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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 thgsp5 cy 3q zc)gvo()uw (qqn-;4a.k wfe terminals of a battery, when no current flows to an ext;ngy) q kqf5wc -3(z4avgu.q)pc(s woernal 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,kvv 90l ::nes/tmr8/sg8 xleb when current flows to an external cgt l8/m:v:xk0 /vl9berne s8sircuit, 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 connected9,(sot jqa- xt 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 series,fpj7; 28j:yc dxoe1sg

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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 battewm-c9r)m5vk t ry. If the current of 12 A flows from the battery, how much current flows through any o c5r)m tk-wmv9ne 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 dq2q 3l.pp7 eza 12-V battery. What is the voltage adqppz3 27 qle.cross 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 series to a con)cyd;ibod -x 4stant voltage source, the power sup-i) co4ybddx;plied 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 connected in paralle/hbbv.7oo/v 5 ;)wi6famb wsyl to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parallel, we can be certain thajg+ 0ktbs2iofo a*k (1gj8r b;t

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a 12-V battery. on5( 0ogk;or t1 c1dinu7mv o+60fhx v What is the voltage oo(tx;v n1 k15c+du 0 fvgmh0o6rnoio7f 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 pfpshsp7 kg,xix65w :g02i u d4arallel to a battery. If the current of 12 Agkiwxx,4pi5 spu7dfh2g0 s :6 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 Christmas tree lights are connected in paral0rvvi hb j/nko:(m6 6zlel. What happens if one lamp kjz 0 h/oni6(b6rv :vmburns out? (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 constantuo 3(j0*srcya;e m9n 3 o(jp:zfq je-l voltage source, the power supplied by the sourefe;9 3(pny za:r-*lqo m0cou 3jj(sjce

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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 of9lnc mlz 3rmc05y 14ev resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallel withcn0 m5 1zvmy4lcelr93 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 rule doo ;g6*)yr)f-gftvx0:ginb.
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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 rul0cgtasl ( hu06kxa5d9e.
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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 z,k8jt;lv8d- ;xtbgpe3 fr +tvs-p3aof

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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 anj( h2*d8zdbvn 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 thei,al lp(o 42se.cvw+ ws/ve 9nl-qpe. 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 st9 7hk0p9h x q7.hq*s7 yigxfalorage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination will provi7*pl979gyqq 7h h xxik.sha0fde

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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 seriedyst(1h a *m2ds nd4)3i9z vwys ("+" to "-" to "-" to "+"), and place them in a circtm13ydiaz9s n)hdy w4v2(sd *uit, 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 rkv8 1 c(.s)iy.bsfksstorage batteries together in parallel, and place them in a circuit, the cos1ky.b8 (fis .)rvk csmbination 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 ibij0 wj1rf* glxd p2jj*2m9n5 n 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 coovoy aeo2mvewkp8qq t:x5 /w5qo6* 48nnected in series, the equivalent capacitance of qopkm/*ovqw a 245oq: eoytx8vew 8 65the 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 capaci,;je7*v7ov gqyc( us:m(k +v3 otpy vgtors are connected in series to a battery. If a total charge of Q flows from the battery, how mucjo*vcv,7g kuv3:(yg 7m+s(oey;tqv p h 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 paralle64 ky2bzw+we t +7k:ndmgg q4bc/5lhcl 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 capky . zt 9/u:2af)rcgxmacitors are connected in parallel, the equivalent capacitance of the combination increases..uf r/2z ky):mg9tx ca

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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 ic4t sj n4u a(;q-lha8parallel to a battery. If a total charge of Q flq4 c(asljt8; hui4a -nows from the battery, how much charge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for t,55piz3v :kqq7auc1ks w cpa:he quantity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal battery of co+5uxnnru64k 17zvm mb nstant txub zm6u+5k7mrn 4nv1erminal voltage. At the moment contact is made 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 ar* 4iw, 7/ lre5ntynb qsn)1vlwe connected in series to an ideal battery of consta*eyntw i7,w ln/4rqb nvs15 l)nt terminal 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 capaci-t1r5a mmh)uql sp1 5xtor are connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage acros 5ulqx -mhsp1)m1a5 trs 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 shouldh5fnj .5qgux:fn / :co

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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 ammete2to jgv9mlhiv67; z7l g1t9 /llhidj5r 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 obtained by properly placik1 tpj05r eun- esqh)-3)e lring an ammeter in a circuit consisting of one resistor e-h kjsl-e e rr))i50pu3nqt 1and 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 resis53zpl35xa mt jtance of 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 galvanometer, on ;sw6oe1j(s(i5ehos /z*xnww- os a)se 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 resistnv9 nypw:vbl e6v0 )8kut)l9 uj,m9 fcance 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 voltmeter across a reh .k1f1psi wqfuj/*x1sistor. What happens to the total current sf/ pjhk1.*qf1 xu1iw flowing in the circuit as a result of this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, andi0 +n ig(oa3itk g6xk4 a voltmeter 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 resistanitgxk63 +4i ia(kg0once 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 wit 8x mmx*.ljy8hh 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 voltmeter reading by the amm.mh mylxj* 88xeter 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, 22 knp y )c.n47lc;tg8si:oeq je5. g(wztqpt3.0, 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, ;n vy h;uw3+vzand 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, and 6.txkopn ( a 4jlp.62o9y0 $\Omega$ 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 szj-, 4mu,b qsweries 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 combination 4oeu(tv j.c yet-78 e5gd.:a toqe,jn 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 combigv1 nz61c afg1nation 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 zdfs+ qz(z5y, e0f 6om9he9o bparallel 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 parallel combination of a;lg)h5/ qbp pi 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V circuit: 1200-W to; e 3evp.-ub buvw7om(g1n1kj aster, 650-W coffee pot, and 600-W microwave. If all were operag1ven.- m1; jpuwobvu3e(bk 7ted 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 l) r bx3:hmw:pvight bulbs you can connect in parallel in a:xmpw b:hr)v3 120-V circuit 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 chjg* lwuj,4 /)f4nq5by 8)t( gpdpop $\Omega$ 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 aht*g xki75. 9yp aohro**wnr +nd 30 $\Omega$ 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.+5vmsxe:7j . 1ohe siik3e9ba0, 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 9.0 5)x2u qjioc+hg19aon $\Omega$ 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)4nn;v+fu 8l ;obfk1wpsy( m e 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 nu2tp7.b; .mpek mi9ya4eix2 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 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 resistk* iiyn0:-wyy ance 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 through m,qnl3 ;z9d 2 c;yp3:1be ov7fudgjfd$R_2$, 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 Fig. blrw5,6/we xbm4hmjhf 43k e-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 cwormb7t5y/w ), k sbuba4g+ 3hurrent 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, dtpjv cw+c(-d0etermine 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 current in t y-y6+bpotr3x/ n.u sy8/drgohe 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 iq i(n3gw2nm:i io +eb7;yhv)hn 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 poiny-;a2lhh7dv2p7hvt-x4r ro z t 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;ju fjou,8vv 4 relative to point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from the battery i/i wolcn t-k. e+4ren0v 0.dhin 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 point A to point B in Fig. 1ecjh 9n q-a19 pt6d2pz9-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current /xg+2 ovi* vzasujl a7(o z7a+4+cl ivin the 7 $\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the*qi*w/vw 7ckfp9 8s i 02ppehf.z8rka 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 inz) ulzw52os 32nt gt6s 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 i(iw(jsmw d, (eq p xnb95uj;d1n 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( lva:a) i1i):lizkqw 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 ij c:.n/h2. jczb qi nl-j+6oyr dabg,0n the solid wire connecting the upper left and lower left corner2-h q/czjbr id , 6n.0.c:jj oya+lbgns?

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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 equ1o2yooxea .hcks7 /l *dq60dgivalent capacitance of this coml6 cq1*o2s7oed/ g yx0oakh. dbination 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 acr(5 e5hhr dphlfvb (76toss a 12.0-V battery. How mv55hfth 6l(rd(hpb e 7uch 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 cappn*18+ip2j/ 2vmxgrjj5 e x yuacitors are connected in series across a 12.0-V battery. What is the potential difference across the 10.0ge2r m8j/ +ixp 5ux vnjpjy*21-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 acmixbz ando4c *1gl+ *7ross a 3.0-V battery. What is the voltage across the 1.0-mF capacitor*z4+ nm adl7igocx1*b?

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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 a9ky n h ,z;71wb6v1xws0h vv-a7tnraxre connected in series across a 3.0-V battery. 1y9xax1hvt 70v v- akw76r, nbzsnw h;What is the voltage 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 njdo2 41u+;xigwz a) 29aduo lare connected in parallel across a 24-V battery. How much energy is stored in this combination when z9 4d;u2ngl 2aa oxwij+1)u odthe 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 co +bv9wh igs 7xir f,y7.:hwi2mnnected in parallel, and this pair is then connected in series with a 30 hi:,7ig 2 i+s7.vmrh9wyxfbw-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 mFle9:s o/.i tra and 8.00 mF are connected in parallel. The combination is then connected in series with a 12r ./tailoe9: s.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 i1 25 v6;z p(xzvmzkgmxn parallel. The combination is m zx6gmv;(1zpv5zx k 2then connected 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 in parallel. Thebp3z 0uel5m06e3svr7okk p d,. l7 hhm combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across th lm3h0zpe okbp 3h0,65ked.lrsu 7 v7me 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 through ar c46*v zatv,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 +jx i/2dn mr6uib zveuv,oaq95u /2tpn* 5+zgthrough 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 capbz9 - hixosi4..d2rpaacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltage betwo2z-9b.idis 4 rax. hpeen 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 b;mu5iz4et ku 8i 0ex0is then connected in series with a 3i4ukb8e z;m0u 0ite5x.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 internalyn m/ yxeczfw,1 rcq-wfz(:(: 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 cs htcd ea6anfz6o/);1oil 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 resistance of*r pltc8ppx- f/(hr8y 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 mo 1h.9 saz 43befj-sbof 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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