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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 terminalkde71w)o p:b a 1htrw5s of a battery, when no current flows to an external circuit, is referred to as the5akt1dphwow: 1b 7re )

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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 battera ca(-ez9t wx,vt2tk+ 3wlz 0qy, when current flows to an external circuca 9v,ztweatk 02-wqzx3(lt+it, 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 seri,*s n,vtp i 2 q*a;bgo9erfh+tes 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 connect9tatub-7:i- fxuc l 5i abmou.7jz2 s6ed 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 connecb h6r:(sk64 ug/c/8b mgcejmnted in series to a battery. If the current of 12 A flows from the battery, how much current flowsmcg r8njkbg/ sc6/6e:( bh4mu 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 resisd f,kd d,g4kg+w462dkm-s rlq tors are connected in series to a 12-V battery. What is the voltage across any one of the 44wgmkdddkr -s lf2 ,+q6dkg ,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 v1lf ((d( h spcxu)5g -)z3c8qjddespcoltage source, the power supplied1h zqxl cd))(-5pf(8s3jpc( gs deudc 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 parallel to3 szo.ya;hd(t 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 certain that:x8)pbiug q(h * ezs znux.4qyu73;mv

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistoj k r(ym -8+chx5tezb.rs are connected in parallel to a 12-V battery. What is the voltage of ak+-t xe8cjhm r.zy 5b(ny 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 resistobt 9(.fsbikpj i/g9 d8rs are connected in parallel to a battery. If the current of 12 A flows from the battery, how much current f9(/b.dbtkf9gi p sj8i lows 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 Chrisfpdxldx q5n ;f1n9:h(tmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leadidqx1ff:(; 9 l5nhxpd nng 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-/4,o qswql:vtlzm4cb 6qq2 e to a constant voltage source, the power supplied by the sozllvm:e,w/ 4obc qq4 stqq2 -6urce

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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) h)eezo8k-tqwer each can dissipate is P. Two of the resistors are connected in series, a8eq )-)kh eztond 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 rule.-5djlugq7ua*w:/c*0cke f vd
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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 mx4dp.fjfu u/*cyt v+ y+gn/5rule.
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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-zsw;59v dm gb 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 examxtx fzp8w(4o7b3p; ecyp3l j1ple 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 validelpcoa-da gr x 4 t:gr;9t40-) rozb/f 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 tox84 yvx:dx*5d 2e dz7hlfbld/,k8vfo gether in series ("+" to "-" to "+" to "-"), and place them in a circuit, thehxf5b*kv lo8: zx/fd,v8d4x 2ed7 ly d 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 toget,bml*ijep 7ft5u3(eu xp(q+pher in series ("+" to "-" to "-+(i( u el,7jtxbp f*3mue5pp q" to "+"), 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 batte6 :.kt 5 :awnbiq6swkuries together in parallel, and place them in a circuit, the combination will provsktu nkb6 w:w.i6 aq:5ide

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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 connectedk 1u5-jlvgv/;n-isue8ii gl + 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 capacitance 9dzk/ccgo4y.kz sb;)r q j/cit*m3h ;of the c; /coz;.q*3ikjrs/khzydc g9m)4 tb combination 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 conwf4v)xfi lq7 .yk-g. rnected in series to a battery. If a total charge of Q flo - )ykligqfw4rxvf 7..ws from the 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 parall)gj3 pw.fxq0ro*qm qh*cim 91el 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 equiva/l6/ 86poikak oj(g(zz:w+ bhxx 2p uplent capacitance of the combination increase/: hw+g668o pjzk2lax xpiz(p obk/ u(s.

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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 batterpaqt7ru73rvj jom yy314,3b wy. If a total charge of Q flows o3 by j3jqy wtpa4uv,r7m3r17 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 quantiy*yu 9t)2mcubv+k/u gty 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 capaci j)j+p ;ge0quntor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the bat ;0 qjne+jpgu)tery, the voltage across 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 baiptgokp8z )r5fjd6 1 0ttery of constant terminal voltage. At the moment contact is mak1) tp0zp5j8igo6rfd de 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 xtlh 7ekt)0(z2 zo+qwto an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the res()zozhk+ 20lttxqe7wistor 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 shouldon-6m6r, 2iq4o,z po4wi4ykqyq vz 9z

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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 ajmm df0vocx s4dj6*i)p;4 hq( wf,fj 3mmeter 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 placing an ammeter in a circuit c nq63x:s6ypn/qy5j kl onsisting of one resistor an3 yxk6qs yq:6n5jl /npd 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 shunt resista ;wo,g/8frimb; x1qk vnce

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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 voltmeteru)hqp)z9vdq t5l91t r from a galvanometer, 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 resistanuo *k7l9z0hv+cx 5vxu ce 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 zwweeef qzn3+869* m(yd m dgz;sr2y; a voltmeter across a resistor. What happens to the total current flowing in thye(en z myz3r2 + 9feg8*d;w dmqw;sz6e 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 wn5 1 gi+(rh4x/zyckoe m 2 ;1l:crzxsxith 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 value of the resistance by dividing the voltmeter reading by the a1cc4l z2hy / ( xrre5x;gmxnsozi 1:+kmmeter 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 ammera ikbn,xgm2 /h6r87s ter, and a voltmeter 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 b2xs7/6g, hrmi ankr8by 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, (uq8dptpu0) 5syf/zp5.0, 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, and 6.0 x7 ,b*xl 7 s:w7dzbpoh$\Omega$ 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, and(e.iqm21y/wg4wvy:jpoj c q* 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 azq39c- 3q-xf mf/ziho 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 in5 hq;l2za0 o fl2sj:yy-wy0ghto a 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 v)zz9qa4 b .. 7qvzlhgz u:a/dof 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 combination of a 4.4 ;y ik);lay6cyuhst/ e:ty0i0 $\Omega$, 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 intr4haiyewo(dlmwxbc6 ()+82 r o 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 qg1f /,bwp9jy appliances 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 tyqj9 bw 1/pfg,otal 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 connect in par (p3bchp *su*hallel in a 120-V circuit *hhpbu( 3ps*cwithout 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 f;b*lxo5jq iybn: 1ze9o:* cjv )jg1h$\Omega$ 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 al.0x imr z 4 iu;)ngn*4cuatf)0rwp 2 4wqf7vhnd 30 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, and 1l-nf.-k7 hdzw0.0 $\Omega$ 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 and 9.xaw6;n6p :w9 qnlshv :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 a l -/evkg(bwt mo3vn;pd6:a9pnd 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 anunhe0i u yg7rt3g69-xd 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 9.0 $\Omega$ resistor?

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

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the circuit in Fig. 19-p +m5of(hbxt: /l:pjj2?


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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 throu yr*5x7j ,u8jvl5+wravh0f l zgh $R_2$, 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 Fisx6wbz/ klg 8/g. 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. 1ig7l o5wv yg5(9-4, determine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, detera yn5.6e+bx0zptvle7vn/,f d mine 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 thepwey.)yl-u /vh:gn 4 sg5)wvj 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 Figx34iq4rqo 3/nxmaqa 7 . 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 poin ) ulile*n;s rrqh/t43t 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 py6ms9m2mtumn a br1;zw/ ,) bgoint 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 fromtm ql kqso)px/l-1v/ . 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 p3pj/*kw9 dc* fryv+wlc 3 ffr3oint 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 current in h1yse1dn61( 3 ds fnkvthe 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,:n yeb2rw. hwkb3*f c in 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 4 , kj2rhh eajvla+ 9)n.*);s9jfrkfpg$\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the u zi k/bwa 2xfd5ol*6)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 :y h1cges/l/ cthe 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 connecti: qa:h jx8qhrp v 7afvmr,q8*sc/*df ,ng the upper left and lower left corneaj,cr:s,8 vhdqmv7:ff a/*8 q*rqx p hrs?

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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 equivalent capacitj so 8kl1/g+y2d+ w9 ,0u(8 rhltvw o5hcdabykance of this combination is80jus wt 2 c9hdo ako,( yvd5bl/hkw 8+1ygr+l

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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 m2byea c 08:mnwi)r w3nF capacitors are connected in series across a 12.0-V battery. How much chbcyw 0imna2:)3n8 werarge 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 l mjpk7g26+ cjpy3eufd6-x3z mF capacitors are connected in series across a 12.0-V battery. ugefp7-j+ y2lz36 mcdkj 3px6What is the potential difference across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are conne- jub( i ;qce .dz-dcci+uy21zcted in series across a 3.0-V battery. What is the voltage across thezjdy e2 cc 1c-.+ziiqb u-du(; 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 battery u1 -4sffxaor1u( nf(p. What is1n(raf4uf p s1 foxu(- the voltage across the 2.0-mF capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors are connected in parallel across a 24i i sgwazvv68/ 6c;he6;o no h;u+)pxa-V battery. How much energy is stored in this combination when the capacitornz vh6c ;p ;/av)s;6o oiaiwue8+h 6xgs 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 connecteda q sraq3,w(etrs oc01 3vza(0 in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangement?r3tez 3 asa(qw0v0a,cq1 r(so

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.0;. exhc9-n.-t bz(,wjoxdoae 0 mF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery andzw d--9boh.c;x ( atenjeo x,. 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 comb,h y 6 va6quz1rfszm p;25qgb1ination is then connecte1zhy qm5,q6u2r zs6 gpb;v1fad in series 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. The com1j qif(g/ v7 gmuw.qc3 z,6.dvlb(p yubination is then connected in series with a 12.0-Vv(zpfduqig..yq(l,j3g7/mvub w c 6 1 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 twqvb(se *g2q n* t0 -bewdy:v(hrough a 50 $k\Omega$ resistor. How long does it take for the capacitor to reach 90% of full charge?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged to 12 V andri4 9(vo*q8w iyp4c kj 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-mF5e bp:c7rqh+:p4oik c capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9 pi:e4crbk qo+:5p h7c.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 connectecg6nh1w ibzcdq x600c l858px d in series with a 3.dizng c6wq508 8hlxbc1c x p060 $M\Omega$ 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 internax 6q.yd; lze l:l2u (h7(ac(pvqqx :wvl 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 j3g- z5z ,oplzcoil with 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 resist d) twx4qboari9, / a,.j3xfcbance 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 resi+6 irqc/wvgq0 stance 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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