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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 current fln6jruq)b 9yq p )a.m5fows to u 9.r )q6yb)jnqam5pf an external 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, ftijo:0 f .l (y0 *9y+6lic 5rt5gjm*s gubfhqwhen current flows to an external circuit, +bs6my c: tjuf*5fi0 (irh y*ltl5 og.gj09fqis 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 connected in series tx tzvt;sx5*1jo 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 seriedorngr73v gl,f(cmg*1 tcd0 1s,

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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 batterob tv5d- uy6t:y. If the current of 12 A flows from the battery, how much current flows through any one of the resistorsd-u:ybv5 6o tt?

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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 t-qu ,64t+q cnnb*-pkzj4 owfpo a 12-V battery. What is the voltage across any one of the resistoqcpko-464 qjfz ,n* un-b t+wprs?

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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 adde3 0 *dmsg6voipy47 xvtd in series to a constant voltage source, the power supplied by th vi tv3d s6g7*xpo0y4me 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 parallel to a battb8ck) gfzs t:z-.3e*vmla k3 yery,

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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 ho w0qn3hn5,q 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 connectesa .. g w ka)cf-flry)-p+pnl1d in parallel to a 12-V battery. What is the voltag1g )--rlk )pfaay+s.pnw.l fce 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 connectej; w.diru+ 9hzv-*fui d in parallel to a battery. If the current duzuih-*wfi v .j;9 +rof 12 A flows from the battery, how 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 Chr-yjit1x(rm 5 jistmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leadi-mrjt( jxy1 5ing 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 source, the power u4 wi 9a90asio9gg.ss9i.2ctddz4k x supplied by.49zgiw2o 4 d ka9sid9ts. a0iuc9 sxg 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 lr3y5h66qyhw resistors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected qy6lrhy65 h3w 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 junction ru6fm;sbw5qv o uwmn6 p8vi:/a7 iwy++hle.
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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 ruleu7d1c d(n onbrj37j.g.
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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 anhj: yy0.db i pna-6x*t 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 junctionh-tcjyi iqh;os e8452/c +gcd rule 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 h8ofg 6ayiiql o:-x*w45fn - wshown?


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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 ("+":1 :i nimmuyt7 z47xzf to "-" to "+" 4z1fmit:n7:m ixu 7 zyto "-"), and place 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 toget( o7 *jwssg9my*ing wf 29g3y;0cjlfqher in series ("+" to "-" to "-nmfsoji* ;gf99yc 2qg7js3ywl (0*wg " to "+"), and place them in a circuit, the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage bathfk5.5n,lx y jteries together in parallel, and place them in a circuit, the coxjhl 55 k,.ynfmbination 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 series to feuqo3-)n :g ha 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 capaci8p/zb05xuaf q tance of the combin5u xfp8/b0 qzaation 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 ar 2(ze.k ghr.eso)ald1e connected in series to a battery. If a total charge.1hk)e el2 ( gzsodr.a of Q flows from the battery, 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 parallcrz )81pr 8dhm.z+5pgd bfw,gel 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 ar(+df): oc9cd u8 gcqkte connected in parallel, the equivalent capacitance of the combination in okd+8c9 qf(:t)gcuc dcreases.

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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 parlr,,x1 ixm9 ayiyk;4vt 0bcf8 allel to a battery. If a total charge of Q flows from the battery, how much cvi bx,l1 a m4ikycy;, 0fxr89tharge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the quantity-n x ,5cp* nrbpddn6 ;,rol2mt 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 a92nx7u ia(kglsc j, ;k+io.mog1 ck0in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across ti(klxsog0j,1ku;m g 9 +a7oa2kn cc. ihe 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 ideal battery of condy 2z 2,26wbqacz.xykstant terminal voltage. At the moment contact is made with the battery, the voltq c6b2z 2ydzw xayk.2,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 are connected in u4sj bv8ea-sg7 kf+w z;a9ut0series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resist ;vk ag +zt4asub0w 9uf7ej-s8or 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 shoul81hnbc7*nr d/c 5y qpgd

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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 p4q3 q4ru+ka nl ()v3xq4uxnt 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 obtained by properly placing an ammeter in a 4lssio* 4m 9v2ga e+wkcircuit consisting of one resistglmew 2ks *ios 94av+4or and 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 ammeter's shunt resijyy(5 su1fl h2 a xe4.k7w,ryustance

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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 galcw0n p .(b,nwr: 4k7s- dhziwhvanometer, 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 resiste ;5rgd 1)fan4sdfhq 6ance 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 (vqdpb + yg g0w( 7kbd7i*u:pqtocy; 6a voltmeter across a resistor. What happens to the total current flowing in the circuit as a res(bvy:p7 dku tq0;6o+ gwg d(q*yc p7ibult 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 wij9r c*qnm)w(do 92 :w5 dxtijdred in series with an ammeter, and a voltmeter is placed in parallel across both the r: jd dd( xi*ctqwr2o5)9jmn9wesistor 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 i;0g an j+lspd1s wired in series with an ammeter, and a voltmeter is 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 voltmete+lgnp ad s0;1jr 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, an *epo;8zg ped3d 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, and 6. qr6apk-kfql c:j(b ;20 $\Omega$ 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, 1ur*5k2 p,w9tjwrdfq*a*usf*2j l2tz2, 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 a 3.0 s;m -w*j1se:uo9 wr -u4zqopk $\Omega$ 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 combination of aj4/j,jn,+my v yc 3xv0eyjc:f 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 4.0m;gnb y2 /.wjj $\Omega$, 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 combination ) osf1(0kq0uzaqu *hu 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 paooyn/k-st o16 rallel 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:vtlexlvo 6w p zb.69-f/vc03n 1200-W toaster, 650-W coffee pot, and 600-W microwave. Iclvv6 .fnet/wb-ox z0lv963p 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 number of 100-W light bulbs you can connect in paral8 mu,zotv(cw:fi ) u,wlel in a 120-V circuit without tripping a 20-A circuit breaker?8,:,c(ziwv ut m)owf u

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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 fzo8(ux5 z: *j)jyyqxi npt d4ka 2s4/$\Omega$ 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 lrop kzuddtb 6y1048qb902sn$\Omega$ 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, asddj qrof90e72 f. tpmlm:a95nd 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 9.0 ibo sk u*244 ueg:4rdp$\Omega$ 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:akb fe8+tq5i 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 anoocls u on/)0fy+)g*vcm, 4f ad 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 o*8fqqw (5hmuttkk+v(,7aqx ?


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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 throusgr z(wc08o s0 cm9fy)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 ,dymm92g mi/6m6rg yjin 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, d 7p5n9t3wh p6gp0x huoetermine 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 the curre2digj4 *l vllael5)d5 nt 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, d6iff (ktjq*.a 4ez; hfetermine 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 relativtb9a,a- b+ tsx0ocabmx g 1.1ke 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 rel bn:/ sgiurt;5zy4a 2mative 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 renl )8u3 2vkjm og)k gt*jtes,/lative 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 F v ;;4hdcbu6szig. 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 point B in Fig. 19-0b*pvam q;1ux d3bt m4 yrr44v5?


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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 the 9+iyn102 ccmdce;l +:dn ggro7 $\Omega$ 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 8/3u7vj:ax n4rg prm8 g $\Omega$ 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. gnygyi mn m/0;0az5lt 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 ioz/g:kvr4 m5d6a)pt3vu 9zi* u pt:yln 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 thefwk1k0q- /8o kiu eks2jp-fa3 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upper left and loc mf.2c1/m +qrh5r+;m lyah aawer left corners?2yc/+f51c am.m alarh;m +qh r

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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 capacitance odkq9+mv+jm phf-xf mdt n30xvw0 l,9.ei)qf .f this cov .n-.,ktfmq efx0lwq 3v+ +mfmid jxp990h)d mbination 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 connecte3)efdq: cksg 4pwly5fv1zd 5)d in series across a 12.0-V battery. How much 5)pfygsf3 qv4: 1wd k)lz ec5dcharge 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, andf3ihq-o5v n ( cqc6.x5up os b-d4,yupxyx)0k 50.0 mF capacitors are connected in series across a 12.0-V 53xux-pud ( .i-ho)ckxoy4q nbf60c svpq5y,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 vexy50ym-6hzv lt1 s4in series across a 3.0-V battery. What is the voltage across the 1.0-mF capacitor?txyz- e4h 05sml6yvv 1

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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 serie//ina 2uuunu* k9 um(,z ,mofts across a 3.0-V battery. What is the voltage across the 2.0,* n/t fn9k(muiauuuo, / u2zm-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 conn 3rtutqermpv)m qr++y8ke/s 55 .j,azected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are ful+ 8tpra5ym)q 5s3.retmr/jq v uzek,+ly 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 connected in parab ve-v2acd-xxlx- e) 0llel, and this pair is then connected ine xxxb0vle-v-c 2 d-a) 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 8.002xcrlr r1*d :a mF are connected in parallel. The combination is then connected in seri rx:1dcl2 *arres with a 12.0-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 parallel. mgu qaj43x jps/qouf9(bv0* ) The combination is then connectpqu *a 9 jxfmqgv( )uob34j0s/ed in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected i09t.q1 tu f/m bscsr.r0mxx:j jg6by/ n 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 f0:s60mqrtc y/gj b.mxu.jt s9 b1/xrthe 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 isntjp6 ig./ b:c-jka,e charged 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 charged to 12 V and then discharbp 5rnf 7y.pl-:-(qx:tipos cged 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.bt55pkf( u 2tkwe q,m2s+kut ce*1wy: hk.jh,50-mF capacitor. The capacitor is initiallyk* su+km pk wt.55(h,t,1j22 buw:eqetkfch y 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 thv+t 0vgzabl3)sf 5 m.ren connected in series with a 3.0)f m0.3za+ vvr5btl sg $M\Omega$ 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 resistance of 100 tva50 0d)z0xf1jhxekz*t:u w $\Omega$ 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 withjy00(gt yk6yr82cq nx 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 interna 6ntk q):nr n9jy1)j pk5tfsa:l 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 4k3gl /icl oml,y2 ;f -l;aae i+6/pzuh0.0 $\Omega$ 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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