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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 bezjsuc ;r2d,o+efh eyv j2,19ja62sh w tween the terminals of a battery, when no current flows to an exzscsh ev6h ;u12 e 2,ay or+w9d,fjj2jternal 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 flowsget,i0ufjk b y+ 69z*g to an external circuit, is referredygtg9z,*i j u0+f e6kb 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 seriesegjg f9-t(w 6e 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 connectedubb)inw x39z:n /f egg/bc2 9+qpva(q 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*rsnpjf55b d((k cjd+ connected in series to a battery. If the current of 12 A flowsn df5j(bpds k5c *r+j( 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 resistors are connected in series to a 12-V battay.unk51 uw/p zufe/oo.+dq *ery. What is the volta*qewfu/ ozo np+u5uya.d/ 1 .kge 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 srgq*hp :v8nk 6eries to a constant voltage source, the power supplied:nk* 86rvpgh q 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 are connected in parallel to a battery, vmb4-iey63a/ z8:pwbm8pgpu

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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 9p2 kfp1 fdryl6j 1gk;certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a 12-V batte*vsjxcc;i4 fbzqj7 q/,3glzfp 6;nd4 ry. What is the voltage of any 64z;i;3jvpq/qcdc*zlxn ,ff gjs4 b 7one 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 arem sa5 c4)80gf oteem-q connected in parallel to a battery. If the current of 12 A flows from the battemetcof0s a eqm485g-)ry, 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 Christmas tree lights are connected in parallel. Whao eb;8pf/yiw) t happens if one lamp burns owb8p/ yei)fo ;ut? (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 po )q6(u w+oxnliwer supplied by t6wqu(i )n+ol xhe 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. The maxj4ryw-jv-bv 4z6:y a 2+nquhc imum power each can dissipate is P. Two of the resistors are connected in series, -4-bvvza h uy2y+n4r j:qw jc6and 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 ruj 0em*a1nf)r3+ dt)7qg tv7 t)uepwb f .qs3ahle.
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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 ruleo .w7s. zfwf*q.
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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 isaqk/sxj;g;l 4 an 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 : md6t fk qkelvq32uk6m40ti3rule 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 valiwm gzc:ukmxw 3+nwk4:h9 t 7s,d 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 (" /x.2;szq-xq dyw w:sf+" to "-" to "+" to "- q/d wzwqy.x2-:fx s;s"), 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 seripyh+bcgw20o +n 2 +;:i tgnuw5c6dsqqes ("+" to "-" to "-" qg + +h;0:5sgni6u+2oqnbcd 2twywcpto "+"), and place them in a circuit, the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in parallz-vl0s qpe ew;g:u rj6(2l8uzf op,q7 el, and place them in a circuit, the comb peq(:e;uvu80rqf ,j o2lzl 6pzs wg-7ination 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 ableu , lvpc(0* 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.* q oo6 .xz3kuk(gvbl are connected in series, the equivalent capacitance of th6k3gvxq oz o.bl(.*uke combination 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 t l3m(2b p2psp8-hfszg o a battery. If a total charge of Q flows from the gpp(2hfbl 2szps 83m- battery, how much charge does each capacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in parallel to a ba-4lqk(- ffqre ttery,

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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 par8w/nomjxe4,xgu )w s* allel, the equivalent capacitance of the combination j* wsx8g,meo/u 4wxn) increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in parallel to a battery. If a total cht v 9t7 t8o0*6sdwrq-lvlw 1tyrcx+ ,harge of Q flows from the battery1rt, 7xov w9+ldh0rs l*qt 6vyct-tw8, how much charge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the quatl(a (j+ m8wrentity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ide 2r8o0ljyvqp(eql0v 3al battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across tl(y0rvqe 8qvlpj2 0o3he 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: 7pwf)ax+qahk j/6 bf an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the rxfbf+ w/7)6ahj q:ak pesistor 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 capaciw6yu/.xrg : v -6kgrw w(ep5yhtor are connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, gry6vr/keu(x5g-wwpw :yh. 6the 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 shoulub pg/ob rg.*,3k se(qd

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can be15, afvvz )so35ryljc converted 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 properly placinkqw4-c+g aohg 1ao)* h.t.j2p 1tylzo g an ammeter in a circuit consisting of one .lq k.a+a o*-tptgz1 g ho1)how c42yjresistor 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 resistanc g mqjfs,4side)5 p; ri.f1rr1 ub4ar/e

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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 15clmx :haob / jyv:9fimdxv p05 jw8+voltmeter 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 resw xl0:2f0 ijg94hwgw v4iv3rtistance

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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 obva ckalidw+,;xf ( v77tained by placing a voltmeter across a resistor. What happens to the total current flowing in the circuit as a result of this actiad7;v+w flkxic7 av, (on?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor rd*n3vc.u 1 smis wired in series with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network rsum1.ndv*c3 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 is wired in series with t/7wrka.ayu1*ed,t h 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 reading by the ammeter reading, the v*,d yae r .1thk/awut7alue 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 4. j6n/v7)twi+wos :j3bl4qkb y0 $\Omega$ 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 6.0 :jwt2rad0ael3h6 8n m$\Omega$ 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, jztq/ fkn* yne);.l0m 12, and 6.0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series co- +q6ngj g,/kict0sem+dg)a imbination 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 intoegw vl6wp:e3 ith-,s/ q1.nzk a series 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 i ic; maxy,b25+wb8 6:vybzr zx0 ao+4txba.hfnto a parallel 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 parall-)k jpaj/umw(6yttl7uoy/ q:el combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination of bocm:ayzf0ixl (y1 0,x9;vn ya 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 connected8 ,eeouyh*c ) unp;uc, to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would t,)h ;c*uuecu e,8pon yhey 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 c6m0 upk-o8l5ky w5 uesonnect in parallel in a 120-V circuit without trippinekp5m05o6wyu kul 8- sg 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 wc/ r a6l i:d7+s.t.) ipd1ouxj. uz*m/bhmgr $\Omega$ 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 3081,lhs 6txgp:crhy/e $\Omega$ 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, 6.0ywbx3iutv r+ mdqg21( u*: c2u, 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 ,.j o,w3qd7 ev 3 hhrqfc+z6ukand 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 5.0 and 9.0 b io 41j8z ar*exzaf-)$\Omega$ 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 ,.t ,(mxj iw,bh dm7ebl/tdd +q) (etvi eyj48and 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 resimwgctdooti/g 4;e6,6 stance 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 v /q2zgkpd, p(wei 7o6$R_2$, 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 circuym.22r:p3q hg/vyks ky ,( i3wmo6zk0ii2 xdait 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, dyulo*bj9( m b+b4+i j4cv dr4tetermine 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 w70b nxwjb; q,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.)1 feqyzy vb/2 xr).yo 19-4, determine 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 or5a*hhj r9-k-pn n:utf point 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 tor 6, pn;f)ckygo6d q4n 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 C in Fig. 19-5?j1pwc k/.kt5u0olj3 p


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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 inlt w.jt (mvsug/y88e nw:2hs / 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 k k so1cll kabw-k :e/t,3)wk:n d8,ohto 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 current in the 7 sktx).hc;s(w9rzn/6- ,ouht adw x)g$\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 8 g, n6o6t-wxjr .qd4zp $\Omega$ 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 in the 4jf2 4avjt( ft6z.i 8iu $\Omega$ 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 ip xpn,8z10rf byv0q lym:m1c;n 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 thx k)-raz 2orm.e 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 )v hy(*g:2f0 v;c0pqsyab jv yleft cor*2yvqv )ga( 0 f; ychp0jbvys: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 connected6j.z38a *2yfh fo54 pyickvdi in series. The equivalent capacitance of this cf y 38yfj dp2iz hck.5oa4*iv6ombination 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 se+v8z n2ib67u;xbp6z;*c*dx uje u c uaries across a 12.0-V battery. ;zc xuuxbu7 6b; n 6p*2dei*ajvzu 8+c How much charge is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series acrossl) cda 8pt.y8k lmhcrm.35*oc a 12.0-V battery. What is the potential difference across l* kmpoy 8.l r.c3dh ac85tm)cthe 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 connect +ou;mjcv1me;g*-,ljn; b pfc ed in series across a 3.0-V battery. What is thvfcb; +1mngo*;m ,;lju- e jpce 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 /eanlk ial l r5 xb8dy23;k4sic25* ceseries across a 3.0-V battery. Whax*iae2/5a5ce 4l 8n;bry lls3c dkik2t is 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.xu50wf qsfakcd 7/ mn.ty5v*0v ,il7d0 mF capacitors are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capanqw, vvf0x s.d ui0mla75t5f*k/yd7ccitors 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 this pair iiuct8.*7+6, mxtxkhaxgr o u di0sw-7s then connected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangementtoxdug,i8x+ *.h7xs 0m6r it-w 7kc ua?

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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 c4;(5 d gwcmrwmonnected in parallel. The combination is then connected wcgwm r5m;4(d in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in g6:qe n/ pm k.0(+crcx- bxyxbparallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on ccnek +rx 6. xbp0mbg -q:/(yxthe 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 connecwua8 k/(qno9 fted in parallel. The combination is then connected in series with a 12.0-V battery anqwuo(nk98 fa /d a 14.0-mF capacitor. What is the voltage across the 6.00-mF capacitor?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged c*j4bgws glp 2g2o-i4 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 to 12 V and then u7nskph;- m1ydischarged 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. The capt7w1yjep;6a9u ws *f h 9kq5tcacitor is initially uncharged. The RCeku79*th fswa 51cywpq9 j;t6 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. It is then connectew st9:hdr.o1aw6v.yjd in series with a 3sh :.a.rdj w16oy wt9v.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 resista0weu:gyz we ,.nce 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 wiex l2p/bo 2u-lth 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 resist u/e1 wfs7qlz-ance 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 c)v,p1exg4 wh8(z z l9ptdv 0p+iy7ywyoil 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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