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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 terminalsa/ mkjg:.nt0 ki.1as x of a battery, when no current flows to an external circuit, is r. /1xka0:mkintjsag . eferred 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 omr)8r5f8 wnto535bxx(ano fj f a battery, when current flows to an external circuit, is referred to as tho85x w)5t rf5nr8o3fxb (jnmae

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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 resire w /xuff2j;),zl kf4stors are 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 connej3+l:ccwu )wi4ud xkb nw.g eq1/( 2aicted 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 to a ba9s uxtfy5**vdttery. If the current of 12 A flows from the battery, hu 5 xyt*ds*fv9ow 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 connf/oq9b 2d oahf0.g(fqected in series to a 12-V battery. What is the voltage acb0afo9 q(fqdoh2f g/ .ross 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 ar(tc vk4vcs ,:ae added in series to a constant voltage source, the power supplied byvka4c :t(c,sv 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 p2qvq3 i-zu*l *vubn e3arallel 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 that vxhy),f.-4x fc zbog7

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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 parallel to a 12-V battery. Whaty+,d7gfgp )tx8l/ r zq is the volta8qz7dg g/l,)ry +fxptge of any one of the resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in par rmce 5t4drs111tc-bdallel to a battery. If the current of 12 A flows from the battery, 4t- d1bscm151 redc trhow 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 tree lights are connected in parallel34 bf8k/.e*xjrc aqzl . What happens if one lamp burns out? (Assume neglelqf .3 /rkbaz4*j x8cigible 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 parallel to ar-vn2u ild+d9 constant voltage source, the power supplied by the source+d29ru iv d-nl

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identialb+26ovdd s t.prw.6cal resistors, each of resistance R. The maximum power each cd.pwo2 a s r6b6vd+tl.an 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 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 junc( ; 5 qt-fcdbj.bbk:k u5jj: 3abxxd8jtion 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 lo9 bpmwy2j3nr3 op 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 rule is an exa-9-,y( sgzx)o; er:aiw+pcjthyen 0i mple 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 ypuyh,ku gnqd gy(+jo8,bh3 -l0zicg5.v p7-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 vfz qh(n7 b6c(-phx36puj3 kp falid 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 selkh42xf tq sc(--srr9 ries ("+" to "-" to "+" to "-"), and place them-qlh rx-ss9 cfr24t(k 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 batterigugtebcfo:us0i ) -.gq3a; p(6m zmr.es together in series ("+" to "-" to "-" to "+"), and place them in a circuiia-mt mu 3u);0bg(csgq:o.6rp e gf. zt, 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 identic4gaj d9pt oz0yu3af)t sn28;pal storage batteries together in parallel, and place them in a circuit, the combina3zf8)ap9a 0 2ytnos ;4gjdtp ution 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 cap/)7zqpeo x+5cfnxn1 ex rl5d7 acitors 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 connected in 48gf t3kw im;yy+q4rn series, the equivalent capacitance o8m3t wy;g f4yni4+qkr f 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 connected in series to a ba0mogy9z+ u/ucttery. If a total charge of Q flows from the batterm90y u/o +czugy, 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 paralle3vxis5 vxzwns5 .7:jq fn2eh 7l 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(2dyl +/f6zw7glv ro d equivalent capacitance of the combination incre7gyflo/ +r 2vdzw6 l(dases.

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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 para 7 cptqu; h.0j34e dkf2adw:wpllel to a battery. If a total cwt 0 e2;wpfju3dc47.pad: qhkharge 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 for)-u/7knlpxs .4+ )gwt jkgrux 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 i/lj- oh85)qhx yj5it njk 99ipn series to an ideal battery of constant terminal voltage. At the moment contact is my5qo/xi )l5ijpjn h 9tk h-9j8ade 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 series to an idupdq mi o7 ;w:*x3v:xdeal battery of constant terminal voltage. At the moment contact is made with the battery, the volt: *v;up:w3dqmxxid 7o age 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 arac0e8rs 1/dsjl qtv e7(t ej)v:n(*dw e connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across thd ce)1rss j q*7wvt:d( a8vejnet0 (/le 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 shoulq ,; u7yaiqzq3fwlw+7i0mv4gd

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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 3-j pk3x7te u -wn/rvjbb-vq,n 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 plac4b kbx(1 9vozv3apf+ ving an ammeter in a circuit consisting of one resistor and onokv pv9 v4z+3b bx1af(e 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 am: oc6*ijt t(ntmeter'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 00xnvsn, 9qjz cg/i3h1ptsw (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 ujig 9y6w1:rs9d)wtyr .ult9 of a voltmeter's series resistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a voltmehh:u/ 4rzq) eoa *,cuj7i)zj wter across a resistor. What happens to the total currenturc/jio huwh4)jaq) *ze z7,: 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 with an ammeter, and a voltmeter is pnmap3yrb9. ,ulaced 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 dib.3arumy9 ,pn viding 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 wirem9mie z3 aaqd79 o*0 9east4qhd in series with an ammeter, and a voltmeter is placed in parallel across the resistor only. This netwoi qetaa9msmz4*3 qa 0799oh edrk 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, 5.0, and 4.0:rp*f0-h7exm s bccr6 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and 6.0 k/ju-j) z f;xzq)4;k,w jicv g$\Omega$ 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,( 4wbhi 7,w6h9s* valrho ,vjs 12, 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 i3*nxzu m:p ;3ot ewu)wf6cn0/t jp+xfnto 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 flows2x), 6g* binryn;r uhg0p8ken into 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 co:,35c7khwr(nwa : q y a,mtalmmbination 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 parallel combinationrqknk,h/7r)jrn2ype i ;5ke7 dvhw) 9 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 2p3 p;ng(;v qe/j p5/wc bkggza 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-W toastmh/f/qh h57ifodlh )yc3,1a ei(g 9nser, 650-W coffee lmn ai5c7,s/) o9/df i 1hh(ygqhhe3fpot, 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 1mro 9mbbdq6 vexzbdm 3;a2:)light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A circ63b);bvd dq zma ox9me2m:b1 ruit 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 ,cmi(rl cyd ,0qfz1 /i$\Omega$ 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 30uod:o *wfa,klz1sd 21 $\Omega$ 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, 6.02wahhoc86fd k bckw, 3bok ew8h 4;(9o, 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 and 9v9omzx/q(9f*4w mp u -:ov9 jhs3ioca.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 5.00zdywidax3lr0ztj4 zu8p3 04 b7,8 geqfl 2cb and 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 andty;a wq .nlk z/in( 1enaol2-3 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. 19-2? 1lf+ h 8uryy1 ,(ysvzs


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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 ,jwo fnz32+nk$R_2$, 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 resistanclh a*v 0c0fq.mgp/m s4e of the 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. 19-4d fkyqgs3sx (3q5,te 1, determine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine gz966e;maj6y q fem6l/eu9bn7:x fzrthe 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 current8 rpgu(2i8s0dro m(le 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* nyqmf)8+m mf point 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 Figr+d1zahc r+1 z. 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 poim(,2jzh:ne 2.ppug(rsaee m9 nt 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 Fig. 19y3c7i h,efyy ) ey.v,xal / ih29iud fzjm(i+;-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 pointi6h+yal ; d6bdj evnlh3 d5cb2n92x4i 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 currentjckez85)8 rd 4nvgy;w in 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 8ets(d4 2.+qdwmd*bo :chwc k)0h- sii $\Omega$ 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 v z sy z3 1tusv)a1;t-c8gpz4o4 $\Omega$ 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 12g g270t9cc, )de pcoxt $\Omega$ 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 18/8lk d5o64)4m wxa0m/lf y tvhsn-xbz $\Omega$ 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 lnhbr l7 m83:q9odu:5rkyhh: 1zta b:e eft and lower left corners?:uh5ha o1bd:brrhl8n e9: 3zt7 qyk:m

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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.yfkdg2 9ylc k 064e9bkur9meni+-glo t /8tr- The equivalent capacitance of this combingend- i6korb9 e9ytg094rymt 8lu kcf-/lk+2ation 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 /gyzx+,mryv: are connected in series across a 12.0-V batgy/z:y+ m,xvrtery. 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 ab:y4 dxczkkc +k9vy 3- 12.0-V battery. What is y3cb9k: -xc zyd+kkv4the 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 arz.avq,heupd e ,8:l)h e connected in series across a 3.0-V battery. What is the voltage acrosqepuz,,h 8l. vae :dh)s 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 se . fstwxz6l)r31xfv+qzta(,s-7 sz across a 3.0-V battery. What is the v6t(-sxr sv,)+zq e xz1afsf.lws73tz oltage 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 capac*;dv bei dw1p;itors are connected in parallel across a 24-V battery. How muchbd *;ivde;w1p energy is 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 connec +qls s(. va2bda2fbmq*2 cx3zted in parallel, and this pair is then cq.l2*s+ (av3bqxdsfcm baz22onnected in 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 / 4e7g7):l bczp iietdh avbts)0 3mv+connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF cazes g la):bvc t+ 43t/p7h)b iedi7m0vpacitor. 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 ark ahymm7:f qh52z *f +bx.9cmee connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF5hfhm .2mz 7:b+ 9*eax mckfyq 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 connectkf wdd:2l*wu: ed in parallel. 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 6.00-m: 2ud:k l*fwwdF 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 thakajsv8e ( v7a8km9* drough 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 (emka/el u)x7l.fi k:lxf 8* -r6bkel charged 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 capacitor. 6 ,;ayeh* ppglThe capacitor is in*gph apyel, 6;itially 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 to 6.0-V. It is then connecteh28yral t l2x3k2rm7 md in series with a 33r rm2yl8x2hma k 2lt7.0 $M\Omega$ 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 resistadfziutrt1ey p,-u+ w k7 93ws3vnln5:nce 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 resist0g2gvz,x +pfk nd9r5l ance 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 resistancehqu7++ :y25packcbot7b - odx 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 resiea7sooqb38 ehb7:kh1fq, d5gstance 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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