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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 no75 y3vrqjpxbh*enuh29c k .6x current flows to an external circuit, is referred xr 6 n*ucq5ph.yek x9bjh23v7 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 cu3) mxk -g/vqpyrrent flows to an external circuit, is referred to asgm )-qypkv x/3 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 resistgm+iwt ,4 1n2hz92 pih p,xaod v/ke0tors 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 ser+ :z3(lt3llt nk)sa cmies,

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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 serie z8syd 9cc/pp5s to a battery. If the current of 12 A flows from the battery, how much curren5cd 9spzp y/c8t 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 resistor.t eklhu87/c 7g9m0opz isb+zs are connected in series to a 12-V battery. What is the volta z+umz90l7ish /o7 k.cg pbte8ge 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, the power sm 3j98tt z)yu ja29ml hog5/; imij3wbupplied by the sourcja;)z m3btu9l mj 3h8wmyi9ij5o gt /2e

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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 resistorl xkz+x4wfb,(ifbed l( w0f1*s 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,:13z4iwsa* q u7ekz. :or f*zoglsa*e;a4lih 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 connected in parallel v)afdye:i k;2to a 12-V battery. What is the voltage of afey;k2div ): 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 resistorxyoxtdq*2r+e 5)c r )rs are connected in parallel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the) qrro2xy + d5x)tcr*e 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 Christd0 0o.z1aj4-mihjaedb7+nm b kcs, )rmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistanc aao+hjk)-ibr, .ddn0j74bmcs 0e1zm e 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 constvbhf: g3zw 0/kant voltage source, the power supplied by the s3k gb:0/hvfz wource

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistorqy* (wrhj.,xj( oh5 whs, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is cono( wq(.yh5 h wj*xr,jhnected 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 rule.* fe5glvenu8 o+7sau1 (wifhx/jdv *.
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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 ;dgl yjytxl va.6 lq8906nvs 6rule.
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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 examp4* yv vn/t) ;sf*o mghl8t.xitle 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 exampldaxvv9g d40l/t/ ) gese 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 val-;ym ey/vmc*4 fuv+: ccdv;haid for the circuit shown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("+kqmztnh/q tv 9ropc)82o k+; ," to "-" to "+" to "-"), and place them in a circuit, the comb+ qcq8ton tp /k)rzm2,hkv;o9ination 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 p)xd 9ih9z-p9okw +bptogether in series ("+" to "-" to "-" to "+"), and place them in a circuit, thpp o9khdzbxwi p9)+-9e 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 stosgx++ b j9jf*qrage batteries together in parallel, and place them in a circuit, the combination wix g f*s+9qj+bjll 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 connectedzy /lm2+xc kb(3p ca)e 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 equivalent capacao5ou-6h ;ojbg, kz 7hitance of the combination 6zk;7hg ohbooa ,5-uj increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitorsiaaza ad7b ,:4u2 n,ry are connected in series to a battery. If a total charge of Q flows from the battery, how much charge does each capa 2ba,aau :,dyr47iznacitor 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 battery,mdeez);0 wu8/yz op0j

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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 paralr)fti85up-h)ac; qe e lel, the equivalent capacitance of the combinaceta;-)qhe 5fru) p i8tion 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*+ wm; m o4dsyluy9/ih battery. If a total charge of Q flows from the battery, how much charge /wm + d 4uyimy*h9so;ldoes 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 6dx l.72g tu kr s*4wekq(7+wu9giwglRC?

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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 conn -nag-(qxe8 g3mzcl d5ected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acel x8nc-qgmgd 3 5a-z(ross 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 batte vw ik48qe mc5p2+8fl mic fdn-;mc3c+m;pk0gry of constant terminal voltage. At the moment contact is made with the battel2 kpq dn; -+mci;0p+gvmcmef8i mf8 wc34c5k ry, 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 seriesedr,n,( 3+bhp(:1l u equvdro to an ideal battery of constant terminalou b:lu(1,+qp ,r ddevh3(ner voltage. When this system 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 sho9gz i(01ey6rfpxnjlq2r;m t:au p3; zuld

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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 6i 5uadzl11r8bn7 tco nbpk5;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 obtai1 m yiwl,i3gs*ned by properly placing an ammeter in a circuit consisting of s3 ym,g 1iil*wone 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 ammeter's shunt resisb +wgf y5/ylw,s* gm*htance

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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 azj- baxsqs qd1g 12p-/0 iwmp+ 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 vov6ec0k*r,vipn d3 )prltmeter'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 volgvf.bo7hj 0kxt5p;7pgu* hr1tmeter across a resistor. What happens to the total currenrj0v7g 7ftx 1p*h;u.pgo kbh5 t 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 ty(.p n8 brnp6msz k52ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a batter2st8rp k(p 6nmybz.n5y. 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 ammeter, anudwg/;*lxe t: h6cfg*d 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 resis: xf/ wdl hgeutg*;*c6tance 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,brt/fyt1p 5jt gq7v)+ 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.fe ic)3p) of+d0 $\Omega$ 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, a8 tcl6*;rs bmznd 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 combinatiomhfgr bvq gk/*mlnb: 2.57 re2n 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 comf,bq6 g.,isqx bination 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 combination of 4.0 wg2 wm0 +,a tmflkbt/ qee.5j:m43fwicr +5vp$\Omega$, 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 paralhb r*hrpb 6i: ,39far8o0 ofullel 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 ij + jx7xh5yxh-nto a parallel 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 toaster,v0h3dg,z ctxdx:h,;h 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they hh,3t:dh; 0x zg,xcvddraw?

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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 z)x+u 1px 9rfi100-W light bulbs you can connect in parallel in a 120-V ci 9ufx )p+x1irzrcuit without tripping a 20-A circuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0*3zkm( ou5zm4iwjv4 n $\Omega$ 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 a 1m+luaaz7 apo9/m 4lund 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 1h67(n*f 10z4tqclemlwo, x 5f*g sjog0.0 $\Omega$ 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 93o9.zpd v)z hx.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 anvl.f.vq uzi2ctq- p3q1q ,h-qd 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 z86 .us9gdm gj9.0 $\Omega$ 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 in Fig. 19-2?x3,nmqwwv65x(dob c8


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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 throughl 5y 5x6aejlxydyq0nvv;* 20o $R_2$, 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 resistad/ uj vy6cht0fxu 9 qvw4h:c*a81c:fence of the circuit in Fig. 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, determi yqbg.j )c9)o-bb)q xine 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 thegn, :jl d(+/auuin(qtb w1qk( lht;q; current in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, det-if bitm9ib3 +ermine 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 pointk3t t0x 9;rz4lxi7y dr 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 relativbd d8/wvalc mfgr)6 (ih2nl35e 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 re y* :;;ee8vrmzzei5a sy++bb olative 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 h2e, ymp;ignr+l7 tg 5the 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 fro( ussv(yu q; u7zbg8y8m point A to point 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 currenvq2 xmgf+ m4j/vt(u 9vt in 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 myre:*0 -2:y/nflaoux sjwb(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 curren gl5hd pu;k5a w9x93rma+s (qst 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 r5cb-z vo,hb7the 12 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in thegxv(f8i. 8s5gnp qr j6 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 the upper left and .3//lusi)q;mq 0fcrkd*dgp flower left corlp/k cf;sd)dgm i/* r0q3qf.u 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 connected in series. The ebi0p1xdkzh6dir 6 27c6gz3 kh quivalent capacitance of this1kxdi h6p6 63gh c bdkr7zz0i2 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, anx:4-uzbb+b o9f zy /1 r7wuexwd 50.0 mF capacitors are connected in series across a 12.0-V battery. How much charge is storyfb uzu+xxw :b 49/7z1 eb-rwoed 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 across 2lk5s 5pm kbj)a 12.0-V battery. What is the potential difference across the 10.0pm 55k ks2)blj-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 connectgvos 4z6y-d+ led in series across a 3.0-V battery. What id- +g4los yzv6s the voltage 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 se s o+wukth(ljt)un 340pj2s *zcsg;9wries across a 3.0-V battery. What is the voj0unp9 (*s lcj;ks4tg w+u zo)32wh tsltage across the 2.0-mF capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors arex9v kt9o,, 5nfuz/npe connected in parallel across a 24-V battery. How much energy is stored in this combination when theufnzo9v k, 95x,np/te 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 2me:1o/ b iw4jry,37iy2vzex9p x ;j ko0 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 arrange1;w x/i3p74rk9ezyoje vo j,ixy 2:mbment?

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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. m )eiz-s*zt*l;vi:pmt(te a3 The combination is then connected in series with a 12.0etliaz e-ivzs m:p(;t)mt* *3-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 8.0evr 8cptnqj5/w 88omc-uv9;i 0 mF are connected in parallel. The combination is then connected in series with a 12.0 jqrov 8 8;98-ecu5c pmn/iwvt-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 co3g:6 rljmcg.9hwqp: j- dfq4xmbination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across tq :m-. pdxgc:rhw9 6jg 43jflqhe 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 chard 26-b h(jkf4l w.esgrged 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 charged t g+-fynptu a55o 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 conn-gr1atchqe rvv s0yf:/u-- 6zected in series with a 0.50-mF capacitor. The capacitor is initially unc0qt6h rvg ysre--za-1/v: uc fharged. 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 9 faf4gklla7vpv/; i2. It is then connected in series with a 394gl pv f;a72vlf/ kai.0 $M\Omega$ resistor and connected to a 12-V battery. How long after being connected to the battery will the voltage across the capacitor be 9.0 V?

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99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal gw ko6ezrc2j8m);2esv4i r ) zresistance 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 resistanceen 2tdpdz1vqvd 1*(e7 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 inteeza*gv6xl- ph kebo1t )2* nz:rnal 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 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 of 40xdg07f ;; ygkj.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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