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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 terminalaxy8zmhaq/xz,nv h b1;;qd(+v:n 9 a xs of a battery, when no current flows to an external circuit, (xx vzm;a,+q 1yb v8:hxad/hn n qaz9;is referred to as the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminals of a+ /:ixzb+pzn,ge/s p x battery, when current flows to an external circuit, is referred to+gp,s+xxez //:piz n b 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 resistornw-,a53ab22 z 9hwzddy) mcors 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 connected in see *i)ur)* i5ydccg 7 ;wq4 rdzma .i1dxr,,xvdries,

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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 seri x1d 7 g+pa:akl6.fzcyes to a battery. If the current of 12 A flows fcx :gkl6+pa afz.1dy7rom 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 isb2g zpu4f (si0 thf ubgs2z04p(ie voltage 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 ar7j+nmio9te 4ncve9fq n.)0k 7bi .iledx/0 ize added in series to a constant voltage source, the power supplied by thd.bfeei 0xven9c4o77 n9k)nii+tjil /m q0 z. e 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 n.;mw3x.z69 r+y v;unvd oyfhin parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parxyc 2j:w5bcd -allel, 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 ct s 07xlahve*;onnected in parallel to a 12-V battery. What is the voltagx l;e0*tha sv7e 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 parallel to a battery. Ifrh6* 6fqyaxr05)xqy fmgup 8( the current of 12 A flows from the battery, how much current flows through anyqap8) gf x*u05rx myqhy r6(6f 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 co36rr8 me mzz.tnnected in parallel. What happens if one lamp burns out? (Assume negligible resistancre.8 z36tmzrme in the wires leading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in parallel to a constant voltagex7f,7nc 9;o zpyww:vn source, the power supplied 7pw9 n cwn:vox7,y;z fby 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 of resistance R. The maximumg dj1n+ qb8k2r) bmpw6 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 maxib8)+26qp g mdwkr 1njbmum 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 ru up(abo :wr)xx6p1p6dle.
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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 rule. ;oii8rf psk(.
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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 example hr 7f)nx,fl;qof

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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 yvfq3+v-x*a xule 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 /p:r ,,j ur snze jq3h.wmd(u3here 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 tocg6mwmi-( m/nlqa,s ( gether in series ("+" to "-" to "+" to "-"), and place them imi mq(nmsw(6l cg/-,a n a circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("+" 6h8qcj)n 7ap2 yhnq8 k5k5lpqto "-" to "-" to "+"), and place them in a circuit, the combinatioqjcnpp8 qlk5a)khn7hy q28 6 5n 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 paralt)tjjo 4s)r()ptf2d u ce.h) plel, and place them in a circuit, the combination will t4jj ) shtut)( e2orp.p )dc)fprovide

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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 capaci) p11gu,*v a3k t.trkwp wqkl1tors 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 series, the equivalent capacitaitugii-nianf4;i f0, cj;:9vnce of the combination :uc0if t,jn4giia -vni9;i f;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 2eq5hrn (6*g.d hsv saa battery. If a total charge of Q flows from the batthr25s *(6 .vqegnhda sery, how much charge does each capacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in parallel to a batterx+xws r+uo;7 qy,

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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 con58c 4ya,jl zqunected in parallel, the equivalent capacitance oy,alzjcq8u4 5f the combination 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 a(zs36hp0y s2o ++i;tyifug aii)3fiire connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each ziyst+uo ip6gf)a3iif20s3( hi;+ iycapacitor 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 xfwe pnd3n;j(+a+k( ithe 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 capac.a1lr(2k+0jg 1uzl(srp e qxbx1ob 9xitor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acr(gq. 19x2 jbo0s 1e +z (u1rbpkxrxlaloss 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 capacix xd:f;z8wp:dnvj f: 9tor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the v:wf98vx:dp :fd nz;xjoltage 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 cmv/8c iponmmqx:.,ouh /.9 r series to an ideal battery of constant terminal voltage. When this system reaches its steady-state,m8hcvromo., 9/ .nmcu:p/ xiq 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 shou edj8n6sfj6olqq;+j5ce0 )a mabh+k( ld

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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)6zfxyn fvjub3//m h4n 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 obtaine)pvbk rz 9y 8cx6u/ )oo*9suofd by properly placing an ammeter in a circuit consisting of one resistor ansu8oo r)k9* ozy cb/x69)fpu vd 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 amimyg()fsj;dfg9 xe 849et/nameter'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 vol i vmiq1 -gp:ude-z c6v0agb4ddoqu:s201kd)tmeter 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 resisttx 9wu rde/:e t vq.wkok8v:.rrks(6vh d :0.sance 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 vom+o (;8 c1stqpmc+;bwsz/-tx j jv8wlltmeter across a resistor. What happens to the total current flowing in the circuit as a result of this action?+sb(j xptcl qmw8-1 ctw/m;jvzs o+ 8;

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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 a08lp pi(jvq) a voltmeter is placed in parallel across both thepl qij)0av( 8p 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, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, and ./bh9xu oym1i 4lug1 aa voltmeter is placed in parallel across the resistor onll1/uhb imox9yag 1.u4y. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0, auur b:k0ep6 1snd 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 9spe+s ,(u q.xcd)ztd, 12, and 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,k-mmpr 7p7 mgr4v-vy5 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 series combination of tj1.har+k1- llsl e7ea 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 combinatn vwp5mgb;;4eeno b +m8+.vxf ion 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 ;2bx50xpoet cbj2* fo vrpq 47a parallel 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 parallel sa /v/sgi mg6:kx-j8 ycombination 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 combinati.b aljl ; .1 lj6fsgqnpc5p+)mon 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 appliashq w 5q xx))ch+bk3j,07 eu6nh.ej ornces are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-0h7x . jwsk))+ce5huqbn6oq,ejr3 hx 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 par np;cq0ek)f( ;widjf5allel in a 120-V circuic0d5jne)fi f (;wk;qpt 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 2.0 ti : d.7 6ygmbqm nryszm- .m.4;ll/ao$\Omega$ 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 8s*zd 2y +n7w.bx9clzxs rjivj1s+- a30 $\Omega$ 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 4kw 4 ;;yqm * gc8f2cr4n9imkiq.0, 6.0, 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 and 9+ a.bxvo.q.jg .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 antwe6-( .mvq 7au.qoo(f ik2ezd 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 9.05)e8y2qi ubok(w 5w ag $\Omega$ 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 Fia5)fqhdu7 vqu4o c0n3 woa m4*a;nl;ig. 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 throug hgm+9+ myknz,h $R_2$, 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 o ,om8ws 6*uhq3o7tbg ef 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. 19-4, determine the curredzzfpec :cisk9n1,a .76vl8 x 4+j rswnt 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, determz, x h.wg3 onc+uv9zir)f)q*n ine 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 curren -k bj;tv5u4k0rmve l6xka6,it 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 relae.3iwv kh d93otive 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 relativ) 5ngp ke.dum)uv70 sse 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 poinq11xchvca at/ 60 ipr (mer4f3t 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.ebmcukl//tp,;m ew9 b t2+gw; 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 poi x4/s7za b+ezzs;lvo )t, )risnt 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 i94c *qxomot8 t;yc f5bn 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 in4:0 m 6jt g-qkp-*b ,3jkoyunzdoftlt5,qqo) 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 the oy h8xz a95-:okign,f u7e pb*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 th cia c2p*z+br,e 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 1873(: 5 li(0hzpogbn e;xk kppl $\Omega$ 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 lefthljc 2e.l ;lmpu+v 8:i and lower left cornersl8+i jlh; l vp2.uec: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. The equivale05;ju8 -e itjkhpm0 tznt capacitance of this combination is 0 e- ijkz0;8mptjut5h

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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.yy:kxv6 *b2jgo 3l xu80 mF capacitors are connected in series across a 12.0-V battery. How much charge is8 k*v gxu3 y6xb:2ojly 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 5vj:lq- tonh pz-y1:eacross a 12.0-V znle- p-hqj:1vyo:5t battery. 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 capacitor are connected in series across a 3.0-V bat 0gm)kp7xrbg0 j8x cb,w;epa)tery. What is the voltaggw0gx0;7 p p)be )ar ckbj,xm8e 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 sericw7fk+w +d/ vtes across a 3.0-V battery. What is the voltage across the 2.0-mF cafk+d7w+ / wtvcpacitor?

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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 par y 3xfooo: r*:zg2 h5v3ynv4giallel across a 24-V battery. How much energy is stored in : :g r4vyf* i5gx yovon3o2z3hthis 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 1e( zzlk6l63oeafd +emF are connected in parallel, and this pair is then connected in series with a 30-mF capacitold6z a6z (ee e3+fkl1or. 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 combina(ac:wlnf ghp:7 9x9vaw+9ea stion is then connected in series with a 12.0-V batngs9:v:a +wp9exawl h9cf 7( atery 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 : 9nwsenzah , gn/gxr+s66(g u8.00 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 is the chargezngu ,6 agnn6r9wgxh(+/se s : 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 pa1atcf1sb4t/um /3ciu rallel. The combination is then connected in series with c14itmafb u /sc/t1u3a 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 throudf8 f2vfi- jpw3b*l tid80q :3faapg(gh 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 a 97v4gyyh x zj . /1rjq0jsjwb;$4.0 \times 10^{6} \; \Omega$ 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. The capacxx y.j6 8wlbz(itor is initially uncharged. The RC combination is charged by a 9.0-V ba 6l8xbj yz(xw.ttery. 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. +()4cenpl ,2. g 6yiryc6zs iu9zx rchIt is then connected in series with a 3.c9+ l.z,p() 4yhuc cizsre6n y xr2g6i0 $M\Omega$ 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 m:u fr-;i k3ysresistance 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 ghsag 7v i1h-7resistance 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 interni;s y: 2k6enuo:+zi39x mcll xal 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 a coil resistap6,nmnclv9-esqr ;5g nce 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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