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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 terminalsl*nwq+p sdzv-g4k; lg8d p .v+ of a battery, when no current flows to an exter+glk-wpg8+zl*dvpsndq ;. 4 vnal circuit, 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 battery, when current fl dsxw /5(za9rpi4.vo;0lrrxdows to an external csx4odr ; r5ixwv(r9 l./ dapz0ircuit, 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 are co)2ku-jzuj:u q nnected 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 c6hcaf s+rx,vi3;6j dnonnected 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 battery. If the curren+ 0h2.gw*r(xt/+ wnvq ccvhbmolq, w9t of 12 A flows from the battery, how much current flows through a qbqr9 l hg0w(v.+w /oth*2cnmvx +,wcny 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. Whs05;/b;k mi.t8gy+ uyv,g kwaxwy6p b at is the voltage acryx,5vi6swy;;g+ 0bk/ykp u 8 twmga. boss any one of the resistors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in sy8oov+epz;+p4aw 2a6hbr)qh eries to a constant voltage source, the power supplied4ea+z8prwop by+h) q6;vo a2h 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 resiiom8hc/+5- gjex4 kcistors are connected 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 in parallel, w5qf: bg44xqi te 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 resivdj+k 6ihkwvfn4+,r -v *jf3tstors are connected in parallel to a 12-V battery. What is the voltage of 3,vrvhd+kifftj*-kwn4+6j v 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 bf.of4 92he lneattery. If the current of 12 A flows from the battery, how much current flows through any one of tef 4fl2e on9.hhe 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 t3ay;fpn d3gk* ree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resisna3p*3 fdky; gtance 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 voltage sqene4x5fi p .vs6749ohp( o svource, the power supplied by thi6fqe(h7 o4.v vxsenppso9 4 5e 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. z 5sypm5d .x4xThe 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 this network can.s45 5xpzxyd m 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 junction2s 8jc76u4 o+jrncom4/prgsd uk,xc5 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 loop rueu 4qrk*)bf+ma u mi8o)p:89zwnof)vle.
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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 am:-njro 6x e wa;.co7sn 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 is an example5dzf-zyzis wc)yv s f;2+a:: s 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 i)0knvez i8tn4 s 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 together in series ("+" to "-" tcnvovh2yj/j s 14 az6 1q0+td(ufg au/o "+" to "-"), and plaoqc+t011 fjvju4vu/gz2ay h(/6snda ce them 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 batteries tog *esi(z,hh 7wsether in series ("+" to "-" to "-" to "+"), and place them in a circuit, the comb *ise zhhs7(w,ination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in parallel, and place t txqawmqm53 ;5y8hyau43+sgaruv 3q2hem in a circuit, the combination will prov8 r5 xva yq3m4q3aauuyt2m5+w3q; hgs ide

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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 capacitor/yjpcq-ivoh5 jxa1,4l x2g8 is 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 equivaer,),x::u) oh9hf op . pcc,jcw)qdytlent capacitance of the combination increasesq:w,eco:)rhd.f,c j )p , p)utoyc9hx.

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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 battery. If a tot,cr9ju5q)h080ti u bljgfqwl +v:sz0al charge of Q flows from the battery, how much charge does each capacitojj5hu,0 gi9c:s)+llzr qut80w qbfv 0r 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 *wx3 w3 5(muwdanz9my parallel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel, the s1*y(ytz,pfg1.w frb) seaz -q5c ar6 k8z9kfequivalent capacitance of the combinak, p cbsk9e5.zffzz1f)1qr8g- wst a*ra(yy 6 tion increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capaci0r*ecz(8gwis0e6zzf vbo2*q tors are connected in parallel to a battery. If a total charge of Q flows from ti8vfbezzg0*q( 0 6o2e *wrz cshe 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 the quantit+v3:s f7ax0vgpuo 2 td:o og)by 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 connected2vg+6l, b: nj/yunsqws1(t.mu nrge- in series to an ideal battery of constant terminal voltage. At the moment contact is m,/-.nu (:w sney1ltvmg2ruj b6qng +sade 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 ,so* 1 d u7l:isck3mkoideal battery of constant sd7, :i skmo1k*cu3olterminal 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 connected in series to7zzg6ayzrhhm2r ;b-/ 0ls- yt an ideal battery of constant terminal voltagz/zrhy- a2blzh;6 ysg m0t-r 7e. 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 shoul+.5j8s nib mx5di* k1j8odylcd

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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 ofymjd;j, a z:e0ot:2ks 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 ammeter in a ci dg4g8/lda8dge rwt7)s, 8trfrcuit consisting of one resistor and one battery. As 4) /leg8addws8r7 gr, 8dt fgta 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 opls8/ gj 1a;wsf an ammeter'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 a galvanomet)bin ow)-rpl4-- rpfter, 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 voltmet0b4xfrh(u)q o er'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 voltmeter across a resistors+ov6q,x e3o /eeyc6p,rjs4 k. What happens to the total current flowing in the circuit as a result of this act pscq6syvj exo+/ 36e,4eok,rion?

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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 np8bi8mn* 7v(iffbk )lkyk x2w6r7 w. in series with an ammeter, and a voltmeter is placed in paralliv* mb628ip nf)r lw.(bnkxw7yk8 7fkel 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 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 a voltmeter sx d :s4bhq,2h 8cqfz hb/5qr/9orl(sis placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by tzqs qh//8 h2bs : x9 4sbrolrf5(cq,hdhe 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,fsjx25d;co e1 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, 1 b*5b)9a1jbf tlfm(rbo8e7g y2, 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, 7rnb ki crpzz89;b 5j)6 *lpcp12, 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 serie 40 uksp/r(3gqfhd8qes 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 series combi)stw ayxb)-*f0k:mrt nation 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 combination of q(6lbusfhodsdxq2; zx 5;;r84.0 $\Omega$, 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 combinatio4tyu.2swyrn f1 (s, asn 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 combin 8rnv 5r9o)gyeq cfj18ation 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 wl/q, n9e cklcj675 ndto a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. Inkdw l,7c6n5c jq/le9 f 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 numbermh x-c,nts3ki s08qu - of 100-W light bulbs you can connect in parallel in a 120-V circuit hc 08stq3 x s-,i-kmnuwithout 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 fijr:c;xbmr-y8kt+ * $\Omega$ 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 t pzz;k4 v6cc7bg(+b e$\Omega$ 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 10.0rjdyt6xazq3 v( ty+(2 $\Omega$ 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 anbt/ odiq n1dfd3(c8s.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 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 anzh30t i+0pz:lo,k d m-3qgvoqd 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 a.vu z t/0qd3l48t9em4 ci0db*r cmgycnd 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 inxua 97 m kg,/1-en2,;og1 mzzmsp xkwp 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 throuj15ca4 9wo 4tgx g94bobjbng)gh $R_2$, 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 1k6 )gwwby(go: 8xzg4-lettfFig. 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. 19-4,4yx u 7dr0g(k3mang :je4c-sz 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, derul c,a:/otx6w*bcl)termine 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, determi0tkhmp c-gz 7(ne the current 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 i(wf79knc od 9ig- 8d05az pklr-z5cdcn 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/n j*t8bs5+u6 5 1 wjphkzqvlu 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 af0sg6p(ljik) a),qsky 85fpD 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 bat-u9cgno*iy9eal 94x xtery 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 yv46 0 jpv0vhf;ugpmtf53 k 5wpoint 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 currenl*t q8lk) 04oxmhyx4y t 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 the7,oo9jl xxtypo 03hz. 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 curren :q9j)3spigclpz9y 8 ct in the 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 6g+qxgt0gh 2 igb1vq(the 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 1v e/c6 pqp1gt(8 $\Omega$ 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 a l ffu.c2-6rvvnd lower left cov6 fcu.lvr2-frners?

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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 equivalsoedw2oz 0 qhn0+ac9d 38* 76uppjnboent capacitance of this combination is +0oezdqdhbcun* s6oajw9p8n3 op 07 2

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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 5*y6odxqn44p )o 1 wsr9slnc7 .d4wpcv 0.0 mF capacitors are connected in series across a 12.0-V battery. How much charge 6s*4 ornlp w4).ndyx4vcqcp1dows9 7 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 gbg x-kny;xllf6.8g) mF capacitors are connected in series across a 12.0-V battery. .bxl-f ygl)kg6 n;x8g 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.ew33v ub1jbs1 ng l6e capacitor are connected in series across a 3.0-V battery. What is the voltage a1sb en6bwv.e3 g3l1 ujcross 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 com zab5eg602ubth 2z(lnnected in series across a 3.0-V battery. What is the voltahbtzlz 02b ( eg6a2mu5ge 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 capacitors aremhg1 p5sy 2k aipy5)6o connected in parallel across a 24-V battery. How much2 pih5smkay 5ygp6o1) 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 c;gc;d 1ebhiuma,k stlwl:.w/:.d t6k9trus/onnected in parallel, and this pair is then connected in series with a 30-mF cap twk /d,shk/t.cgab;6 ultur:9 mls1iwe.d; :acitor. 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 andywxy 7b0(nkr oq-5g kq+ d-:xz 8.00 mF are connected in parallel. The combination is then connected in series with a 1xyb 70-:dkyq-kz 5rxw(go nq+2.0-V battery and a 14.0-mF capacitor. What is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallev;v :cg beb0 o 6yy+s(.bh)lzbl. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-0v+ vzs yc.bl6egbob; :b(hy)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 c,v9oeh hlv6r,onnected 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 th lv,9h6hv ,eore 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 thr59 kz(qs u:4:ka 4.xxpzqa)bdnu) c s d5*aysaough 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 (xmryb. uvb-69lew; v 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.s5kaz + h.gkll*l6lfj(a c tqf+.h5c2 The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltage between+ .t5 f5kl6a c2clhs(+zfjaqlhg l*.k 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 i:r*bmc ,n ej 5k2oon)connected in series with a 3.0 jenbn)2oo* ,c:rm k5i$M\Omega$ 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 nb:nuoe8 )y4okn 2z(n 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 .n7v i as)1otklzu;b) with a resistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal res 6o68h,oo6xhk.gecs aistance 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 5rltq/r 8 wn2h7t.mz ra 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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