)uh y- 7tz/xg9jpfdi jkh7)6 iance 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#
 
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  A galvanometer with amh7s :lig rt)7 coil resistance 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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