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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 a battery, when no :s9(ete tzm w.current flows to an external c etw 9:.zet(msircuit, 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 8*sjyi2wtk :mz:n08ny fgf9ha battery, when current flows to an external circuit, is referr 0y sz2tfmn:j 9kg:8nhwy8f i*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 to a battdnstw hjt(7 fbxd z)5em( ,.a:ery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connecm2bmc9( dp+li ted 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 2m q +-ozp9vzgqzj 9v3p 5x+lkseries to a battery. If the current of 12 A fl qjo9lqv+-g9xz pzk3p2v+mz5 ows from 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 c9pay8q4c q,t sonnected in series to a 12-V battery. What is the voltage across any one of the resistors?y8q4s pt9,ca q

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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 constant voltage slh-n8(k5u m0b wos 3iyource, the power suppl5 isbnw 0u3h(k8m-y olied by the source

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are cq*b.e -+m3qux ki4cm aonnected 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 connected inbx.,s/+a tioo1q :tld 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 parallel to a 12-V batte(n) yq0h zzhm*xawoi k9.(tj-ry. What is the voltage of any one of th 0hi.hat-qnzk9o *) w(z yjm(xe 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 y:rf9/ bcbtm* in parallel to a battery. If the current of 12 A flows from the battery, how much current fl:f/9 * cbrmbtyows 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 Chrk+e0xmu4xx,fn f28( q( foi3 z.dyx7u5zjhiristmas tree lights are connected in parallel. What happens if one lamp burns ouxh k7. f2jxxi5f zydnm3qo(ui 4f8e +ru,0z(xt? (Assume negligible resistance in the wires leading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in parallel to a constant voltag*g q*g3;im:llf6sfy; ap2rpt e source, the power suppam y3 q tggslfi rp;;f:2p**6llied by the source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each o) ac nb/geg-f4f resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in pagbnc4e/ )gaf -rallel 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 rulrhdt0 8ts,kb- e.
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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 rul c.v 23g3 batwf 0+)ucetwca:se.
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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 t*ho)tx */+buz5md- vx os+pdis 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 runv8x ;lh:1;0;j 66o jxll1phbtkzv co le 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 shownum rg cn7 +s;hahyjw4 9(n)z0h?


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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 series ("+" to "- g6 ,uek 0jl*(zgfvus;+ q6aao" to "+" to "-"), and place them in a circuit, j o;q*0 gfs (ak 6gev6ua+ulz,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 togsu)1y4nniib l4sh 04vb c/g6q ether in series ("+" to "-" to "-" to "+"), and pub 4 qs)/n0s1gyc4 6nilb v4hilace 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 batteriey+ vd;m9 vwpjo+b2:zqvbt/pa 01lt-p s together in parallel, and place them in a circuit, the combinati vmwt1zp p-j/v;bp l9yto+d+av: bq20on will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in se( sbv7.g(vr sko7qu) bries 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 c qind7)goo 5, s+z8nwgapacitance of thq 7z)ig+ dn8w,5gsno oe 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 capacitorsjj1rus4iy ,2xym u akq7x(o/ - are connected in series to a battery. If a total charge of Q flows from the battery, how much cha- xjo/ryuyjxiua 7q( 14sk2m, rge 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 capacitoro1s.zyx;dkogr)spos+/l4cx 2m 7 i x3s 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, d-90,hc 3lta 2f lltkcthe equivalent capacitance of tdc3l-kc0 2h,l afl9tthe 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 are connect5d0me, :gs2d3g9 b)rztb m1t;wvsaa ted in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carryssemrd z);1b2tamdatb,t 5w: g39gv 0?

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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 Rce7c5 h p-jo0kC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal battery of consta)/.ih f0xvwf nqcre +3nt terminal voltage. At the moment contact is made with the battery, the voltage across trh. iqf/xv3+w 0fcn)ehe 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 serie6rcmkt/dc7a9ez zw04 3)qnk, ixadt 479t uexs to an ideal battery of constant teqk x90deiu6wx3nd7 ) zcat /m,t7zca49e4tr krminal voltage. At the moment contact is made with the battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connectede zy95r g60mpb in series to an ideal battery of constant terminal voltage. When this system 9mr5p06b ygzereaches 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 shoulaw;ap(+gt)24 c. o zi ctm,bzld

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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 addition ofd .8dauk au*6u a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obtained by properly placing an ammete /k m9-cs:ss;5clo r:nd+jxayr in a circuit consisting of one resistor and one batr:j n +ycss9l5:mcods x/ak-; tery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammeter's shunt resistagiv0wqko* mh p// tf35nce

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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 icu(y. z + 2fn6hqdf0m*mhju (a voltmeter from a galvanometer, one normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmeter's series resistank12l5u qikn 3vpo-ly/ce

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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 voltmeter ac5b na0jh .l.odross a resistor. What happens to the total current flowing in the circuit as 5b.na0djo hl .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 xr;rr 9gw nw8y du d9xip 3v3:ssx(+(tvoltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading tuip8n xx ws3wd( r:+d9yx3(vrsr9; gby 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 serw:3hnfm vp +tf*i7nxdmm7 x 44ies with an ammeter, and a voltmeter is placed in parallel across the 7x*d+ 4 tfnx7wfhin3p:m4 vmm resistor only. 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,(gxgvz xfb0, 2eizc2i08q p 3sac/5uj 3.0, 5.0, 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, aos 1auz* n vtj-ndvid.jw,eo)oxd; d e5.o,:2 nd 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 nc8 mv4rbxri+,duy:+, 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;6m+ammi ysc camz*.0 a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combp5l-sra 6y k,jination 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 para0psqhf/s/b:v 6d : janllel 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 in*:lfn* jg lxkq7x uv+bjrxw2;5(h, dzto 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 parallelyf qgh0 :apl(b;c az*568bbqk 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 circui-g zo5mojbk-(lx: mio d7 igyx2)a4r-t: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated igx m-ydgo)-xl(i: -2ozo 4b5jrakm7 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 yojld4: kb8kg:v uz;f6 hu can connect in parallel in a 120-V circuit without tripping a 206kuk : jhd;4f8z:b vgl-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 an1gce , 4ms o.yz 3xrg8fs*4g$\Omega$ 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 .xfpjht;f9a8gedwv sm8 :cm36l-t)j$\Omega$ 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,a wh,s mk0:pf9 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 9l/2 h6rjkqpm2t .jc7g.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 ogy*2mimei+4 $\Omega$ 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 tqh lxpb4 sg,f7be w q5n a78j0j2/1hzbd1 ;bq9.0 $\Omega$ 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 res4843digw - hta1omfxm istance of the circuit 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 throughffn ab/zxl.n q)zol39l968nz $R_2$, 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 resistrq0wac82( h:uj *p jkeance 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. 19-4, determinmn,)4e12nj1k mv a s lc.1q/cghcwww+ e 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 thh,q k fnin7*:ft4ehdn(li(. ao 4/voge 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 c1mltb -r2 dczux 5oi* y*-e(.km: 0wvsr:vom murrent in the 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point A relative to point C in Fig. 19-5? c l3vvrm p.ow:*xa0c:


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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 poiie1cvh7iwq) y - +*qxznt B relative to point C in Fig. 19-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point D relative to point C in Fi8 yuuhe:07c* jsjr 1vsg. 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. 3xci,vjrd k f xcm;4,.sr.xh,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 poink3km*vm a4ye9 t 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 th pn wdl1 j.kmf(fl6cfeqo17 hl 1)p:i,e 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 8 ( nqa)x /e 7jmjng-(ok$\Omega$ 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 4 5oo3 y,iln,mg$\Omega$ 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 1wff1 b03+ ka5vg-atirgpd6; b 2 $\Omega$ 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,( 5n7fp4xbd ;yq sijr $\Omega$ 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 ne8 6ko)ptcs4d lower left cor6 n)t epoks84cners?

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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 equivalent capaci;dyc16yukzkl+ x vh31tance of this combinationkh3y6+c1vzyk1 d l; ux 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 across a 12.1dwvwwo6my ugoy+ jz h(-)-x -9z aj0w0-V baw90 6owvj yxwj -+u -yz(- dmzohag1w)ttery. 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 a 12,;mletb3klwk3 a1jf 0.0-V battery. What is the potential difference acrosswt fbe0 3,l ml31kkaj; 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 acrp+hu,q5 mcgjy oa1aa()t7yx3e4 o/fposs a 3.0-V battery. What is the voltage acromyfa3u )xa,y7o41cpe5+g/jt( p oqhass 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 acr mtbhp)2wavzpxr, 64xd6xj32 oss a 3.0-V battery. What is the voltage acvxb xa4r36ptjh d2xz6 mw)2, pross 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 capacitors are zfd:3tm5 wh6b qmo5v 7c,kc80 oihso.connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors h8 k3d0m vcso 6 q7mo.htibfz5o5c,w: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 connectoi)-x ,js c3vr.ie + pnsa4qh2ed in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent ca3i )qsre+n i-js2vc ,4p.oxha pacitance 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 connecy;cn6 syi6a9j3 5ka rpi,imu2ted in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capaumr5aanic3y6i69p;kji, 2y scitor. 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 are connected in parallel. The combina2-zyxek y ii,7o p)bz(/m-km20zlj trtion is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the char0t e b2z yzi7jm)--l(pk,r2zoxik/ymge 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 aro*-vs2* lec ysci2 eo9e 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 voltage across * cv2oc*s2l o-y9seiethe 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 chat u 2y:aq2nb;kl 0iow2rged 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 chacl4uur2ju sjhu5.: b+rged 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. The capacitoom bmp1v5qf*zeod7 29 r91mo em7zvb2 qp 5f*od is initially 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 aj z .7:sojyf:l/st4 swdp82v is then connected in series with a 3.: 8azdsso jwjs.p:f yv7/4lt2 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.ojfq9 q0u s0d 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 240(tqkwu*qyanvfz77 ; .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 intek+qz(e6 ehj/i0bzb0 :xmizl 6rnal 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 resistance of 40k9-jj5kg.bh knbu4o(.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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