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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 b9n puumaz )/)xetween the terminals of a battery, when no current flows to an externau ap9)mnzu/x )l 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 a1l0 r u* 3ii/6sozhlmr battery, when current flows to an externa l/*i3so10zhu6irlrm l 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 reswz gnd m0j: v0i.5 cnmbxlsv9ov(,96aistors are connected 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,ba 69nwuvzcx r:th8mz- v1e81

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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 cu0p qm /1,hvxoqrrent of 12 A flows from t,o1 m/qvxh qp0he battery, how much current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a 1i.)if td jn8fhm.+ow41pv +bcwi4 h4a2-V battery. What is the voltage across any one of the resistors w h+fpita8+wiim.)v441 nohfcj.b4d ?

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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 vold0tfa *vz-so+pj3w;z ah /4drtage source, the power supplied by t +t0dhpward-o; za*jz s34v/fhe 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 connectem ,95.od:+wu i gycjusd 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, we canlf+,6 +m tb4prq8bqcr be certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a 12-V g5pvvn.o,g5-fmt un w q86c wrw67r 0nbattery. What is tnuq8vmc65 .vw7frn rg6 w0n5 -,owtpghe voltage 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 connectnixpc7ymnh,y t;5v ; 0ed in parallel to a battery. If the current of 12 A flows from the battery, hownhn i v,yc;7my;xt05 p 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 cont4ufzja/*l p-(f2b xiw/jim,nected in parallel. What happens if one lamp burns out? (Assume negligible res uzm(liip ,f 2/fb*a 4/-twjxjistance 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 ar- mwj2egs3bm: sa q*licut19 g2r4zr1e added in parallel to a constant voltage source, the power supplic jlr-wbazmi :2m* 9qggs1tr e3u142sed by the source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each of resistance R. Tybm,r787avd v he 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 dissi8v rmy 77dv,abpate?

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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 wpxwhw+a.a0,7w87wu6khhz j.
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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 rs0gc x tkbb5;f,g5l(c ckc- t5ule.
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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 of/bpk0nmdfl +h2 a4u 1x

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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 exdmxae2 3 lx:7yample 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 circuitg (6e2mgj3urp 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 ivdoq nv.+vj3(n. f 0m2dth9ch dentical storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, thh.0j9+v ot ( fvv nmddqhc.3n2e 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 togethrukkm4k86r8 ser in series ("+" to "-" to "-" to "+"), a rkkk6sm84 ru8nd 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 batteries together in parallel, and plac yheq-rw.* +mxe them in a ciyrw x.e -mh+*qrcuit, the combination 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 a bl r;w-+nj3afqattery,

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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 equiv.kagfuz0tl98 n):3fj qphlt ;alent capacitance of the combination increajzk38f ;t h l qf0:n)up9lt.agses.

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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 connecmsdvs-n qd+2*z 7b*46py yc kqted in series to a battery. If a total charge of bsnsqvm- 2qdzy76k+* c4ydp* 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 parhv gm,je j0 lsna*((j9allel 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 i7zz7 8bjbcce5 iw6a c,n parallel, the equivalent capacitance of the cb5zcazjeb87c, w7 i 6combination increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in parallel to a battery. Itkd vvwny gzsd5m*rr. r1:8/ .uhor34 f a total c.zgvrdrk t yh.u:4 v*r3rs1mwn/d 58oharge of Q flows 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 the quantity4 mr(:tuk un)m7 *,ya,lsykfu 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 ap8aismb)s,ut to6m iy.9xl7 +n ideal battery of constant terminal voltage. At the moment contact is made with the battery, the vobilxamo+9tt, m s syp86)iu7.ltage 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 ideal battery of g ef;d*zrq2fd7 i3:a sconstant terminal voltage. At the moment contact is made with the battery, the voltage across the resis23;r:eifdq7g s*z dfator 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 ideal bati- hb vzt:..)ogcnm z.tery of constant terminal voltage. When this system reaches its steady-state, m-g io.tv.b .c nz:zh)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 sho1t bfem rae)oa87q 6w9sk 8k+ruld

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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 8dk9kqkh xz:s +l mjl(t5yt./ 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 properly plw 4umwms(i3.*zuhjfzn , v0l5acing an ammeter in a circuit consisting of one resistor and one battery. As a rei(,4f5j0huu nmz vl3z .wmsw*sult,

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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 re*p(gskh ytke6 te19wk) u)ns93co +kusistance

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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, one noeblt3)ljv); erqxoeneer:j: ;r a1+ 3rmally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmeter'jl+c *p2qk, lps 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 vf,jurt p/xdri 4 )t,q3oltmeter across a resistor. What happens to the total curt)jitu43xr/, d,pfr qrent 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, avam9z d .qdgv1n5ob +-nd 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 resistance by dividing the voltmeter reading by the ammedmb .-1vv9+q naog5 dzter 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 zb y)6dhph5o9voltmeter is placed in parallel across the resistor only. This network is then connpo9y) dhbh5z6ected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12,,h,alnjjh92q 3.0, 5.0, and 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and 6.0i5r p: dm:)bl6wltef+f f5e6n $\Omega$ 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 n) h5xc:zw.u;r 0ctzf, 12, 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 combinbt,e6a swr*4y ation 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 of a 5qmn;lv4 er*f+bml1tzd- q ,l3.0 $\Omega$ 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 parallz;c20vmxg0 c7ealkefpjk 1- 9 el combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows in fev;xvx1 k4l (tf7qmvk9xd hmr/-o/,to 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 parallel combination of a 4.mmn+s- ;gdxeg-05l dw 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: 120adzgr 4fuo) s./m f/ w;u/ju;a0-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at t;a4us.u/ g) ouw dmf/;r fja/zhe 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 b8ui- pnstb,q/ ulbs you can connect in parallel in a 1sb-t,p8 /un qi20-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 2.0q i0roi jjl05; $\Omega$ 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 anxxwqh1w (. 4ajd 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 4.0, 6.0, and 10.kiwhux*i l7w ebd r (8g61/9hu0 $\Omega$ 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 9ckp v0qy7v2k9n(mn n(r/sn.y.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 aamq r:obd p-qpd9-:: hy sk5)dnd 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 and 0 iglxzzw5 z*7 jafkt79*kyo19.0 $\Omega$ 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 resng+pf-yvl*g p ,m)g ,nistance 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 through9uo) y gi/n;w5c)jzqk $R_2$, 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. 19 25/5ty r60,o4ncdq fpcc:um zuewa/x-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,x)*crxlgzp)( b ukn; w,7) kbb 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, determine the current in jjs0g0cg12bx r otv 10the 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, determiwyn; urkb5 a6tja73 .jne 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 in Fig. 19-5? 9acuvycj*73 yt/m hn2


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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 po -x ,,k: 3etmik4xjlplxrr1r8 int B relative to point C in Fig. 19-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point Dzpo7w.st)r ms 4h b:t.z+q3sw.jj8cq 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 f hj-)t k vtpsrq3u 5z16/a(focrom the battery 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 poin)f-yxtmr,7 mom w6m.r4vx u x*t B in Fig. 19-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in th q3urr/od9 fe x5a,ri/e 7 $\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in t1/ xn 6guqtrh)yldm:iu1,k q f*vr3ml 5rs48c he 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,wo;pv ) 4wj xgzv0h h2d(uy4xt 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 the 1+9 dwqn b77mqraee( 0x2 $\Omega$ 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 18r bx1ivljtx :7yap12lw 3z3f9 $\Omega$ 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 uppe1,jx vzjbs1cvca2p 3c c7inx1jhlz)9 5j( qi4r left and lower left cornvcn 2zzl4,cj1 )xs7jjcjb(av i531h1cp9i qxers?

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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. 7 dp nv,k)y.pc7i; itmThe equivalent capacitance of this p.v cnyd77mt k);i, picombination 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 60 hxtqdsa.0bseries across a 12.0-V battery. How q b 0a6xhs.td0much charge is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series x,bqj19mp vk.f o6qd 6across a 12.0-V battery. What is thed qfjvm6 1qpkb9 6,o.x 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 in ,nig jk,t 7j6x0ihz y5jaip44 series across a 3.0-V battery. What is the vt 4igp746 ai5jy0zh ,xnj j,ikoltage 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-m2o0dgr; w(-(b nrlolyF capacitor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF capac bnd;y og(0 l(2-rorwlitor?

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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 connected in parallel d (qcjbv:6rx3i. nq(kacross a 24-V battery. How much energy is stored in this combination when the capacitors are fully (ci36rk .xqbdn:(jq v 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 ra-jvicdb *o0m /n1:lca/u/p in parallel, and this pair is then connected in series with a 30-mF capacitor. What is i0dl1c://j/vcpn* bm a u-ora 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 in parallel. The combinat*o4 ffnnzmg: (ion is then connected in series wito fmfzgn*(:4nh 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 8lc q6 .0rcu9-bikgj )h.00 mF are connected in parallel. The combinatiolu)k rhgbcjq0 -.c 9i6n 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-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. The zwotx gxod9.;x*v 2p r +k)3ljzjs.*j combination93k;*oow ).pvdlszjj g z+jxt x.*2xr is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage 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 charged thr5r +e *xjo8 ohu-z3qpcnf,x,1tdeu1wough 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 dio8+bx7m 0il+jx8botv qz,/ hischarged 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 op39z,sfys v/jl/(z acapacitor. The capacitor is initially uncharged. The RC combination is ch/93 v/z,j zf ol(pasysarged 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 then connect1 xmf4a t6jvv.ed in series with a 3.1vt6mv 4x f.aj0 $M\Omega$ 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 re scvac 9+ gckn/u0 3sag.1/urzsistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a coil with a resistanceu *wmgxeg -w +88l7vnq7 ts:oi 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 klncku,m.j5+:j d l .z100 $\Omega$ 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 c zw).;i*qsv fhoil 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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