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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 tes e:kvw 2 bcf vo9+6(cexti;q)rminals of a battery, when no current flows tvo)b 6;9kvqce(exsfc+ 2 : wito 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 fl czoz,odnp nj-26-wn: ows to an external circuit, is referred zp:jc zwon6d -non,2-to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in series to a batterzgf e5* cx6sa0y

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connect(6zdla+h903mzijodb xxab iv w+/n):ed 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 -wn s7vziv/ /kconnected in series to a battery. If the current of 12 A flowsnvw-vzk s/7/i from the 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 resis c mcypk10h(6ono. pl(7e/timtors are connected in series to a 12-V battery. What is the vol.om(7c0c6toe 1hm y/pkn i lp(tage across 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 constant voltage source, oq )91b:5z0u:1azovm fpjp bmthe power supplied zq:b9p fj mzao:mp1)0 bo51uvby 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 resistor r: ncpqix8l ddf-+;,as are connected 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 can be certain tk 6tpgjre hc2:y.u8xa vly+8+ hat

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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 pa3*oeodilse 5,rallel to a 12-V battery. What is the voltage of any one of *ooe 5sdl,3ie 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 0zc,x1 dof6kq in parallel to a battery. If the current of 12 A flows f f ,1k06dxzcqorom 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 Christmpc1qmm7 b:b :;t4rosi as tree lights are connected in parallel. What happens if one lamp burns out? (Assume neglis:;rbpc:7 1otm m qb4igible 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 constant voltage source,bn;rmcf 2f t0f 8k.-lz0wz/ pts v12pq the power supplied /fns20. zv -lwp2zt1;bft c0mq k8frpby 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 resistancdun:6eqa*p9*5.s o jy nxss6de R. The 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 netwop6as o*x96 n.eu:q5*dsysnd jrk 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 junc 7b0bq+nt qd3oka6f k:tion 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 rj8(wm jx*pobgr 8z 9kfoz0z+ )ule.
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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 exampledb a840)+dxl7 9edmrsahh8 yp 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 exl8k*d sr ah83xample 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 shown? /k(f:iee2 /svl:nlbn8 ue 3m i


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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 k/9 ossall ( *w7njr5tin series ("+" to "-" to "+" to "-"), and place them in a circuit, the combins js9(rkl/wa l7n*t5o ation 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 stor4a e/kwbdv.o8 age batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination wi4da8. o bwv/kell 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 s y(b v4vx(9er w4bkf-xtorage batteries together in parallel, and place them in a circuit, the cof(x vrbe 4(wyv 9xb4k-mbination 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 batsx;sbr88 c 4uctery,

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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, hh yz2rr y58jnatv7 *)the equivalent capacitance of the combination increa7y r 5hv*r)8z a2jyhtnses.

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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 cgc. ;fza 8aex jjpw;x5x( /;wyonnected in series to a battery. If a total charge of Q flows from the battery, how much charge does each capacexw;8. /fx(a gc;w y;apjxj5z itor 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 connl6l .px pwoabvr+x 2*i6ezt+4 ected 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 connected in parallel, the equi9l7x (e iw3kf0wgbbi) valent capacitance of the combination (wb03b k)iei l97f gxwincreases.

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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 g,qmz9 n*06r/amx ofen4 -ice a battery. If a total charge of Q flows from the battery, how much charg6mcoz4 9-nmq0i faex e, /nr*ge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the quantity R(es;fle2mo zea, n-6hC?

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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 capacp*6jv6h ko .0xgajm/ ditor are connected in series to an ideal battery of constant terminal voltage. At the moment /k j*h0xmpjdvoa6. 6g 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 connected in serzri / w t(okmxop2/2n.ies to an ideal battery of constant terminal voltage. At the moment contact is made with the batteryz n/.pti xo2/(km2 row, 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 connecter/m,/d o0 r;xcndp-; a/kt buwd in series to an ideal battery of constant terminal voltage. When this system reaches its steady-sau/;np;0w db k/ r/, mrtoxdc-tate, 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 shouv8;j)7 brw)bow7 3vgl: ngupald

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can be converted to an ammeter by the adefrzc *n7s:3yygt;+ kdition 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 obtain a,fqv; be6tbp2:m n)0ui2wubed by properly placing an ammeter in a circuit consisting of one resistor and one battery. A ;bvbnw 2qbautfp:,2 ime) 06us a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammeter' kh3 z6 f;4igbhx;ldg5s 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 vzg ju*g g;q4w;ng,hlv 4+(.pkjqtd 6zoltmeter from a galvanometer, 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 resistance of a voltmeter's series resisc -4nhe3(knoo88wgp m,gjl0 3jyxv 0 ctance

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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 fdn5ly m5f 4n2+igfj.-7gczc ,-o tcp a voltmeter across a resistor. What happens to the total current flowing in the circuitf5nfcc.-j-z2n +7 ltomfyd5 ggip4,c 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, and a jw, l6qol xi-xav6s9;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 ammxal -;i9v6xlw q6 jos,eter 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 ammjsz+y4ak;up+v est6apf2 2-* mir1cceter, 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 reseipcs; k 6t+ z* +sm 2ra42ucvap1f-yjistance 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, 3.0, 5.0, and 4pe5 n.* ni 4u7xsnq:jk.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, 1p-er3fj8g9vuvh;n /j m*iv(v x c/im12, 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, an(eqfyx4 8a,r:g v oh7gd 6.0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combination of acf2v;/a1mu y ,k)kqg1tyk h)y 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 se dip*sur6z4 8mwtj 5gx z/+/mr-4fi bdries 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 0y* t mwln1-g4)1otgdn/uhg pparallel 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 into a parallel(r1k nc g;vh58vlovi2 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 par h.i0eeingrz 2.e2 lz1allel 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 applianceidz/s2r vuvpa zv+sn0 x3a 1+851powds are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time whaa8r az oisx+v0p2dp/dv 3us5+w1nvz1 t total current would they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum number of 100-W light bulbs you can connect in parallel iw;t2r* 9iogy7 *,v pvcu4hyu tn a 120-V circuit without t *o7r,h 2vyi*pvc4u ; 9gtwuytripping 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 2.01 ipb o+ u.8e ygdo+v03/gcayd $\Omega$ resistor connected in series with 4.0 $\Omega$ resistor is connected in parallel with a 3.0 $\Omega$ resistor. What is the equivalent resistance?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two 4.0 $\Omega$ resistors are connected in parallel, and this combination is connected in series with
3.1 W. What is the effective resistance of this combination?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0 $\Omega$ resistor is in series with a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What is the equivalent resistance of this combination?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 15 and 30*6,mv wiqd mw. $\Omega$ 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, an ohesgwi:g, t4b7wn*k wa4cdh:kk +, (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 and 9.bc 0dskz(fem5o57 z i60 $\Omega$ 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 and:;4on8cifi0y-d rb um 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 yuahv 6o-yda(+ve)9pb+h: y rand 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 cir )5n8c :uug;lnaw0)x dbr3 lkbcuit 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 throug10w9bmiyql5ta9 3ohl /dmeb4h $R_2$, 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 Fidq m8-j-+ qg q:ngkgx7g. 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 current in t5ikm +oocyw70y wvf4rf/4h8 z w,dwf;he 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 cn+ d(k8sbaht 8 v2zwo3urrent 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/ar qcbcgf/s+v 47d-n 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 Fi vgy2o zlz,-)ev3,jvng. 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 of8x p nk tz93 0xajbu6u38sc5zd point 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 D relativguf76 sjc+l( -ikx /cve 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 battc9/ wbodbjjogz.jo( d;e9 3f-ery 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)m8c1jprg ere45f ;mB 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 the 7y0;dsyf:x wy u:au 19i $\Omega$ 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 currenpbxx/) )ddphw :ziob.:c h3w -t in 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 in7g+ y98 kg q6 lxldxrnsk-qwd ++i4b3n 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 12m:,fstsmbf ,xxd4g;xc/ly1 7c -e2jc $\Omega$ 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 j6+vun(bsj:sva d5 3fthe 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting th -/w)jhg;tl1 9 flinoje upper left and lower left corners?jl9gf h1;) i/o -ltnjw

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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 capaem jrzy/k8 *l2citance of thism* z28je/kryl combination 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 50.0fe (5:uqydt 43iejx+.gtgm o0 mF capacitors are connected in series across a 12.0-V battery. How much charge is stored in t5m3jygg40:ot u+ edxit.q f(ehe 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 con4v *;2zzbw fdbq*y k2rnected in series across a 12.0-V battery. Wqzbr y2 zvbd2w4k**f; hat is the potential difference across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected )j ybxau8 xg0,in series across a 3.0-V battery. What is the volu a8)jxgb0yx ,tage 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 cl6 bj skth1x(2j/,a5v4k janmonnected in series across a 3.0-V battery. What ijvnhj /,(l6xmk41b aj tks2a 5s 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 capacitorsr g:3c*y9 libn are connected in parallel across a 24-V battery. How much energy is stored in this combinatioy:r 9 g*3blcinn 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 mFle9rn6 j-c3 .mr wdhu0 and 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 this arrang rrn m6.0u-we9jhc3l dement?

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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 c5l5hhn wkvng2ld 7u o:3 9v9c07r 6hlids7nnronnected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacinnd2v u73grs 7 nh d70vl9k9h c6n5hr :w5lloitor. What is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. The combina,us rh(h /yob+tion 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,hh( r/ybosu +-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 a,r mj(7ym/t xare 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 voltage across the 6.00-m /m,y xj(r7atmF 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 4r(4py-bd en pmw(- vtthrough 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 through n,8mo5ezc9 ljjkm*f : 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 l-:pc fd.dk+ 2zbov a/with a 0.50-mF capacitor. The capacitor is initially uncodb2f :d+/ -zaclv .pkharged. The RC combination is charged by a 9.0-V battery. What is the change in voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged to 6.0-V. I,b55: hgn*ups9e x64igcq pbvi4c9c o t is then connected in series with a 3.0gh:uons c9xvgi,5cib qp9b46 e*54cp $M\Omega$ 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 100mipf 8q twbxfw*u2 4txr6 juf*(mq2l 02f/vx7 $\Omega$ 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 win4 re1ectxo5l64 ;pzl lcz1hsx/ y z90th 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 ru vx0 vlng-:*xk;a-3 wexcv/ $\Omega$ 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 co*)ztdo:6i0z r i 4flu n2vuvg)il 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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