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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 curre d pij+5b/hq69elydf/ nt flows to an externaf/ +9ipjb5y6e h/dqdll 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 terminae(zdz:urmatvs k +o-h)f0- j; ls of a battery, when current flows to an external circuit, is red-arhk mz+j0t :zvo(ues-f;) ferred 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 resistotke)h -6 imyqm ww4 jv/w8s1k0rs 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 in7gtvzyas ez pg s; ,sx)q;31j. 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 dz/cs8dubn ,r3(s qetk0i.*b are connected in series to a battery. If the current of 12 A flows from the battery, how ukcn0s zr 8,q*t(d sd3.eb/ib 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 12-V batmv4hao(ocy)cv eq,wq5--1 g,mhtu ouj)am +( tery. What is the voltage across any one o5h4wo eg) -(mma v)cqayu ,1hcto-o+,uq vmj(f 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 constant voltagshkvf)/ + e:dve source, the power supplied byd)v hev+:s kf/ 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 parallel 3vmulbp5:xic;x(/8cz m*w5v qy ugg3 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 thu*qv 5/;y lkvh*c x) jlk7ff2hat

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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 par7w / zz 5ro;z;1ryerdzallel to a 12-V battery. What is the vo7 zr51;zewryz zdo/r ;ltage 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 connected in parar43n(dpxl; r5a; :pfgzad)x cllel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resi);5x : 3p(n ax calrgr4zdpfd;stors?

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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 parallel. What /s,);- bd ax*kilnmd mhappens if om a,xd/;n*imk lbs- )dne lamp burns 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 constan.z) eo(0zm89( -y( sc gmidnfpt wnep:t voltage source, the power supplied by the souwsct m.(d zmoz )ig0f( ne(e:89ypn-prce

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistor fczbv/o h*3,*7 wsarys, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in paralleofzy*7cva whr3 *,b/sl 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 *lsxitmxab3v*j 9k89 ezb06 w 85ykpdrule.
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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 qm+u kh-yzbmsq:1h x4pnc6 67.
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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 j ;r+2jvk m x2zgkn;e)nf9)ioof

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction a t/8 ah :n3z),rbnlihrule 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 1,lcj s ejd7ab x (vu0a6g))twshown?


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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 z:f7)e.ktjkiv yg;sh*pl/ 0 astorage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combinatkez/. h)fv0jitp7sk;g a l*:y ion 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 storsyq:tfis; 54l age batteries together in series ("+" to "-" to "-" to "+"), and place the;iqs t 5:yfs4lm 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 identi tn.xc /u8oau,cal storage batteries together in parallel, and place them in a circuit, tx uonc a8/.ut,he 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 capp1 /v p1eh9rgwn (0ompacitors are connected in series to a battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in series, the equivalentvur6a 8 :godxx6zxj7h4 *kh*ixr+t. h capacitance of the combinationxtrh 6x8g.6+ 4dx a7zhi *rju:v*ko hx 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 are connected e9hw ,zz27l/;wca t1c 9luhfrin series to a battery. If a total charge of Q flows from the battery,,u/zztrech 91wf l l;h7wc92 a 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 parallel to a vn.4u22zi: k(dscdbibattery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel, the equivalent capacita.fhd e5g.;oo rx w/q8ance of the combin.a/f qhodw ;.8g erox5ation 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 battegs5+rp ,gke r) zu 8nqg)psx0q*n saes8fm-7(ry. If a total charge of Q flows from the battery, how much charge does eacen0su8gr7s *s)pq n k,e5z8gs-rqg)p+(xfa m h 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 quas n4q apv6p i-,k6o1ientity 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 arzr.vrn: cf r4o--6twje connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the capac .zcnfrovrw- t-:j6r4itor 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 mrze+ q):p7 a+mibqc( constant terminal voltage. At the moment contact is made with the battery, the v(mab :+c)+zpi7rm qqeoltage 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 c cqmy 8a f3v4-pfx,;)p,aft xaonnected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltagefa;av) qfc8x,x m,t-3pa4p fy across the resistor is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shoul:v ama: zfhxff,ut8r5 / dksm(k(a+t1d

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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 ammeteo qcu4riq. g*8r 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 placing an ammetz -vp*2vl jaev)h u,xr 0p76goer in a circuit consisting of one resistor and one battery. As a result rvaj-uv0, *vox elz72)h p6gp,

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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 shunt4kt,:8z oqwsh 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 gan+u:6 q+ *tpvktdj( delvanometer, 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 resish.h11 keh; h e +redp-u6cjrm:tance 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 isuuddqpix,+n + .)q1oc obtained by placing a voltmeter across a resistor. What happens to the total current flowing in the circuit as a result of thixqcd.nu+p ,o +1) duqis 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 w+eteeg1g 3 (c(6mzunq*l5 ur lith an ammeter, and a voltmeter is placed ecumg*5 l6 ueglq1rez(t3+(nin 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 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 .eaxnb1c2 2vpis 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 voltmeter re1x e.ac2nv2pb ading 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,) l,g7l c:d vcyugdm7o+64hpt 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 z1bq7bu an v0ih,./qo 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.i.eq bk;vk v 1px+j4h*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 into7 v 51+uf7sk0t)yhbzjm0kdtj0 r. jaj a series 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 combina.lb2 oaxj/b/ 8cl: kmution 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 combinati4vqbjlm)4u7+ag rhn1 on 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 parallel combination of alg:tkv/c +3m c y26hbp 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 parallev70dus m6x4y7o - muf*o0y jojcm67rb l 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-Wz(/nws9x gdcx:z-*e 99puszz q)mbd7 toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the samex9:szu9-z /db) nx (zqpw7*zm9 gedsc 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 cof zp2, wypmm.:nnect in parallel in a 120-V circuit without tripping a 20-m: .z 2pfmyw,pA 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 . bfpq2;c nvcob **,ck$\Omega$ 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 76v y8kz :*u 9sx/ v;2rm( l fraafiu/hlr0abband 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 10.2 ,5recj x fo jim;b:41b1cutn0 $\Omega$ 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 1odf-+v *tvpt3 4rdw7sz p*lf 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 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 5.0fj tt* -keqj153h ;md9otw t,d 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 and ,rd- v28bnvm b9.0 $\Omega$ 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 resista lioszxz,1zsh1*me80dx) b 1nnce 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 2ghzp:z6 s,6f rm+ cko$R_2$, 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. 194e;qn. pp7afg jmuv:li*4p s;-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, determin t04 oolyg 1e,quc:6pne 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 the mr cktv 31hkm/1(v/de 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, dmec s :nbse(8i9ylfbu(tf)uw(7 )m-3u uud8w etermine 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 po56o rc s/;ibyyint 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.evlj/y)v +/rka p,d w 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 D relative to point d5*qm5s -ooztC 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 Fig. 19-6zdc0t0 hq 7 x+nq-h)f6knj8jkqn+gp5?


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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 d(;rq wz5jf(f:z mp2r a(fat0t 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 is;ogb/ ogeqj1eet x3th,.q t) f+-- mbn 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 : uyhedsj3f6- vk 6x+pin the 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 i1ysh3a:pm g3mn 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 gb:m 9buh1qum.+a5hu 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 ia;v,ye,*b -tal r ghp:n the 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 connm t+. 1.t0 jxe60fb wu7fgdmsdecting the upper left and lower left corb 7m+tfwef 1mg6sj d. xdt0u0.ners?

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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 connea + r6 cih:eqs5,pgzs;x 6dr2fcted in series. The equivalent capacitance of this combinatrs6h:f;5g62qcsdzxap e , +r iion 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 seriej5fsumpg*76y8h+ nr m s across a 12.0-V battery. How much c5p ms+mrjhf8*yu n g67harge 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 ar t)ualow9t8s q6; vs*yseyy 6*e connected in series across a 12.0-V battery. What is the potential difference across the ;yl)qsves6u86 w *9ytoayst*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 series across a 3.xxl* s3bm rm/,,auo1( j3l yenfa n5z*0-V battery. What is the voltage across the 1.0-mF capacitbfralujxa,m/*z5*1 m (nyon s3e 3,lxor?

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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 battery. 9sx*b 2 nd9y)lo 0*)dbjzbfo0g ti2sl What is the voltage across the 2.0-mF c9ls oobzs) 9)2t i**lddf0nbgb02jx yapacitor?

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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 conny4ea7c++nwowy; 8 s)nt/ pgthected in parallel across a 24-V battery. How much energy is stored in this combinati/es;pyhg+ow )4at+ y nc8tnw 7on when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF ah dw /3osqktb hi3mw6 /6zbm(c0;nd gp1*dru2nd 20 mF are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of t0 /mtqd 6cmg1 3dpzu6b/dr sonwh 3i*;(b hwk2his 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 jk moa,pz*,vh6 7u/t rand 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor.,a6v7,/ hzmpokj* ru t 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 mwfqp33*us4x 0jgd0e r F and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF capaci*d4u esg3rw qf03x0pjtor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.0d*z3jw +4th:if (,rwtze/ns c 0 mF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-m:,s4wrz(hde/c* i fwjz3tnt + F 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 thz,.rkh m:wc kuz(y0c2rough 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 w+h * ,5ielkvjand 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 wj)x6 4enfta- rith a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a-xfta )r ej64n 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. qao942np u8w -kn+k;sva ( s0q3qmvii0-V. It is then connected in series with a 3. i ssa+vquo-k8w2n4n 3 ;kq0aqv(p9 im0 $M\Omega$ 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 10rg;hxa ; t.;-j1dj ljh0 $\Omega$ 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 g3yp(goa1t y3p1jp 9bwith 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 100 *75*ynw 4/tsbjw aiv11lmqew$\Omega$ 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 c6ue(ngrj3+ez oil 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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