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习题练习：Physics Unit19: DC Circuits
本习题练习来源于题库网 (https://tiku.one)，是在线习题练习的打印版，您也可以访问本平台网站(https://tiku.one/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 77 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。本试卷的直接作答链接 https://tiku.one/test77.html
 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 termina gh+f 3thlvlyka- 96h9ls of a battery, when no current flows to an external circuit, is referred 3ya9lkh9-6 l +tfvhgh 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 currenxsf7*.bulntrwc. . /re y59snt flows to an external circuit, is referr7yt9nn.5 s..fex/rwlr cbsu* ed to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in series n3nz bjl;7u1lto 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 qk(xdx5+ f1ds in series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series tg(e6 f. ab;pr tmw0 6h5bmo,r1 jwp ho-.ss0xvo a battery. If the current of 12 A flows from-aph gohr5r.jvwtoe6p1 s( xm6m.;bs,00 bwf 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 serdd3eq*aq;swv 2 wu;h: ies to a 12-V battery. What is the voldwe 3:aqw;s2*quh;d vtage 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 -)uo fq of6k2nb9m:lnconstant voltage source, the power supplied by the source:)nb6oml9nufk o2q f-

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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 pdhyma g*dy . ndr00xb ty;)dqp1d,0o- arallel 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 cxjp7bj w;*ira t lr+1 mj7(lr.onnected in parallel, 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 p 5c2vgbpg9kpr (c9p1q arallel to a 12-V battery. What is the voltage of any one of the c5rvbg1 g29c(9 pkppqresistors?

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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. nx 3:efqp 8-0ov q ;ymlymg(mr0i3u7mIf the current of 12 A flows from the battery, how much current flomf: qm0 7v m 3lu;pgy imxery8q3(0o-nws 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 ofkky if)e )o0z4c 0pn.e Christmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the pyoe)ne kik 0fc0z)4.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 parallel5lz c l+gnq c t*p:4u/g/:sjfc to a constant voltage source, the power supplied by the n p:tl /4zgg+ qccfs*l j:c5u/source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each of resistance R. Theydpe( u3w b8a )h-o8zz maximum power each can dissip8zauw o8)bp-d(yhz3e ate 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 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 rulez5djp4bbur /5.
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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 r facmyt-t lig8oi)c wnz* ojo;2 e6;.6ule.
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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 uxao7.u/ i-ik47lh//rtx p psan 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 r qz/ukxom-m3 +e) db4kzlkl 1+ule is an example of

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the equations here is valid for the circuit i4 po*z-)yqcb pig;iy-3ydc 8cz ob34 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 togetg:srp 1.h+ mfza+p uoc x9//fcher in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combinat9p+ f1:m/+ a/ suc zog.rpxfchion 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 po 82 lvb54,)xfhg i.j6gzyw oin series ("+" to "-" to "-" to zgh6l845gi)yfojxbovp w, 2."+"), 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 together in parallel, and(/ bsk4jiwp0x1e ,iab place them in a circuit, the combination will providi0/b,sw(pa4 eij x1b ke

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in series to ao *cw+9sy 7b*rdb : p-lau4zzq 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 d-1eo1re1hn*lg(ju b series, the equivalent capacitance 11h* rduble(oj-g 1n eof the 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 conne y)5db(jtp/es cted in series to a battery. If a total charge of Q flows from the battery, how much charge doe t (ps/bye5)djs 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 capj t2( -vlxrl1qacitors 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 equwla4tf-mnj8 j rt,(1pi-fg ;givalent capacitance of the combination increase ngtpi;wj--tr4lm (j 1g8f,afs.

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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 connectedx.:dy gtz9l pbecb93 1 in parallel to a battery. If a total charge of Q flows from the battery, how much charge3 y9 p x1ltgbz:dcb9.e 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 quantity2ikxr wmf8qp266ej x5 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 connecte g6d zklm.onvt t3 ql8f:(4yb1d in series to an ideal battery of constant terminal voltage. At the moment contact vz:tlg. (3m1oq ndy6 kb4t8lfis 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 connec9w l(jwd20xkg ted in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the r0wj dlkx( g2w9esistor 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 i) x7kz8ra* bg,nlqio)n series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage acrossraq ,zl8)n7o )x *gbki 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 shoul+,ll. d:9l bdplr n8bfd

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can be converted to an ammeter by the ad it/cuc2o4f 0)gkr1ubdition 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 propenbtey2yq-e ( 9wz0cs gdzq+.t .jy*a (rly placing an ammeter in a circuit consisting of one rz ty0 en9j-.qyacqbs+g*.(d(wtzye 2 esistor 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 shunujp06dkhp mw;. ry9;2g8lqo f t 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 voltmetersko)5 cnv2e8t8h 2j/k zi nhz6 )p,sri 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 )zny)x) 5i+nayt3u mzvoltmeter'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 a voltmetx8cl(fu:b*z t er across a resistor. What happens to the total current flowing in thez:lb tu(f *8xc 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 w3iej ; ub+ am+2admrrf2v2q) oith an ammeter, and a voltmeter is placed in parallel across both the +oa2e;vrfb2qu 2ia 3+ rmjd) mresistor 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 ammet -wukm(pcf3 /z5 be cz.-lzmi c5w3q*rer, 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 th be( c5r-k/m.liq-*wc3zz5c wu zm 3fpe 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 xb0/bq/9qh3uexyl54m oys c-d,i w j).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, 5- :i kyvw lq+iye*vc2and 6.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12 4aj,(luy zpxoxe-ypp t/1m-1 , 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 seri w,oy m;l;rp9adf;tv1es 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 intot.ovhp;:af u id +-ue/wb1tqkp (c9;a 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 combinatix 1;:.i5*/tco/etyvc lbgyc fv5 5 lzuon 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 in.f j.6/5o2lrmd,cskn0smvk * 3oz j vuto a 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 p*ajxk3 /lv3b marallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V circuit: 1200-W toastllg)zzu:1n o )5gla8 ger, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total cun1)z ul8g 5oglagzl):rrent 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 szthl v+q7805 jrx8,sa ; myp2 uw3zpnnumber of 100-W light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A circuit breaket5 sv 7hl8j3ma+rnpszyxz2w uq0 ;p8,r?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0j*b+f gdfwf)o fq,(1 x $\Omega$ 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 an7. the/ zfr-vzh*o pb)k3dc8md 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.i/xzjl6 a+dggy 63al )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 andf5r6xy jd6psuo2x / /m 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 3z tnadd+ g0e9$\Omega$ 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-cmn5i, :vx.jk gp;a1z 6tfpx 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-:gfav/ 46ycuj 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 througi 8e1dr-i;yovlxwi +)2nbv(s3gc1 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 cirw p li v(eb;)zb8tch-+ jm+n:jcuit 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(t.,st lai uby:r; l dd89sflq/y1p9t 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 Fh qfn*w(2: djm (s5u5gbfg9 y ea)oz8big. 19-4, determine the current in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the curp6wuz8 g omgkpe)gx7d5t,k 11rent 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 p+rf eofnl5u0mlh-rcc1owc .1a984xC 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 pointaphw xi aty+ 8;o+ix;,s ,yc9ay ge1f: 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 potentia (nla5:cai:msl of point D relative to point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from the battery in 75+-zzvbtnk zl*is3 fd i)kq1 Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A to point B in Fig. 19-v*.j lp),q ysr5?


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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 cwh:a0r(ewn*e,xei -2p 9 tcx $\Omega$ 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 ,vy)ziz -oq3z dnm .4tbemxmzsb 7(.38 $\Omega$ 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 -gsr+f auai7ujc/ f6+ 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 the 12(xm +m:.c vbmo.ynmd( $\Omega$ 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/fi-+1 2 yyd av8qezkb 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upper left an k2z,gjmpy ien+lc;kvt4 ,0go0)r.ty d lower left corners? 4trlicy2 k+m,,v zo e0jp)kn0tgg;y.

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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 arb wb4 4d nye18eta*9fqe connected in series. The equivalent capacitance of this combinat e1ew* 9ft4yd4b8 aqbnion is

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in6nnle6l- ,w 9o pjn7qu series across a 12.0-V battery. How 6 -jpnnwu7qo, 6 le9lnmuch 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 +ti1f:ee3 vu4o6sm bh 50.0 mF capacitors are connected in series across a 12.0-V battery. What is the potentiateiv34e6+1uo smh :bfl 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 ifj6-4c t)sb ;lpus-st6weeh ( (v* jdln series across a 3.0-V battery. What is tht t4p-s hvcefu6ss;l db(6)e*l-w j j(e 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 capacitrachn/djm/yh :-znh lsll5c8 (+s p8-or are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF capar- mnns+/cp y lllhc58d /as(j:zh-h8citor?

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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 jdbt3gis 9,f7j 1o-ct .i cf t8ym)2muy.;bflcapacitors are connected in parallel across a 24-V battery. How much energy is stored in this 1y yt7 u ft lcob.bj s;,.9i)cfg-f8dt imjm32combination 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 ; jp)lxa8ho 8p2/bxjbconnected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of this arra/x)j8j2ob; p bxpl8 hangement?

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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 co jabgbe4w )bby (hipo6b):/3ombination is theno:opgb)bw b6e b/i(jbh)3a 4y connected in series with a 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 8.0ij5y: 68gs,lpmrx u-2tr7iec 0 mF are connected in parallel. The combination is then connected iip 7gi mcy:5 8,u2-rl exj6strn 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 cokw:1g4w7m j si9/r/t e.mrdfeq- osz,,wo z -unnected in parallel. The combination is then connected in series wi9djz er ow kroet,wmw,-f ig-:q/usz 4/ m1.7sth 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 throug ),dnba1c9 52i;wmijvks cuh 9h 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 through m0xf 0h *ha kil4ngp7j6 5lpm5a $4.0 \times 10^{6} \; \Omega$ 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 f8bk+yew ed8..50-mF capacitor. The capacitor is initially uncharged.e k8 +8bwdyef. 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 to 6.0-V. It is then connected in serv0;cp0 q/f( 0xnddk klies with a 3.fdc xk0p0vk0 lq; n(d/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 intl :e8j7/s zz5mavif e(-yt i:azc.;3ialqe6ternal 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 coil wm k:kj-rd 1badg73wi 0ith 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 rv/) z5,snzn4r*l bb x8+xbr tyesistance 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 resistanr/g v;t 52ggicce 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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