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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 betcuvl.04v fop-vk-9u o; cp:gi ween the terminals of a battery, when no current flows t-o0 .gv iu: -4uvcopk;pcvf l9o an external circuit, is referred to as the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminals of a battery, when currj.lkljkuo ,i,uj d5)dna)51 went flows to an ext duj1lkdul) ajk5o,.wj) i, 5nernal circuit, 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 are connected in series to a battjt +g (ota*g5q)vpf3kery

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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 nged du72 pr*:p0a-n4oi;mz zseries,

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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 svti 1e y rah;y/z/(ij/eries to a battery. If the current of 12 A flzeiya v/j ;rth1y/ (/iows 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 batter;mvlutsxb ) 4gs6no(b1z7m s,y. What is the voltage across any one of the resisto74)x nszm(;gm sb1 butslv, 6ors?

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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 scs9rr,k9 v6 ytupplied by the t 6yv9rks9rc, 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 pa+rz w5*,pyihqsnwk-rzz,+h *rallel 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 h slsr07 uhu 8jaa ef+t8na73*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 w-f x1pk)ubf-fa c22 hare connected in parallel to a 12-V battery. What is the)waf-kh f1 fp2 b2-ucx voltage 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 connected in parallel to a battery. If th j6p/r8(np2-zt vkz wyai1du(e current of 12 A flows from the battery, how much current flows tzr y1ipz2/ ( unt68p(vkdjaw-hrough 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 Christma0*mww ssga4g;0 y;kkmraj. 5ciq(p h1s tree lights are connected in parallel. What happens if one lamp burns out? (Assume neg*k.( qsjmr;5;w wag4hi 0m1pyck sa0 gligible 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 vh (q1 /vny*cjmepd4p8h l3e0 poltage source, the power su4ecyde18ph/ p lqp*h(v3 0 njmpplied 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 resistor he2d/xpo+ 7qun8+ig,kwqr ck/i0y fz 7l5r 9es, each of resistance R. The maximum power each can dissipate is P. Two od0q rh 5o y ne,ckwp/2iq++egfrk7ulz 7 /i9x8f 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 junction r+fe-y) etkx8not*)k+ *uhel 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 ruleaaiw wem qv6n3nfo7yeo*4/m q4pp 28(.
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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 )z5a9bk,y tkm 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 rfbi;j0w qf;6 rncec0 4ule 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 valid for the ci1b 6k5gd.4 mvhtig6qf5u:xlf pm.5h(dzi 7l ercuit 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 ident4e)m4,*l n djsgkz4jb wcg gih6.t8 x1ical storage batteries together in series ("+" to "-" to "+"gx,4c*mtjnh1g.b )lwe s 6j i84d4gkz to "-"), 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 ipfi9z r6+v drz2nx b2juo es(-z3x j,/dentical storage batteries together in series ("+" to "-" to "-" to "+"), and place vzjns+6(b z2f2- e/ pdrroj,3xi9uzx 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 zp u 3-vjez:krs)j 3o*wwp,f)parallel, and place them in a circuit, the cok*jpeu)r w:p3 zj-z,o 3f)ws vmbination 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 capa7 uy krhfa+57ecitors are 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 a apmjlo1sw* hgkn/hl zz.7.* /re connected in series, the equivalent capacitance of th/gh1zjsmo lw* . 7p nkz*.alh/e 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 4 pf qby-sat+e *rw7:9wquw;pconnected in series to a battery. If a total charge of w;+ s- *wppt7eyb u9a q:wrq4fQ flows 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 connectedhkue ld7.3n z1k)zs8 vplq3 /x in parallel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parar;ef ubno38v4.od9 rallel, the equivalent capacitance of the combi3nrof db4e u r;a.ov98nation 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 paralyg-g 1- bhm9;yskl+1 -1 7yfpxy:ngdym gd3co lel to a battery. If a total charge of Q flows from the battery, 7dm:9y1cmbgg;sk ynfg1hy1gyo -p lx-+d-y3 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 t.yyf y +4uh xln*adn8-he 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 ar6 sutuv/u*u+ f+1e adre connected in series to an ideal battery of constant terminal vol uu1reu6 t+ds vf+*a/utage. 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 series to an ideal battery of cozf i-l g0xod99,4to :bqf;gp lnstant ter giob0l px-; ,:odq9gfz4 9tflminal 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 are connected in s0;7vmuuvg/3o rtb/yleries to an ideal battery of constant t7/;burlvv0yg3o/ut m erminal 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 shou*2):*s ga +szz9oardc5zi l hlld

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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 ammetev2(usd y47cj)y3dhu lr 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 placing an ammetb9o7nxpjg p ;0er in a circuit consisting of one resistor and one battery. A7gpo;b jx0n p9s 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 shunw+h.v bx-rnf *t 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 voll , /*4ei gbva,2izchsv jid,4tmeter 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 resista6wo - xzzc 7qckf +-km,jr(xy6/ttsa +nce

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading ise93b-+21ah h hayu7n emhvh5t obtained by placing a voltmeter across a resistor. What happens to the total current flowing in the circuit as a result hua -2a nebhty13 hh+ m5vh97eof 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 6tozfx+0zhac *r3)u fis wired in series with an ammeter, and 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 voltmeter reading by the ammete *oztx3hffar 6z+c)u 0r 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 85 w(st ( dsqh sgi,ipnk.wc::is placed in parallel across the resistor only. This network is thens5 :(psh8:(wdni kgwicq, t s. connected to 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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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. n;*n)5xgcwy+aj.nbw: ec j/v0, 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, 128ub3 nylr+4cdlz 4rc0s7e r*p, 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 6.04ypn5eo d6 iup e;bg*) $\Omega$ 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 flows3zdlxpkguwe ;35(h *fn e7gy1 into 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 combination of a vqcn-k1,0j c+ke8d ngpn 8/l f3.0 $\Omega$ 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 combinationojui 5nfsx+rg/+re;7/fs- o;y x1 rob 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* 1 3bzcte *zx40g zcn,5svf9gi*hrny 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 ing + 5ftj b ly,dgu8g7(oqmj9h2to 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 is3hhq;ya3 djk.v4me + p/8m v120-V circuit: 1200-W toaster, 650-W coffeayv/ ;kd38vem4ij . phq+ m3hse pot, and 600-W microwave. 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 you can connect in parall5gt apu 66f4nfpi3h se ::/wpwel in a 12w4anh56 pweuf3p:pft i6g s/:0-V circuit 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 ez ba w wos6m :f*ryh7gc8-y-*$\Omega$ 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 aw616nb e:bbf ex: xvj4nd 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.w9cq;k 8ac*isidq. -h0, 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 5.0y;xsy8 +5/o6p hf;ndzi onn g *g.6fba 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 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 9b b)1*nn l0jzo.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 aakw/i 2p5rmae9:x/f y nd 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 9.0 $\Omega$ resistor?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.0 $\Omega$ resistor is connected in parallel with a 6.0 $\Omega$ resistor. This combination is connected in series with a 4.0 $\Omega$ resistor. The resistors are connected to a 12-volt battery. How much power is dissipated in the 3.0 $\Omega$ resistor?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the cirn u.+nf7 4p 4/v ysa5:lcz5:bkivasiwcuit 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 throu fv;mq7c qpley0+t 1p6gh $R_2$, 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. 19-3? c 9cq:t8zi ib9bz.1)hti9ft k


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 100 \; V$, what is the voltage across $R_5$ in Fig. 19-3?


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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 4.0 \; V$, what is the current through $R_6$ in Fig. 19-3?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the current in qvjntu3u89kn 3 7pg48nj6 :ic fi4p rnthe 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 in t)j/6zqnot ( fthe 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 i0c(wc w)zpen 8m:rqh wl+6i;yn the 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point A relative to point C in Fig. 19 s4 )uygs:* 8wm +wmzvpxb4um0-5?


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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 point5udwq o*b3 ;sowc+) ea 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 xrqhz.9q, tsa2ts x13of point 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 ba 4 oevbfa:*sn4 he5vb*ttery 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 point8 zdlxb* jqp(3j 7vcu; 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 5f8u.y :dgj/3eljy1 r2nd z ycp5 b0ljthe 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 ssaiick 1ro; .h(zoom s2w-.)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 im; vt/ jm4; io2d) ogasi*vml,n the 4 $\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the ;q 78t+szzy:l g- ba)g xoj22vyi8qqw 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 th.im)e sk lkx59 jz,x8se 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 cip3gk cr9g)ne8v1(ktonnecting the upper left and lower left corner1p8rv iek 3kg)g9 tn(cs?

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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. Thfsr)4 5dhh-u fxa9h6t e equivalent capacitance of th9h4rff)6xh st5udh a- is 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 capacitors are connected in series acroz+v1x,y9 tv.nzmy(7bx ioomcl.., udv(b 2nkss a 12.0-V battery. zb y kuy2 7o,v.9mzvoxldxi+tvn (mcbn( .. ,1 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 seriett;t og:oeb+) :of -3gyel*hvqnd n++s across a 12.0-V battery. What is the pot) f+-qto 3lhogyngn d t eev;b+*o+::tential 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 a 3.0-V batterys4r*/ /-vfsqehqqp: k . What is the voltage acrqf4/:s/qehv- r *kp qsoss 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 series across a 3.0-V batte ) ;csxi8sqy n9u,wx ,bu4sq1kry. What is the voltage across the 2.0-mF capacito u1sy,xx i4 s,qn;q)s8w9cubkr?

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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 24-Vg )t ( hsh2ae(h4 )o)m,ianpql battery. How much energy is stored in this mtop gsl42 aea))h) n((,qihhcombination when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, a v0 jy25r43cnylek:in *(o fxknd this pair is then con 0ny5k n4 *jk3 ielxyocfrv(:2nected 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 combinatiot.bu)3w tdbce yg).k 6n is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What ibde yg.6t )uc 3k.)btws 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 6.00n, / u;,xhx zpa7 lns9bw(di4a mF and 8.00 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 charge on the 6.00-mF cap4;( 7x nhspib9 ,,la/udw zaxnacitor?

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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 paralu yh* 0txgf9.pyjd /c(gh/1f( g;qf tulel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. *dyujgu gf /tx1g;/pyhh 9q c (0.f(ft 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 a 50h-vb4/l8(uoxfsl mr8p8+b sh v ,o8ml $k\Omega$ 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 *r-;bdde8yral g 2rn8p/xd9tx6o+ sv 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 connectezst 9tep+1th iv 6/(lojr35efd in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The htrvzfet(5p tji 1o6ls/ 9e3+ 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. It is then connectedag)-gyuo:: 2kq)j qztpfh u2; in series with a 3.0g)q ;pazuo -:)h t:2ygf2 ujqk $M\Omega$ resistor and connected to a 12-V battery. How long after being connected to the battery will the voltage across the capacitor be 9.0 V?

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99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistance of 100vq;3 ,cck dzk;mcob 2 k(yq1f+ $\Omega$ 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 resi9;wx ax/ plltwtfcb+3 t8h7 r0stance 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 inte 9uuj0tumf+3lrnal 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 re+ 6sdpze qv81a5 u9fyvsistance 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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