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习题练习：Physics Unit19: DC Circuits
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 作者: admin  发布日期: 2022-08-17 15:49    总分: 102分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月17日 12:52  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminals of z:0eaa/w(q rtsn9o v z(0akz3a battery, when no current flows to an external ci93aov 0zrazzw/(tqkne:a s0(rcuit, 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 l iel3-*mqhzhx,uyt9qo0 k,8between the terminals of a battery, when current flows to a-e* zhthio9ymq0 l3xk ,uq8,l n external circuit, 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 ag+v6 8d +e90 icqachdkre 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 conoov/mub t,u( 5nected 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 cyjh ;smjxa3 s71 t5/4wkpv2u gonnected in series to a battery. If the current of 12 A flows from the battery, how much current flowsspx 5 w7; gtj/sha 3y4jmuvk21 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 connecteh62 :wfxxlxt;at2 +csd in series to a 12-V battery. What is the voltage across any o haf+x2clxt:wx; s62tne 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 z cie1dmb(8,kbl 7w* jin series to a constant voltage source, the power supplied bye(b8 id1k zb*lj7,cwm 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 connecteapbq ajqj5. ;o,;f2gx w+lqq) fz+p.yy7sh /pd 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 connect r2f;x)o5n3mdbj8qfrp:du)b ed 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 con nxtnw y8bck-j59+p4lnected in parallel to a 12-V battery. What is the voltage of any one of the renx 49-bn 5 +8tlwjpkycsistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a battery. If the curren,2g3wskg)i) v1ge z ax9bdu)kt of 12 A flows from the battery, how much current flows thrka2 s)ugw3g d9biz)g)ek,x 1v ough 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; w:titsh:)xf are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the witf)x;::t ihws res leading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in parallel to a constant voltage sources:s1bf kd)agp cm94+ j, the power supplied by td1p+:s)mc fj 4g9akbs he 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 resist0ajn c04cbl*72innv m ance 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 jln4 0bnc20*7miva cn 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 go-qnm4s(5 l 9z jf+zjizs:k/ 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 lo-l,rjo1 0v3ii7 gjs fzop rule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rulego(fj7 2b)zvi is an example of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction rule is5thcln+0cq7kt z 2x mde9m b+* 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 /9 nwkm 1b6jkv0ej.d6(xup;yixw *r ohere 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 ident1xktvqnbe,**t,ap z4f3 -pl mical storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination* 3 xnapf,1tv4* eq-,kmptzbl 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 togethb( ,rn-nku 6 j1ejx3g. jbr0tber in series ("+" to "-" to "-"rjxr1e j g-jbkn(60. t3nub,b 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 st quzkrx26g)e nmk3 /cs )jw*/q9(np, an0 ckbvorage batteries together in parallel, and place them in a circuit, the gr) q n*zs kn,(k0b )2v6 qa/3cmpjunxwk/ 9eccombination 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 ar7vo hr.i7 pzdqu)s1j( e connected in series to a battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in series, the equivalent capacitan ot8hx6ytv :o9 vz nx:+2yq0qkce of the comkt8xvy nt2 h :o0q9+xzyvo :6qbination 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 connected in series to a bat(.u wfkfc,:v stery. If a total charge of Q flows from the battery, how much charge .: ,kucfw sv(fdoes 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 capa6sy0s; hd6;d .tbtfz2 c4civrcitors 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 capacxlq4oeoth r/6:zh l( s5ys+i -itors are connected in parallel, the equivalent capacitance of the combinathq l/+(yoohsr 6ise5 t:lx4-z ion 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 cotb+cqfvt/xirv 5, - ,ennected in parallel to a battery. If a total charge of Q flows from the battery, iv,5eq/ +vb x ,tc-tfrhow much charge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the quantity RC?vg1 vsed ) m(whx4*l.a

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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 connect :znjhb3epx4,wz6:e ded in series to an ideal battery of constant terminal voltagezj4:edpzx:w,3nh eb6. 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 connectedn+ d;.(nl qym3wy7qzs in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the d+yms(nwy .7l;q3 nqzvoltage 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 to an ideal /pb04qfnzjx2kd,9-kdx 9 v p0f+ ktlf battery of constant terminal vpf4v-xz,nk/l0f 9j2t0kq xd+d9k p b foltage. When 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 shouldj ic6rz8 *9nr+ze dj )lkzw4;q

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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 additio ;qdttvr9d1( *j r+ltty (9o ) az6btfs*g)bpan 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 obbe(t6dq+klqg)ktk g- y,w 9z02k3b vv tained by properly placing an ammeter in a circuit consisting of one resistor and one battery. As a ret+l(kbqv d-q69 kke0g3y,2vkbgz )wtsult,

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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 resist r 88/,o8jlx sphoot/oance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construct a voltmeter from a galvanometer, ov ;emd)*l7my hdw lg;7ne normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmeter's series resistanccvg+n 6q5hw)9h u.u6 l,fhk nje

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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 qc, v9s/wgip7 a voltmeter across a resistor. What happens to the total current flowing7/ cq gpiwv9,s 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 with an ammeter, and a *g6 p6*f qqn/ swmu3xj ;flwo: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 / 6o*swupj:fx;3wq mf*nglq6reading 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 withvl8 kde5:: jfg-e/qn*wrcdb 4 an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a batterblk-w:vdnc*4fderj q/e :5 8g y. 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, 5.0, and a3irt+tfxf -v8no09 -cb t jg 7wfw6zk f:,sg-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, ani5 fm,)0 zrqdwd 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, 1 d*4xvqoy*m .+sofii1 wf-q9u 2, 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 int. -i.ub(gwwzy o 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 r2yvhe fj8d** 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 pnw/-gf ve.0qh arallel combination 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 pk/k+ 0u-: yep96 znayvhib 1cbarallel 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 inr;exphl4 (r+ 0r ho0vlto a parallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V circuit: 1200*;9 a+ds/hdonix- gaw-W toaster, 650-W coff*ih x-+w do9a;dg/ sanee 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 in pacils rv ;xv ;tsy7*36krallel in a 120-V circuit without tripping a tksc;v r; *xivy76s3 l20-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 k+ t1pq v8e yojsns-o,0 67vmv$\Omega$ 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 30 olu)58 bj i+u m+,gnww$\Omega$ 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 t wj2 :lt:4wzq$\Omega$ 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 9i; + w dauyypq(,qa0rub :pey9w9y*f1 .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 :81 ejb0yvcur9.0 $\Omega$ 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 an 8 xxta0)tpjg,d 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 circuitc av w7et44sb: 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 throughbop23b:i 5kowca o* 4)fnamt - $R_2$, 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 Fig. 1bu8 j3fzllu5 /9-3?


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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 ;o 8kip:lpbrq30,llwin 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, dete83*8vea1e(d p cde1bxwi hngt -* 2awprmine 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 the;g i5vy2we*- 9bx oczv 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 p gywljcfb(yr(y hr k129+5 ec8oint A relative 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 relative to point C in Fig. 19-5?uuhq6e 0rfuprz5 ;f91


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point D relative to point C in Fig. 19-5 q jc)jik0b2xrk))i5x?


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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 m/ sj71* czto.cxu/jcthe 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 point Aqd5s y.en4xwmts6m0zb a/hi t:5n7 3c 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 82n+zn/v2wjxeta x 3ithe 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 n:qgsaoi u/kxw, c41 :h,8 xfkthe 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 )gl8bpv;ltvoj9r)h a6m5 i f(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 themd;6 sv fi15wf 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 9yjee ht/:b0vcfv87 r18 $\Omega$ 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 and;p*z/y(s vck8qjea 5p (s i3nl lower left coczi;ss*(pep35lnyk j q a/8v(rners?

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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 serievizr 5agja0xt*8*egk i * ye;e1ork5 (s. The equivalent capacitance of this com0a;g 8rxzyi 5k*5orket 1(vj i ea*eg*bination 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 in series 1mj:xailf52 ret 6x,k(e 67i 7 d:o5g utqdeciacross a 12.0-V qx :dx7cre5meo5jlu6(:a176 g2tte d ii, ik fbattery. How much charge is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series across as8ja-p7 at /fz : i,::plyjxt0xj co8u 12.0-V batteryoa8s t0,ual - /7:j8jtxc: jyizxpp:f. What 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 capacid(w hh2e8u -rgtor are connected in series across a 3.0-V battery. What is the voltage across the 1 2ehuw8 -h(rdg.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 acr hi:dbr dn*3m:oss a 3.0-V battery. What is the volt3ndmd*: i r:bhage 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 capa5a3l6thx m81 hg cxez;citors are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are fully l 5;8hgzcaxh1m3 txe6charged?

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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.,jwua0moj d5 20 mF are connected in parallel, and this pair is then connected iwajjom, 5d .u0n series with a 30-mF capacitor. What is the equivalent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. The combinationr +85+o qhzlv vvvebej;: a:c8 i04knk is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent cac0a5v:eko8vq hvj:;+84nbi r+lekv z pacitance?

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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 ah4ls wz)jv /g:nd 8.00 mF are connected in parallel. The combination is then connected in series wi: /zwgvl4hs)j th 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. 8uh1kwjbx /lig:s . ym+zte)aqcp5); The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across the a+ky/1; jbsl g)x zeuw5hi):qtm.c 8p6.00-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 char1h.n-b c t:pnf2zkm2zcc3 ujmsgw- -9 ged 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 charg 2(iuk2at*u 8eys cv5wed to 12 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 a 0.50-mF capl5l+ 6 .j 2bzh .r6vjlgfcmo;gacitor. The capacitor is initially vmoggcjrlbl . ;fhl25+j66 .zuncharged. 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 cyrxe3 0 mldo3fy9pc4 l9-n2 ihharged to 6.0-V. It is then connected in series with a 3 fi 3lcx3ynh pd y20eol-4mr99.0 $M\Omega$ 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 ;gjs7ui i7d :jw;yvx1 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 with a resistance of tr;6g lej 3g8oy;3s ta:9 zooi24.0 $\Omega$. 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 +sb6v5jtc+ fc p 824aauhyag6 internal 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 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 k3 beqi6 r2xwnbi (xr1d2htgpn3+u 31a coil resistance of 40.0 $\Omega$ deflects full scale for a current of 2.0 mA. What series resistance should be used with this galvanometer in order to construct a voltmeter that deflects full scale for 50 V?

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