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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 termr0e-:lvq l 7o.jcfrk-inals of a battery, when no current flows to an extql 0jrel:-ko7.v c-rfernal circuit, is referred to as the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminals of a battery, when c yk1(dc k4/f;-r/grap p w-idi8 guaq4urrent flows to an external circuit, is refe-f 4a/w4aidrkp-kri(yc; d8 g1pu/qg rred 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 arehy-ke: g1cqxtd6.sl, 1 bo5fj connected 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 series,u:a7e za 7qfef/;+wq3z c ,.rxow yky;

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resif7 ltnues6wqoeg(i 3 (z 9/r4dstors are connected in series to a battery. If the current of 12 A flows from the battery, how much curre3sgq t/d4z7u fwl6ir 9(on(eent 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 resiss ehjmj 5h lh8fp8-nj 7*q/mj1tors are connected in series to a 12-V battery. What is the voltage across any one of the resih- mnjhm 8*qjf1j/s hje87lp5stors?

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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, the u0dr hbu2+7espst)o9k )5zo4ga vmr/power suppliedke uguro9tarv m+0ps5)2b/z )4hod s7 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 connects. oqcoh 4h23ued in parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parallel, we can be certa1ceh0k kso14 ucw-jr:in 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 conne3k+c 9t;vl1j pj ywf-l 4+vznycted in parallel to a 12-V battery. What is the voltage of any one of the re k fwvvy;+l1l3 jcy 4+-p9tjznsistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistor 1c)cn6m(n em)ex5znn s are connected in parallel to a battery. If the current of 12 A flows from the battery, how much currenm 6(cec 5nxnm)e) nz1nt 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 connect2f;m7gaz :ga fed in parallel. What happens if one lamp burns out? (Assume negligible resista;af:fgm2 z 7gance 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 constt1g:ycri21 jxant voltage source, the power supplied by the sourcetcx 1i1gy2 rj:

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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 res16b rz jgi sw*oju+ 03//dep5hkfs.wnistance R. The maximum power each can dissipate is P.w s/0/iepnjofj3dr1 sw .+k6bg u *hz5 Two of the resistors are connected 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 jun) 8p2qgob fgyeud a2jgw ;q-*:kcdy6 (ction 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 rtj ky6 fk*yc+i8+5xsiule.
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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 anda l jzga(v0jy); (d)j 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 exam c6p3s glz 5m2u28jgukple 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 for the circuit(lrb in,+ ;tg r, 9*s3 p9zyaelrfazoc+11lei 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 torc*ht 2n/+mfzgether in series ("+" to "-" to "+" to "-"f2z+*nmh/ t rc), and place them in a 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 in series ("+" to "-gg(9tuy u+r. qrsd37rx9it6 l" to "-" to "+"), and place them in a circuit, the combination wilug96 utl sx +yr93.r(g dti7rql 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 dcl5j mr2 , f5i7t-/1yz ha9drj,tyfutogether in parallel, and place them in a circuit, the combination will provi7y, tjr5yjca-1z 52fd thfmi9/ du,l rde

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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 capacitexm - o) wh5tl3zkh+yt8r1(qiors 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 connse2qg vts8l u4,q+ :oyected in series, the equivalent capacitance of the combinatio uv8 t4o:sq2+e,qs ygln 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 conno(9 ,jea/ teqay*v;ne 6bvu p9ected in series to a battery. If a total charge of Q flows fro /v9 * abyq;nuvat96peeoe(,jm 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 parallel to a batt b :lyme;z b62cd)v/vtery,

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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, thg+-k*f a z ive;xjyk53e equivalent capacitance of the combi;k3+f kxzag5jiy*v -e nation 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 batterymucw +/d7j7eaz t+qt;. If a total charg w7ju7em +qa+ttc;d/z e of 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 forp*z 5lu .1eg6*kihz wl the quantity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal battery of +os)ifzus5d8lpd /q6 constant tezpidlqouf+ ds568 s)/ rminal voltage. At the moment contact is made with the battery, 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 seridal gc5r8, oci ep8-g0es to an ideal battery of constant terminal voltage. At the moment contact ii5 lgr0-cce pao 8d,8gs 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 capayu,n./ tdgx)jy9h0lr citor are connected in series to an ideal battery of constant terminal voltage. Wd9lj gy0)r yx./un, hthen this system reaches its steady-state, the voltage across the resistor is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shouljr xro l );hn;glz)u7(d

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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 ammakf dzh621vvf 3;tl ee:0bq f;h8u.p9dvxw 1 seter 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 p ugi)g8vb9 vz ew0zsg+cw:4m-lacing an ammeter in a circuit consisting of one resistor 4egug0 8+sgmv) -czvw9:z iwb 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 ammqmv(/i4 su2 ( pihr,pleter'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/qosnhr, /mtel 6u +i+ 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 resistance of a voltmeter's serie0c bupn:dum4pv -sbl+ 0gp 2) f+-w yofglg:n.s 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 placinz9ef+bvnu9e iw/u uev 2 a095g;6v fvrg a voltmeter across a resistor. What happens to the total current flowing in the circuit as a result of this a0uzv vu e;efavug2fwe6 5 9brn+v/i99ction?

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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 ammeter, and a vqlxv.3z164 bs w/ jszooltmeter is placed in parallel across both the res /b 63wvz4xslzojs.1 qistor 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 ik x/0zx l,+rqhs placed in parallel 0k+qlrh, / xxzacross 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, 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,l) 8zq0hjcawe69rnw4 eq/m3 s 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, and 6ppwy+*e)t rl/rk pvtkk, *yo51(fsy ).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, and gntlquu-4g9 u oyl h9n/y: ::c6.0 $\Omega$ 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 intoj9eq5fmv;5/ mjng z-i a series 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 se.mfxy x4k:p3eries 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 dg2im -gv7nx)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 pg bvmb4.by6glydu 4 *2arallel 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 pur;rfqwb 1;y7j3lp n:arallel 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 v ,xq;uf(o+1zpmy;xo qa3 (irnp -.th are connected to a 120-V circuit: 1200-W toaster, 650-W coooqmzhrq. -t p;;n1i(+p,fva3xuy x( ffee 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 connect 12mi39tqaw rcin parallel in a 120-V circuit without tripping a 20-A circuit b3q 19t awcirm2reaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.078uram2dn5xvdu9r iwv 2 94 rw $\Omega$ 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 an-ih83y2. us 29zar:w u2nybmccx0auud 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, 63kmds3 l xac10nj q.a6.0, 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 andycgx) cw hv/cd61v5 +v 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 9.0 e :+mgie0ft7g$\Omega$ 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 9.0buw12 n vf: 9hk.f:y)sz iwvc, $\Omega$ 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 resistanzv eiaem....n, hv2xjt.ec+vce of the circuit 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 -o k02yd3w3xbm zt *ie$R_2$, 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 t1tj89s;yb v tt rtwts+ 7uqs5-he circuit in Fig. 19-3?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 100 \; V$, what is the voltage across $R_5$ in Fig. 19-3?


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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 4.0 \; V$, what is the current through $R_6$ in Fig. 19-3?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine tfhvc6,7g jfg3t cs+9fhe 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 ih / 2hi8zl1,)xtuoxvj n 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 n+a + il ,*wwgpaat5)/a jkyo2the 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 rela9 sqdv5)co,-q vze+c qtive 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 relativeel mdkf:xds +12g :h8l 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 relative to point C i 3np4jhgavc0ht9.biz quz//1n 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 in Fxdw+i kq7c(g0t/ gk,j ke6ef:ig. 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 p0xsn+9 df:6fgmaj z1f oint 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 6te mwt jd*y d tb79zt97hr/,uin 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 jlz1)re0g g l7fu*cx*$\Omega$ 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 f3vbp 4t3- lca3uh0gqthe 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 ic i 5dl(vhq,qzy3u *-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 the 1-nuumgthb ata5ww4h59cx1yc 59 6.jnnqi 0t- 8 $\Omega$ 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 qiql+cbtj0(/nh vz ;gm 12)ws7zv3fm upper left and lower left corners(h n mi2sj ;bz0wfcvl/1 +gt)qvq73zm ?

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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 cap )pph3pi.e7 dyacitance of this combination.hipyed3pp ) 7 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 8uk9 7j woxvai19 u/tq-ne0 xrcapacitors are connected in series across a 12.0-V battery. How much charge is stored in the 5.0j/enuov 1ui9 wa 7-xtxqr0 89k0-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 connect+ k9/hrh+vn1qj r;bd ked in series across a 12.0-V battery. What is the potential difference b v9+hdjq; /rhk+nr1kacross 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 connect)ym,e ie3y 2xhxip 8c8ed in series across a 3.0-V battery. What is the voltage acrossch xixee83yy,i2m 8p) 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 acrosu( ,o*jir,s ev 2bs6jnar7dx( s a 3.0-V battery. What is the voltage across the 2.0xnd6 * eor s,bar2v((i ,sj7ju-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 acy0 yxlnigy;66ross a 24-V battery. How much energy is stored in this combination when the g6 i6lynyy; x0capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, an87n241xxht bg i,st rhd this pair is then connected in series with a 30-mF capacitor. What is the eqhstr 74i8xbnh, t1 xg2uivalent 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 8.00 mF are connected in parallel. The coy37-k3hxmu w mmbination is then connected in series with 33wm uxy7-hkma 12.0-V battery 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. The comby/b(+nz e tdh:ination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on/b (yhet+:d zn 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 mFswzf,( l,lml- are connected in parallel. The combination is thlfz,m, -sl wl(en connected in series with 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 is2bp(+ u p+cf:w shvjj4 charged 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 thr dmzzu pzlhq. 9pu.(0.f.cp7z ul91qvough 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 capacitovh9uth m1zzh (9a hsj8kaq5cg/p/jhl b 01o09r. The capacitor ig uvj9 s al/hqh pt899hmc zb ha5j0z10/kh(o1s initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged t9vcaf1kz +)p u6ye7b to 6.0-V. It is then connected in series with a 3yp6 7)k+e1cz9 vtaufb .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 resis - fw+tga8jjv4 an,s3etance 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 coiwbcj2*r1n zmkr-o-z 0l 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 resistance of:vvraue / j(-f 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 rjbzkn9g,8oz v ,* vj5jesistance 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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