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习题练习：Physics Unit19: DC Circuits
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 作者: admin  发布日期: 2022-08-17 15:49    总分: 102分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月17日 12:52  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminals of a battery, whe,fc)ow)y, 62 n yn 3yiwpvcwa:xyl9 o8n no current flows to an external c )yw8x3pv9 nfnlawy6c:y)o,iy ,2 ocwircuit, 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 betweenevhsz2:qz bp:+l f *4e the terminals of a battery, when current flows to an externale lq4hbf :*:+zsz2pev 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 resisto i2)urm cwic;-v. y(cwrs are connected in series to a battery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in serie3nu,nc:7p;+5fhnckuzr zjkr j 2t l. 3s,

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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 connecte, qyjg.tld)8sd in series to a battery. If the current of 12 A flows from the battery, how much current flows d,gj.) qltys8through 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 y+gj0p fbz)9wg;-xdu u2 mhci q)vy4 -are connected in series to a 12-V battery. What is the voltage acros- h2)dy9 0 wgjxb+ym;z -v 4uifgquc)ps 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,ogt;y9zzl 1 n3mez,j, xu8ps ( the power supplied by the9 lou,8 tgsnp(zz3,1e xjz m;y 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 paralg;lfx8 n sb9n5 72og w7bn(xsdlel 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 iaabfd 57tyllh*ho5;k70 p x-bn 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 coa l00c8 sm1vcgac+03,0abjbgady 0g p nnected in parallel to a 12-V battery. What is the voltage of any one of the resm3gpa d0bj+bg00 8csy,g1 0a 0ca avclistors?

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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 bhl : c20uqk-hpattery. If the current of 12 A flows from th :qkch2plu-0 he 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 Christmas tree lights are connected in par: ok2iodwi-hq/)o-pd+36i 2fzzy in o f0d.cjallel. What happens if one lamp burns out? (Assume negligible resistance in oiw f kc2o yj2 z+-z i6p)d od-fq3d/.nhi0io: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+qo3z/ .f)cm .pvu hqj voltage source, the power su/.mu+ pz.3qfv) c hjoqpplied 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 identx,2qgxhca5s m ik+a)00dtg (iical resistors, each of resistance R. The maximum power each 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 magxix i 5t2ska+(,0amc )0ghd qximum 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 junc7s, dmpv2 b zo8z,ol v851oc v17qhkthtion 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 ruwp(r d m4 :b(p+ynp,nmle.
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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 is3t ycq(ea;nz *.yn. sx 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 junctionce +:q3 dcxix3 rule 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 fct: 4u6c5 golgor 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 tog(e8h2 aczrx aaa)q*d 2ether in series ("+" to "-" to "+" to "-"), and place them in a circuit*hr2 a28qazcdaa)xe (, 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 stotq2ysqt:f;v h0 ga*7l rah3j( rage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, l(t2qt3h*qga: y;ajfs0 hvr7 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 parallel, and place tv muj1+.j0jo rhem in ao0ru1+ .j mjvj 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 co xk9gxw/xp8*c9lqp0wy3 put:2 t,l)bv dy9mi nnected in series to a battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in series, the equivalent capacidrf5(w6c6s xsl; a3j stance of the combinatirlc3s( s; fwj6 sxa56don 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 in5eaj0fq51 tty series to a battery. If a total charge of Q flows from thft 5e50a qj1yte 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 batt +ls6jj,zosz ,1lh9qm ery,

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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 connec )j tz*iu( we.ri1b9cxted in parallel, the equivalent capacitance of the cob9(1c jerzi xuwt). *imbination 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 aresbj3g8r v,sh9tos1s:vo5r 0p connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each capacitorpo9v5,hb1trsso 8 s: vgrsj3 0 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 ta:yzbvs2ry 7,w 5l*enhe 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 connected in series to an ideal battery of conix nxp+pk6ag(/dxue:4ee-; zstant terminal voltage. At the moment contact is made with the battery, the voltage across the cap- e ;xk a/(e4u:p+zpdex ig6nxacitor 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 ser zsn n41c83jageb8e-wies to an ideal battery of constant terminal voltage. At the moment contact is made with the batt8nne b-4ea cgj318zswery, 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 series to an ideal battery of con43n1tg ffc3hu8vv zu+stant terminal voltage. When this s zu3+t f3h8vc4 gfn1vuystem 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 shouldn t,xzycs7/; rtv2 h3pb4b.sv

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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 the adp2egur 2pc9zy-kgtl x*9 75yqdition 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 9bmodvi7m8+, boc zq5ammeter in a circuit consisting of one resistor and one battery. Aqmv 98dz b+omboc,57is 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 ( 4brk 26um4g7whnsek b0;geaan 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 voltmeter from a galvanometer, one normally :ynh0 j)dmff-dcv+ yz b5 )3wgwould

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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 vol)n4u r;t3djp ntmeter's series resistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a voltmeter acrosoo 8v:cb)m*oe- sz e0i (rfbk8s a resistor. What happens to the total current flowing in the-(vmi 0e: orcboo8k)zs 8*b fe circuit as a result of this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, and a voltmeter is plax,of3/,k5 duokitot (;z 0z xhced 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 theoz(,,d/5tukxko3tz;ihxo f 0 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 wire)km2 :y fp dcm48ruik5d in series with 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 read imky25cd):84 mu rfkping, 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, and 48guqw 37wdgi 0.0 $\Omega$ 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, andwewuc zr7+ty6- s7-ey 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, 1 c,pg3daw w/izi bs4)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 ser),;(axjdq .lkdh3qnik*k9d06 xpxft ies 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 combin kh:h2f0+onl b.byd4pxvy -e) ation 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 bhcy5 z/k2 uk+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 combinati eu byuoda 0t6;v7h/8eon 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 par2htiq6 f1nf3p*9rgzwxg .u 9 iallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V circuit: 120::uaroa8ooa q6y / mc 4vbn.(f0-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the samvofu(b4my ar6:/ 8cooaaq.:n e 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 i :+o6 * rliyqn;grz/ljj8am/ can connect in parallel in a 120-V circuit without tripping a 20-A circuitrjl qi/jz mgol8na +;6ri/:*y 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 1- gk6klz4+5rt4qnfmtsuk)ok x3 5h d e2r7kv$\Omega$ 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 nv. f -4ex;v*nqg p8d.7fwa4pyuesf;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 4.0ewbk; dnd pvaxt5s 7a*.()x(d, 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 9.0mt 7bsto,s8x 0bec4a8d a4t 0hbh.k.m $\Omega$ 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 q5 j8ek61uu gqscci)x6a.f-c $\Omega$ 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 wxcywh(h/ ul t.he33 qvx(-i4and 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 resistei el0qsel1g(*( )u y6yl dj1vance 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+wl- -z:yw jag $R_2$, 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 cirxp.b dktq 38u2cuit 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. 19huq6-bhpa2n6vn7qdwk* g, h ;(r5tq+ av( ggv-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 cf* rsmj;b/faj4p zxvp:m0a 45urrent 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 Fsh7(0ey6 jdj50butv bjr3 ukl l11d3 kig. 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 of point A relative txcz juegcwd* 90 . 9.qlddrm,:o 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 poin h3emrm p2+gypw5/a :it B relative to point C in Fig. 19-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of pmx*qp3hk 0 p)qz+k w4koint 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 Fig. 19-5?t0uqw:hw g:)aa. k2e d


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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 frokoud* .y8lik7m 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 the 7 u km5 n: ,wtk17ui7dln:xoev- ,:pfrt $\Omega$ 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 rerb+j.lt -gie 0pvq+ y2 :eg88 $\Omega$ 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 hz ;k+umm c1r3r+o5bp 3rqgg+in the 4 $\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in tj w6iw.k5c.wfhe 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 iqnhuc 5omv0-a4q;i; jn 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 connectl hpv 5wt++jqs5khtgg)ro( idn(iv+7 e 7pp -(ing the upper left and lower left cornerstd7k(v g ioq+ipsej v r5(h hnpt+w-+ )5lp(7g?

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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 sv9o )exr8z g80d1 d9d sdcbfu*7*iago2 w dqf6eries. The equivalent capacitance of this combinc9asqd8fw )*u9 dodg1e6d d8xivfgbo 0 z7r2*ation 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 capacitol/pd.m)j :ehhrs are connected in series across a 12.0-V battery. How much charg: hjld)e /pm.he 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 seriex2oa;x db qu(bp0g/ z9s across a 12.0-V batz a/gp(dboxu0; 9x2 bqtery. What is the 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 b* u20 j4o6p3dmsgq vyad/l 1bc59d0rwcj 1cacapacitor are connected in series across a 3.0-V battery. What is the voltage across the 1.0docqj yb0 rasgb 1a9v0*5ldjcd u423 /6pm1cw-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 3.0aeimc-y825..lzu mzf z.9cxg-V battery. What is the voltage across u2m . 5gyz-c z eaz.cm.xf8i9lthe 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 i *cfaj: z+l o84tzlz/sn parallel across a 24-V battefzzz t /8sloj lc4+*:ary. How much energy is stored in this combination 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 p f;)fuaqjrn96n4xaq 3arallel, and this pair is then connected in series with a 30-mF capacitorq )q ajna6fx4uf 9;n3r. 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 connectf,b:pp9)fq v hed in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalentq:9ff p h,b)pv 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 parallel. The combinp .-3cqoar/a nation is then connected in serioacr np.q-/3a es 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 7jhjzmgo yj4ax):sa,d 4j /t*in parallel. The combination is then connected in series with z g*j 4/4,axst:ad j7ymjojh)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 t l;ybpje z 161need35jhrough 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 nwuft,: igl36z9x8sato 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 connected in series with a 0.50-mF capacitor. The capacitbvery opahgv4 t)r gy 3oe,r29s48 f7.or is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in vooerv yg42f) 4 rtb7.y89vorhga3 se,pltage 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 connected in series with a i( g/q (ylg5h;kcvwp)jb 5x5m04ra ns3x5;(iak)js5( c5 ggbwvhq0p nmylr/4.0 $M\Omega$ 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 resistancefub t zee lzh4,w-8/l7 of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a coil with a resistt+vrdf)o;skju 7 ne6 ;ance 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 ikrl8pm bv6 yd4j346k(w xcu )unternal 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 resistan7 ,hxrxewj,2c ce 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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