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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: 游客未登录  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 batter (2kvqunny*nz* x*xdm /,ni*t 3bl*wwy, when no current flows to an external circuit, is referred to as *wxn (nb,unv* iy*zq kl*ndwt/*x2 3 mthe

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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 apxon i3igne-i( c.) :j battery, when current flows to an external circuit, is referred to asexniion (i.gj- )p c3: 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 b rqlonxlxy14et /os6/, 6, gbzattery

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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 safloq: d* (/*fds hee14zg0crxz4h;oeries,

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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 connec: duwzd+ * fd8jd1sc7gted in series to a battery. If the current of 12 A flows frd d+1sfz 8:*ddwj7g ucom the battery, how much current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a 12-V battery. What is taw10bbylm0 ho 4;w g7hhe voltage across any one of the rb40wa y 1o 0m;bwlh7ghesistors?

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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 tlfcy(ln1 ,; 7i02 jsykj4fyxy o a constant voltage source, the power suppxy2y cy1 (ijj0n,lf4lf y7 s;klied 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 paralle.7kphn an*virnp z n 0:zr).-37syhwrl 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 certain 2q-l,ay1fyp,hvz j h/ 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 parazc/ 773cz) n ls,uzawfllel to a 12-V battery. What is the voltage of any one of t/ c7falz nc7)3u,w zszhe resistors?

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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 ci uq xtg:(og2 .3(o8 9zius;hx9fv khyonnected in parallel to a battery. If the current of 12 A flows fo(qh3s 98uioh u xgx (:.k9fviy2ztg; rom 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 tc4 p (nazx9o ox1+*xitree lights are connected in parallel. What happens if one lamp bcapo1*i nxxx9t(o+z 4urns out? (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 p k( (1ceja)1icizlek :bp bpr mqd*hcr17 2g5+arallel to a constant voltage source, the power su)crr qkl:ej +ibzh( gbc p117p1emcdik(*a25pplied 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 ofqyi6p ltw 2ce):t3v;c resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallel with these two. What is the maximum power this nettv ;eyc: i)62q3plctw work 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 junctiog81ev/low0 hw n 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 ru ka2/uao 6p7.27halfre /heklle.
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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 examplemhxmt95ndhqcetrr o3 62g-u8 d9d/i5*i j sp- 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 exaywt9m6s py*f9 mple 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 he,/kee,r8pzl35 fslert2 aaauvk( :m+re 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 together in serieskm khf,1ob,d52 9toyg ("+" to "-" to "+" to "-"), and place them in a circuit, kfm2 dbh,5 gy9o k1ot,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 (zga89 +:tbi:ttyuz-kkl v6 d(.:. psux5gl dg"+" to "-" to "-" to "+"), and place them in a circuit, the +. 5.stltxt u(z::9gyd k8va zb:ulpg 6d-gikcombination 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 parallele(da1l1 sjnj 4, and place them in j1e d(1jlnsa4 a circuit, the combination will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in serid+ hif6w2lum)h kw4*f es 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 equival a:h glvgt4qro1x; o(o1o0tu 3ent capacitance of the combination increases. o ato3(g v11t: hl40rogoqxu;

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacito1tqfxvh26o1s rbj )0 1 :fyzpnrs are connected in series to a battery. If a total charge of Q flows from the battery, how much charge does each capac 6bjq t 011fs 1rz:yx)vp2hofnitor 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 capacitors9p)m dyi9uz n-(/fpfb are connected in parallel 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 ck;)4s f+xkybh-j m7 +hmg):qugwd-q j apacitance of the combination increases.dq +:)+y-4 jf;k mmgg7skbq-jh wu)h x

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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 pari.faovzszy,s, /z 6 t: f/n6dqallel to a battery. If a total charge of Q flows from the battery, how much chvztsn,.6/ofiz/z ya df: 6s,q arge 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 Rs1lwj + 3bqcc*C?

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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 batteryj9 ye s*wg+5urf6lv2rp9vx ;b of constant terminal voltage. At the moment contact is prybl;xwrv e+2j6vfg959* us 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 capacitoe9hjk(czcg1junn96( c fq jd .wqn8) 3r are connected in series to an ideal battery of constant terminal vch 9(3gn1ej( )6 .j8ufkz9cdwjcnq qnoltage. At the moment contact 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 conneb*: uj9rgk t/nc +adz3cted in series to an ideal battery of constant terminal voltage. When this system reaches its steadybdu c/t:g9r k* an3+jz-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 shordppgx wuc:ye -6, 24huld

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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 a hgpgdgo6jj* 9 8ir-g-sp5y9 5gr o,cdls b;k2n ammeter 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 jm8 ia(g-er(lmxbn, 0fa9 fi: circuit consisting of one resistorm: i -n gfi0ar ,mj(bxeafl(98 and one battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammeter's shunt 0- jfa.wu ,qvcv21gse 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 voltmeterh7hu zp9 kc8a0 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 resistance of a voltmeter' d+ kmm v;i*w-u)v,wyws 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 a voltme0a1ky/ ia7ko(n7( 3nx rmvlueter across a resistor. What happens ialmyn(k v70o/ 13(7ukn xera to the 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 wf 4w tr6l3g2tjzxh; 8kith 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 ammeter reading,34 fgtjz86rl xth;2kw 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 suqe96k6z9byn( fg o0deries with an ammeter, 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 resi fe byu(gqoz9d6kn906stance 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, and6pp,an7btd qg9m)h + q 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 6.0cpey.w k h55j7cffd-; $\Omega$ 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 6.0 /iozcnw oz;8z *h:5tz$\Omega$ 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 o7 z-:dm bl6asff a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combinati p u3cvf*; efu7 d;6t e,r;c98rhjercqon 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 cq*2f i k8gugqrz:g7-iombination 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 cgy/z4zx5fhb nes+,e,u dx5 -zrf)v:cw5n i)parallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination of ayhy3lktp3*f*m3 tbqx o49o9 d08lirk 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 connectej12n5y6 ,b (+qed x jtm7xiamid to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were ope7+ m xeyxta1b2jinid6,( mq5j rated 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 t5;oku mdm5 m5uq9mt7+ji*zb kkk: c 4100-W light bulbs you can connect in parallel in a 12+ 7 zi* 59m5uk:4dmjbkmutk;k om qc5t0-V circuit 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 2.0q 7zrtu,+a epq; q)4ff zi,-mw9ptzqv43 s) za $\Omega$ 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 3g p+ ohi a+ f82c5n)b965lptu3tbnvhh 0 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, and 10.0 z) b kx fn:g/,sce;g)g4xhs-i0jr b u4$\Omega$ 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 fg hhg i 8cir(t97+mt8and 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 andazrh +*o2qhav 746 ,;qswaqhy 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 5.0 $\Omega$ resistor?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and:z f1o acd3w5xc34pw3le k6ff 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 i-wm/mn(vuh6 vn 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 throufc6n t. s*otife 2kv.2gh $R_2$, 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 thex6oy bv, mlqs 649xosly0()o vbpk:8 l 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 the current inhn; k55:g43mzq.sy ik,mczu e 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 curo 8s)gza 2qdy-ph(;vorent 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+(l)j8 pe pbqh the current 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 point A relative to point C in Frjifv 3*vl j )hq1eb8*kto4(sig. 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 po 9i+4abpke- ldint B relative 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 ig15k+ qv h1en q3n6gepoint C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from the batc 4;vnpsk/(rw ayi;,mtk;4xntery 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 85--brm mt iyuFig. 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 the 7 le6 sntbseoth*v1 0.6$\Omega$ 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 currentn7nq(k.lh fx 4a6wj 4d 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 vv9h5ybq:t l3ca-m:r 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 theex r*r vdpmj6;rm1a6 5 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 theq)) dzp0a;7z)- 1mdw vk vnh8e/jffdw 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 solij8ueu+ a j(qvb u x7l.v1oo.6x,;qtw ud wire connecting the upper left and lower left cornq ;6q o8xuo7a.b,lj .+ 1wu(uj xeuvvters?

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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 connectegl;. -bte 8b ra,ndih4d in series. The equivalent capacitance of this coe.t,l ribhbd4a; n- g8mbination 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 5 k8l7 hvp* bp*ocma*0p0.0 mF capacitors are connected in series across a 12.0-V battery. How much chargeavcp0 lop8hk**m7 *b p 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 ae fb m1m5d3ul4cross a 12.0-V battery. Wha1 lmmb4e3duf 5t 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 connected in serirls (qq/(, fp d)rxps :ob8-ftes across a 3.0-V battery. Wha((o:sb - 8lstr/ ffqr)dp,qpx t is 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 connected in ser9id*iao u5l;l-ek 4 dries across a 3.0-V battery. What is the voltage across the 2.0di9i -rl ;*54 kealoud-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 ib v5xl 0zezy ers dazsu 4ni28m9*85-a 24-V battery. How much energy i 2rns 8*vb 4seye zl0a5d ii5mu9x-zz8s stored in this combination when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, and thi.h/ifyomqw(i f4ho/ 4s pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangemenw/hh(m 4q4. f iiof/yot?

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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 8.7mt: 9ttho y7v00 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 io mtt:97 ytv7hs 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. l;9 ,s0oq8f rctt;chhThe combination is then connected in series with a 12.0-V battery ,cl9; 0qoc tthr8fhs;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 arej8 6a xg74ryrc(,wpn i connected in parallel. The combination is then conng 4c ri8nwy( r,x67pjaected 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 is charged through a ; 22eg:4d1if k2.mgyhbskeey 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 19b;-,a f3 l/wfqzl oh7mdhq a82 V and 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 rr/w:2rpp.x(p6ki0ge r + lqra 0.50-mF capacitor. The capacitor is initially uncharged. The RC combinati r+r:r k pp(e.0g/rilq6rxpw2on 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. It is then connected in series w-0 itndzhq8*hv3yndw :7 z0mcith a 3.0d 8mt:nh00nqc y3z iw-7v*dhz $M\Omega$ 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 resistat*e- hzbbfs:/*k qq+jae m6p5nce 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 resis o:y*b899tz(gfll myltance 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 10z)0p( h.4i zb qxneaw;0 $\Omega$ 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 resistance ofjd.j;,/xuy ddi 7pour)hv 3 i2 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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    总分:102分 及格:61.2分 时间:不限时
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