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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 curre0 pv;d9my vpqvt //), ik.jdiqnt flow/,kqtv;ym )d/qippv i09j .dvs to 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, when current flow :l1it 9-kfw6b,k rzsrs to an external,:-i k tr9fbzr sk6l1w circuit, 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 connectedm**ou/hmi8 fg /pbhngx7 t 2.y 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 c///l;z6 el skxbxz cq0onnected 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 batterqo 4a.g ggnts 9/tp9e*y. If the current of 12 A flows from the batteg.a4ot9 *g qg9eps /tnry, 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 conn df7 xpb.mg/pftb23+uected in series to a 12-V battery. What is the voltage across any one of the resiu73.pbg t2/pf+dbf xmstors?

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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 source, the p+yb g/6pz/r izower supplied by the sourz/z6/g+yb ip rce

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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 connecppvnoe m26 6a5gog ;w4t(6jqzy/ jgg: ted 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 ib mccsbo .rl4;n82ke-n 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 connec.rg;nxfrukq 84( dg/a :*h pd kwnrt07ted in parallel to a 12-V battery. What is the axt nukf. ; krp:rdhw/r7g4(0n d*8qgvoltage 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 resistorciwcc (z0 2yp.s are connected in parallel to a battery. If the current of 12 A flows from the battery, how much current flows ty (c cic.wz2p0hrough 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 parac-w wsx4lr3q*llel. What happens if one lamp burns out? (As*rcs 3 w-xw4qlsume 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 1q /bw) bpsfw/parallel to a constant voltage source, the power supplied by the sbq)/sww/f p 1bource

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each of resistance R. The maximum powedk*jh.3 759mm0ovu gn(s ra lxr each can dissipate is P. Two of the resistors are connected in series, and a third is conneu g 97o (dxjlh35nk msmra*.0vcted 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 q ovgqa.k;6f, 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 rule.r;a3 cnkgf9jzn(xl+-k i x2t 8
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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 exayovx xs3ld9ab r ;6lp, z0m)5bmple 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,i nhx1t :.bcg 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 circuie+i .luiqofcz:)0 )rit 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 ("j + (su ul(1xkkpi*oyb5in :z8+" to "-" to "+" to "-"), and place ((uy51xbkl+u:8 nkjis pi zo*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 together in series ("0)orj/ztak *0z57 n1w 8buzj a9iived+" to "-" to "-" to "+"), and place them in a cezi ot/)zu 9bn0kw1a75vjz *0i8radj ircuit, 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 sto2* yy:uvv2m8 izvof7cyj jdi //n-he, m:(rgcrage batteries together in parallel, and place them in a circuit, the combination will p*m2ugyif-/jzcey noyj2md ir hcv8(/7v:v,: rovide

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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 a brqq h/h 8ht1.kattery,

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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 areb(ncjl:kb52o- hgslk 76+jha connected in series, the equivalent capacitance of the combination incr:k 2k-7 h6sgjo ab5l nh(cljb+eases.

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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 batteizsd6;b 5) mj;e(1 mg1sn canary. If a total charge of Q flows from the battery, how much charge does each c6(5endng1cm;saj; )zab ism1apacitor 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 connpim id5h 5g;m slm2-/xected 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 conn4ne4 :w2nd-vzfppq : kected in parallel, the equivalent capacitance of the combination increases.q4w d-2f4 p pez:nkn:v

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors ac/ yj)tokl5ug(- -igyre connected in parallel to a battery. If a total charge of Q flows frg-g)cu(kj lyt/5iy -oom 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 the qua/oukhyd8ve3 l ia)/i6x,5ydg ntity 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 batter2. i+po;g ) yshexorks,n zsowmcrk :5s0l4( /y of constant terminal voltage. At thezow:sge/cmni p +ho5r 4k.,;sxksylr2 o()0s 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 are cozb 1:kp:b,*q)v hbcblnnected in series to an ideal battery of constant terminal voltage. At the moment contact is madzp k*:cbh1bbl v:q ,)be 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 to an idej lqle *.9v/vs2 lac,ial battery of constant terminal voltage. When this system*iae/2lclsjv9 lq v, . 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 should)p.r 2ce0t.tjxqq3y5w: ecbj : ppb -u

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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*p7c5y bt,*x xtg ar2n to an ammeter by the addition of a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obtained by prop9vh 2apm l-). x,bbe okhpi-(jd40dnqerly placing an ammeter in a circuit consistingla2m(h-,0ho)px-n.9k ipd b je4vq bd of one resistor 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 amm0:t qsht ldd;bfwc d*:tmb60,eter'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 galvan8+yfaa6:gm k cwg bb20ometer, 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 resistanrtmra t6 (sm/ nh;t,9qce 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 vo-srsja3k6*- xv zc 3pvltmeter across a resistor. What happens to the total current flowing in the circuit as a result of thiajsrz-v v 6x3p *-ksc3s 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 8c pu8;4t/mb-)tyem5mq r.h.wtrod g in series with an ammeter, and a voltmeter is placed in parallel across both the resist/.8 c-htw8q ybpt;u5mdmrotr 4em.)gor 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 ammetei:n eip/fl0g) x8kxu9r, 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 x :e8)ip lu9kgx0/nf ithe 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, jqhd eofa, h;41z5xfw /)p 2ix3.0, 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,d5owy s ;yy1fcq- g94hjdjs07 and 6.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and tnkwa2t*9 a3 h6.0 $\Omega$ 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 series6f i- iagg;ne,0:zdp /ct lm4z 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 +mm/+iurtam--6om vz combination 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 combin) el kcchf.d34ation 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 intol3exj -b:)lag 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 pwbb(q/:9gdr;j3u;c;ufaf st arallel 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: 1200-W *kwf v9mg w/--b8x,mr gvdj-w toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would gm-d mw*/-,g -8xvfbwj w9vrkthey 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 numbef5h h82w** xdvqa5lci3fa k ;or of 100-W light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A x8 h5cf25 * k3;aqd *ifowvahlcircuit 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 2.04inq/ 1p)jen-kx z k ,k6ihndhc.+8miztc 76f $\Omega$ 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 308gqv/kakt7+w $\Omega$ 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, any4u7i(g 9ucooj 0zn w,d 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 qlg.zx 1d+b:0yiee1fand 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 m4;ck4v ufu7mch14u8t8k oem 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 ld gcf3 hff+rgl5g 4hq./;b6pand 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 ,4uc9jwueq8 u 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 yr*2wj:us cglz+4x b, y8mlw)$R_2$, 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. 1a)rxwy kru x*70h.vy2ytk8:c 9-3?


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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, defr(wx6of+s+getb i+3 a gl0ed ,8ze*ytermine 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 current in- ruwvm)+,lnw 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 thgw*w4 k/kxe(i e 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 p8rc )60/td i6r dnqqosoint A relative 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 relative to poin0bew )rlucj4vy; + vsur+1gr7t 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 l x8vg. 1tyq8fauwr n19a3-l oin 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 batterb569yqx tlo7fdwx. w6 y 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 point A to point B in Fig. i+w5pi -c5i27tyzo yy19-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in0jh u2 c )s2 hbwinkgz)ya37q- 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 e f6bx 2ink5c2hp*5 me8 $\Omega$ 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 o+w 7rs bcd5)u p(1ajukxi6ufgpn:85$\Omega$ 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 12 h ge m2ywuf5 9,(4kchq$\Omega$ 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 2*z:az/iybyt 3 yuse(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 to(* .z-tk yda, rilh/the solid wire connecting the upper left and lower left corner-aizl( /. t*kyhtdo ,rs?

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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 capa.pqpsl0 d8k.eupv7rs-0s ,r zcitance of this combinat.q- ek rvps.s80 p 0,plsuzd7rion 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 1yznjm981*yrh hh/ niare connected in series across a 12.0-V battery. How much charge is stored in t ym*h hj19y1ir/8 hnnzhe 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 u :sk8q09i jilare connected in series across a 12.0-V battery. What is the potential diffe jq0li :is8ku9rence 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 :mv+rccv0jg (g9id;d capacitor are connected in series across a 3.0-V battery. What is the i d:r vgccmjvd0;+( g9voltage across the 1.0-mF capacitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series across a 3.0-V battery5k/rj iyik7/pjj5 io7. What is the voltage acroi/k5rj/j iyk77oipj5ss 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 connehdg6lbm2 * j+vr0ao 6jcted in parallel across a 24-V battery. How much energy is stored in this combination whenjv brdl+ma0266 jhg* o 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 connected in parallel, and this pair itfnpe*n54y d6s then connected in series with a 30-mF capacitor6*pdnntyfe5 4. What is the equivalent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected inbmqiu nzly: d4;7q( n- 3eqo0l parallel. The combination is then c-nqbli30y4 :(u e7nqq m z;dolonnected in series 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 ind5 h8iji-lm .cdib /y +zw9t d6cau/82pni9af parallel. The combination is then connected in series with a 12.0-V batajhmci +wldb9iyi8a5p6di 2z/ dcf- .ntu /89tery 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. Th:wwchijk(b w a rnj a1+48f;1ve combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltaa1njfw(rvj+ i h w8abwc4 k1;:ge across the 6.00-mF capacitor?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charg: 1z ezokfh6lh*vu;2ded 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 chare-7t t i56k-jkp9x sbmged 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-t8qre) -7xrz5kkst8h mF capacitor. The capacitor is initially uncharged. The RC combination is chargq8t re-kk8 rsx7zh5) ted 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 f ctp--c-le3ee u1wy i0x((wito 6.0-V. It is then connected in series with a 3.0w (i1-0fiwcx-(peuc3e - ye lt $M\Omega$ 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 a1mqg3ogelu .,ksg0sf jr-6-on internal 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 likyih i. 6(w(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 resis(hlcm 71 ns ek0g9,vwj2ntrg)tance 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 ozcms p fx ,c9s.5ald52f 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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