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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 t ktj-ep6keu+,e8 6y ehhe terminals of a battery, when no current flows to an external circuit, is rekeyjkp,+ tu-6e e8h6 eferred 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.kr4 .t0ek 9rba7/a twk2jismows to an external c27ie. 09awr/jsrttakbk4m . kircuit, is referred to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are3yxvf. 6zgo*e ya 2f;o 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 connectev (opj(8b d7wad 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 con126p eg -pw(y*l vpalenected in series to a battery. If the current of 12 A flows from the batterge2-ypa1 lpevwp *l6( y, 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 12-V battery. Whubp5ud/v d)s4w0roc xrw ;.-h at is the vol hd s);b.v/dr0xowu wcup5r-4 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 xn7z9(k)7 *j:msyafsb tfmip a s49) evoltage source, the power suppli)s 9maz(af nym: ft9p74k xbiesj7 *)sed by 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 arl ztb* ,9d1,.brbdwube 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 cerbw7 tseks+o+ -tain 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 4lq; e 22cix 69 cuks.jqcffw)phw w53parallel to a 12-V battery. What is the voltag2lcqw4 xju9.qw3 ;f 65s2h)fkw pciece 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 connectafkl zvy* 0h e8e-lu3;ed in parallel to a battery. If the current of 12 A flows from the battery, how much curren;kzl0le* 3a 8yevuf-h t 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 light 2gmiiawz-o). s are connected in parallel. What happens if owiz.) a 2gi-mone 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 constant voltage source, the powe0r2dvq cel,k. :;fi lgr suppgr;2il:dfvl .0ec , kqlied 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. The6r9omrm ,) bux-whe.y maximum power each can dissipate is P. Two of the resistors are connected in series, andr ruy mho6,x. emw)b9- a third is connected 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 -zpubb..(q .)hx0wqcvu ive(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 ruleylb)ljp we)s)lo6 6x /.
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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 atxb) i+bxd2)9anbck12oi-,csh 7d f a n example 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 example o7)abfw2 -ywb./ndio rz/rl: 9wc dp* vf

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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 b-yqgsu y foinp926s, , s:f-pthe 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 seriqtn3db6c5/t+ ; u.-8d0 hs q jyjnhslzes ("+" to "-" to "+" tcus8.htnz6 +h qd;y/d jt0js qlb3n-5o "-"), and place them in a circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("+" to "-" tokc1f:ieq d7+6 :wjvun "-" to "+"), and place them in aqkfe1djw6uivcn :: + 7 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 battnkt( p: x0+yoteries together in parallel, and place th0p+x: ot(ntyk em in a circuit, 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 connectjbj3)00cvv co dv jj2.ed 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 capacitorl,0xif6p dp*ss are connected in series, the equivalent capacitance of the com d plxi6psf0*,bination 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 in series th fbx9p22bvd 95x/rzto a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carry 2b/9 vhd2xztpfbr5x9?

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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 s; fvcq( ip 2-alrofq14q.o*uconnected 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 s02 iw)k+/z7g , avcqyywouk /bj+5ed connected in parallel, the equivalent capacitance of the combination increa,y57 a/+e ckog b0dw z)u+js/vyq2kiwses.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical caparv(3.kz axt m6citors are connected in parallel to a battery. If a total charge of Q flows from the batter .zt3(x kvm6ray, 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 s9d/m yb36wc-h)iduo.x.iu s the quantity 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 ;2+5xtp;ev f menpbl5s0k /agconnected in series to an ideal battery of constant terminal voe5 / l0ptx;fskegpnmab 2 5;+vltage. At the moment contact is made with the battery, the voltage across the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in serik m,nolty7;d 0es to an ideal battery of constant termin7ml ;o,tdnk0y al voltage. At the moment contact is made with the battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor bg5n97n4 *aftoxsw -7d,lgx r are connected in series to an ideal battery of constant terminal voltage. When this n4-agxrx fs 9*t5 ,b77dgol nwsystem 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 shoulvzv61js+ ijz( 8cefu0d

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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 conv vm5.02r.k;zep 56 sqztnvjq ierted to an ammeter by the addition of a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obtained by p7do+) s4w 9k .erpbdebroperly placing an ammeter in a circuit consisting of one resistor and osk d9w7 )erd.pbebo4 +ne 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 resistanc h8p2u yhtpn4a4;3 0okq1s6hpjnno :te

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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 normally wouldnj nd5h5jcw.;36wzss

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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 resistancesqvum10y26h q u36 mse

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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 byz61i4blb s 1oc placing a voltmeter across a resistor. What happens to the total current flowing in the bsl1 6b4z cio1circuit 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, ajcl.ih;8a* j -3tvdxind 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 vo ji;vhj*dt - 8lc.ixa3ltmeter 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, and a voltmeter is 8km0p0jew7 wo+ff0 ugg)ij 0t placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, to+jw g 0 e 0iuwjm7kf)8g00fpthe 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, 7 m4r 1mbbv7xznycofx1y( 5u-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, awdi1w4w- n7l jnd 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 q9bbt8 f4uf*, hx*nt0y: rotaeomx94 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 seriesq2op3a g; 9d60r.nwof*vckx u 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 searwj u5w 1 w:udvl+: u:);xeefries combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combibj d+b ur le(6zp;9eyt).tt9qnation 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 a 4. wn;:vo1cjz. pwj)j d,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 4.0..kore;.qn t8n uj6vh $\Omega$, 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 chp*(-5(p f7f)qx fd kut6exa c o/z:kfircuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were opzx-k/f( 7 * d)6c u(oef fph:x5atpkfqerated at the 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 ligh gnnjo)x-,r:c t bulbs you can connect in parallel in a 120-V circuit without tripping a 2cx- o,rn n)g:j0-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 d8s*a+ndp4um co v8pesx 04+ q$\Omega$ 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 3l,xfo-e n:.rw 0 $\Omega$ 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,o:zrhesa,iy 8qdn,, 5 6.0, and 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 95w eyh)n0arp.-4uc ip.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 and 9.r+3p 2mo:yv bo0 $\Omega$ 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 z)/(-7 +oknt rtsov9/zwe8u6eolys e 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 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 resistanlg rpz;z ;)bu0/6kt wsv *0tzfce 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 throughss(03btnw i1d $R_2$, 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-p:sy; h:rtz6yi p jb: 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, determine the curre:**ejqy7zsbfhrfmejl 2 82, l6/ospv nt 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. 1czt/xy: dp1-0h+ 2shlvqx l2fw, waq/9-4, determine the 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, determinv ym er(;obccj ,fxhms(o;/34m5g7 mxe 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 poincvm6 zhd in0h.f,z .j3t A relative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to point C in Fig. 1izu;r8,:)d bctn3 8+ejga j+dsz ; zub9-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point D relative to point C in Fig. 19-5ujxbduitn4v1+-8b(c1zhi ti 41.rxc ?


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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 b:n ox8l3/1 m6t*ofkafkhg * bdattery in Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A to point B in gu(b 1pvmd ;3mp od5y-.es o-mqn ef88Fig. 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 thnyp, ni xa,h 5.u:tg-je 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 in1 wb8 -ci+it,(i7l igs moh(af 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 inr/ yu7km4p2bnbf u1b1x*k qk. 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,gsfz:to 8sdpb l7n ,2 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 in t5c vm1gpi zs(fy9w-gd g-8r9l .0rad whe 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 lower le 5q t; -brbn;3p8iuuayft corn3 ai;bbpur58n tu;qy -ers?

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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 ija4 qk/a1) l8oxkxdb* ndqg);que8 m8n series. The equivalent capacitance of this q;)8u qoml4bd) a1x*gxk /8nqa djke8combination 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 capacitor1v9:uzxc9fteb7 6xjbs .qg4x s are connected in series across a 12.0-V battery. How much charge is stored u4x9cbtb7xg .jf q1v9 :exs6z 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 capaci*r qk6ni cnm10 jjvzo63;cp b.tors are connected in series across a 12.0-V battery. What is t 01ccm;j kvq6 rbj36 io*pnnz.he 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 series across tuzk.hu7.h 4jp su:tnz) m;( ma 3.0-V battery. What is the voltage across the 1.0-mF(s .j4 u;zp).m: tknhz 7utmhu 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 connecte7rd06lm mvc 15 lbkkzoe.o1 j7d in series across a 3.0-V battery. What is the voltage across the 2.0-re 1 ll175o7okmd6b.jc vkm0zmF 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 areus35x0 ta//sbscmm.-p h 7qnc connected in parallel across a 24-V battery. How much energy is stored in this combination wh0x- /ssmcmhu/7bs qa3 c5.ntp en the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, and thislarjq6ib:8il58cq9 a pair is then conneq b8ajclral9 : iq856icted in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. The combinatixp,0 t.+xkgtaon is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacita.k0 a txp+tx,gnce?

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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 andnsjh ua9o1;,( ar4 ovqy h+8il 8.00 mF are connected in parallel. The combination is tholquyr4n91 os+a8 h;ah (i, vjen 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 parahs w3(;zq/c frllel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor.(wqcsh;3 z/rf 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 mvi*7ne (wd: b, dql1tthrough 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 ivn a x z 8hft32mw)lsx+sij/1eq1r.3 then discharged through a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a 0.50-mF capacitor. T-xdj9yxy hc7o- hkw 3: -xmv,ahe capacitor is initially uncharged. The RC comb3xj--- x: owa dcv7hh,yxky9mination 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. Itf s usz8ke xn 0z9,jwjp3o(;7x is then connected in series with a 3zs8fj(n7 so,ukx0w;zp9 3je x.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 resistanf -e-ohmm3el ) kbhex 5-.hn6r +. m;sr1pnuqgce 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 a08rxjrh tb(09gwayb ,fie**q coil with 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 r: 6gydhidnyiv7x2 gr96gr 2x(a4rx1 xesistance 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 40.0 thy3)et9kx8 fjt.4 vs$\Omega$ 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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