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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 badr 1 dafgr+),l yel81ittery, when no current flows to an external circuit, is referred to as 1+dylri8d,e al rf1)gthe

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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 flof brfwg*q 2nir865vwi.b u)/ows to an external circuit, is referred to as g5ff6rqu*o iibnv .w b/8w)2rthe

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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 shiehu1(,y3/ ,yipf(-js jney4xa c (weries 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 connectee)yz0h ip)/9ym c3 s6w(muw j3cf:lokd 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 connected in ser 73k;rx:dt ifnies to a battery. If the current of 12 A flows from the battery, how much currenr;idx t:3nk7f t 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 b;:srqx ,m3px i9 pnre5attery. What is the voltage acroi:5 r9s 3xx;en,rpmpqss 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 powerj5.fa/zo e1y6 hlvt0but n3+12qfk pz suph 1n. tbzuy+j5v6zfe /k32flop 1qa0 tplied 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 resist fecg w74o1z/vors 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 c dhnn-hs07zb7 onnected in parallel, 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 co7y/d 2b)mv wfb(- 8.pljpwvrbnnected in parallel to a 12-V battery. What is the voltage of any one of the resistpy.bd7 2bw/ wvpb lv(mfj)r- 8ors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a battery. we(oa )x5cp91 ga,dlm .j -cqv If the current o5p,cv9 .oajmea -)1gqxld( w cf 12 A flows from 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 C 2 iwdduc/r8l2hristmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume duc /irl2w 82dnegligible 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 ind xwnfgsl)q vu4 ogh (0uzl*1:(; g(no parallel to a constant voltage source, the power supplied by lno qof0s) g*(g;x4h(wz:1uu dlng( vthe 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 resb*aa n3k uq w(/h);onvistance R. The maximum power eacnbo a )kq(h;3nuwva /*h 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 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 juncthz;i2 im; /yds,.k svrion 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 rule(tg5u4o7jd/ nf( - ckr dbx*od5 (aomw.
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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 f ;y(b9gwzxn .(xwlj 3)vyw+f 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 rule is an examplss)b v2/;i, gi44t 9rp ltynvxe 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 i,/4tm e.m0q tbkn2rb hrijo 5;s valid 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 inq( /bj.xxv1q i series ("+" to "-" to "+" to "-"), and place them inij/bq q( .x1vx 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 s n abtt*q5g6m1torage batteries together in series ("+" to "-" to "-" to 5* 1n mqt6btag"+"), 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 batterien9drz p. 3evx5s together in parallel, and place them r9 v3x. d5npzein 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 zs27oq k 2 0wgnle 8v,e6wvn12lkvaf )connected in series to a battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in seri-xwtx x6-gxa pjl- ;,ges, the equivalent capacitance of the combination xgt-g ;awpj6 x-l,- xxincreases.

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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 connected1 t91 itrdw/0wm3h qmg)92a bwx+ rdgo in series to a battery. If a total charge of Q florwr1qwt 13t)mgw +2 a0 xbm /9did9hgows from the 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/ai ,y u*gytp 9z14dqkttery,

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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, thedb6lpa--+g zxr43ny q+ahk c 9 equivalent capacitance of the combination incread6qbh -+zn krp9a-3ylc4xga+ses.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacid;n6hyiza(u7 tors are connected in parallel to a battery. If a total charge of Q flows from the battery, how zhn76iy(adu; 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 quantity RCd,ky0( un ttut freho(ua*tk7x;.i mzj )278p ?

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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 seriesogq 4ga jgb.s3+h).j: eq -arz to an ideal battery of consta.-:jh)gb+ r g.3s4 joa qgqeaznt terminal voltage. 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 capds.0 du xoii(;x t9c7wacitor are connected in series to an ideal battery of constant terminal voltage. At the moment contado7xd90 w(;xs u ii.ctct 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 are connected in svtc3rr ncorgm v);, 60eries to an ideal battery of constant terminal voltage. When this system reaches its stead0orcr6 ;)cr 3 vg,vntmy-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 shoulqajh5vk ,7*q3vg upo6d

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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 ,3bo-)j t yo0m:tlwlj1fjocv)g. r8 u 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 placi:ed2 4 /vp)rxnhelg3 nng an ammeter in a circuit consisting of one resineg drp4) l en3/h2vx:stor 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 resistancym) s g4*s5kwu1-o jgke of an ammeter's 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 voltmnhb-bx.er6;b/h 9m(pp 7rni,bubjh6 ts8+tz eter 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 sasz2sny5 61uk09x )oeu2okkweries 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 voltmeter akk:piy,9y 8y scross a resistor. What haps ,9kkpy:i y8ypens to the total current 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 .o.hoirnxgy9g,,vo7 in series with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is the .o9, .ongr7iho,xgvyn 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 an ammeter, and a voltmete(oxvzk p 1 0d*vi*,pbgr 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 volt*v ,d1pkb *g(iv opxz0meter 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, andv yz0 r:4enl2ozj wew-22va l7yv-h0a 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, .5t+yly h9asr *3aedsq(cxp,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, and 6.0 0 huol7 nj4;pg71ry kg$\Omega$ 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 inx n3 rvtla1(6gto a series combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combinati b -uk5jv0+imm/j 1xe s9ly9nposiq.sd33sd 3 on 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 m0 d yn*w-*pauinto 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 parallel combination of a 6 v16sljl* txrugp j5-4.0 $\Omega$, 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 combina2kc2t9xmg/wza4vqa3x us1 b 8tion 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 tcfn3nyz .l iym/0/6nnoaster, 650-W coffee pot, and 600-W microwave. nf 6/ y/ynlmi.c3nnz0 If all were operated 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 light bulbs y4vtnj9j,bgn( cvp** / el*f9uey icq*ou can connect in parallel in a 120-V circuit without tripping a 20-A ci4pj b9ct f*vnu, n/vgyq *ec(l*9jei*rcuit 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 th q0d8t /oh9y$\Omega$ 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 ;fd z , be hm+q(sx6;fx2n6im r+*bxki$\Omega$ 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, ed+0 rg(*va69bkikzz6.0, 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 9.n:sg0u(tp oa5 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 andp k :ruhmx d20r6lqqi 7l6s2l2 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 a(zc6juyx8; f+ od c0upnd 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 resid usocmih24hkm,t zw;9,y6 8hstance 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 5omc*m7l2x( 8x/)z oxns gy3mkyuu*a$R_2$, what is $E$ in Fig. 19-2?


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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the circuit in Fig. 19;8 y,ofxicnocyt w,w dypqburfw0:087r 0u 8 5-3?


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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 /3s5lwi j.1ogm:vckx . 19-4, determine 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 cn 5w./dez n)hrurrent 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 d5.kq/0hiuqi 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 5k e5du6bog3h z8yjq,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 Fk0k)vug*; t lxig. 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 poirexe e61x0fw3 ytz-( sw3 hae+nt D relative 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 battery in Fiuuf -zs2h x:cc027mko g. 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 fro4 /mqo+0daw dcyi6wm jn..0p zm 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 current in /x wfdts t;p41the 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 in the 8nt5rgk:1z69 jmaa ;5 ujyjcgy da,.r3 $\Omega$ 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 currentlaroo3 kljel9p h,,1 gk*r-6f 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 ie kcc8ka6 ge5pf*v5c0in-6pb 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,krnk58 lwwh292 b,0 t vocdqx the 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upper left and- 2w e wo2uiy1h:3kmxa lower left coy2ka2mx:hoe-i1 3wuw rners?

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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 ser-k7w /wlllbr2 ies. The equivalent capacitance of this wkw rb72/l-ll 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 50.0 mF vc5nti 9 )r93dsdnh5k capacitors are connected in series across a 12.0-V batk9 5c)s9 htiv5nddn3 rtery. 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 mFbhcqe/da7ufr )p4 t5w+7 ; mt yosw6f5 capacitors are connected in series across a 12.0-V battery. What is the potential difference across the 10.0-mFwdb7f6em7 ht)/ pqfy+ 5o aur wc4t5s; 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.qj kg.6 r)xf-4ycs.wtz 3vuw capacitor are connected in series across a 3.0-V battery. What is the voltage across the 1.0-mF capacitorq. 3s 4kvrfwy xjcgt-). zu.w6?

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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 capa13nakjc1; fj scitor are connected in series across a 3.0-V battery. What is the voltage a3kj c11njf;s 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 are connected in parallel across a 27(r /fuv z6hf*rd f33e3p;iqulfcf)z4-V battery. How much energy is stored in this combination *pud336vchiuzffqr/)e f7 f ;(zlr 3 fwhen 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 0z+g p17+:s 6dt +cgj vlfwci;0sv pwxs:o)rf mF are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What iswvpltsi1) +:c7jwovzcs6frdg f s+ 0;+ gxp:0 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 8.98s )p+ jwlkthk.h,( abwpps1 00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capl)spbt9kk. asww j,p+ h 8h(1pacitance?

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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 po sgil-dh/ 3r:arallel. The combination is then rlhsdgi :o3/- 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 ar9inoo(58 6k 6pkkhkd oe connected in parallel. The combination is thnhk(5ok9okd 86 6poki en connected in series with a 12.0-V battery and 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 through)8*wvgmohf -m 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 s( 5g dk8 f2lho9ft3kqfvjia:mnl/4;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 k(3kcinm cjsu2je33 y4j 9p6ie+s*r pin series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combinatioyne3ipus9c *p(k jjr3kc62e4 im+ s3jn 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 ptz4wv idk ,vk 57rt/g7l8h)v;hc8cg is then connected in series with a 3)i rdv k5 4tvz78h,l8c7vkgh pg t/wc;.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 resistanc*xcbm htk3y :4e 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 pl f(+lq:c-lt 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 res(nxhz ih2z- lv9wp ormr7y7,c8j)ae;istance 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 resistanch2pbm dk94 ii(f *qcu4e 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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  • :
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    总分:102分 及格:61.2分 时间:不限时
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