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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 betwegi-jo pgk 6p6z-99ipv en the terminals of a battery, when no current flows tkiv-p 6 g9g-p69 zpjoio 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 batu/hmb0q7 tv2ypn 5 z(ttery, when current flows to an external circuit, i ytzm7 n pu0tq5/v2(bhs 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 seriesphw)e w2s):tbeti1(dy :gwc. 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 seriei -pooe3e )y4hs,

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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 series to a bate2wz warx97w :4dva1ttery. If the current of 12 A flows froewd1 t9 waw7z2ar4 :vxm 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 battery. Whlxl) 1imkx1k 9at is the voltage acrok9ix1 klm x)1lss 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 3axlpt 4;mlh:.g3tm-y tw j*u a constant voltage source, the power supp4gwjxtpl:mt-h m3a;u ylt3*. lied 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 ba/8zhdn1g 2pytttery,

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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 certain )cfx n emnu9(avh;;oab35s 18ntv zu;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 i-ar 7-nvfu nz;rhfk 0/1z-no12-V battery. What is the voltage 1--n0 ofnaznrk7f r ; iu-/zvhof 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 zt (uou6gim.9battery. If the current of 12 A flowsiu (ogzu9 6.tm 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 Christmasgk d6slbsdn()(ujm86 uqx4 xj0mw/ 6o +b7bj z tree lights are connected in parallel. What happens if one lamp burns ou47nbx((jw/o 6dmjbk60sx +u bsm6u8jq )zd lgt? (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 parallelr x:nfxg.+8 5m.dknyxuj,- kk to a constant voltage source, the power suppl.g-8yfk mur .d5:kx,xk+ nnxjied by the source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each of resistance R. The maximum power eacwi e,+qquwv9k;fm h;z:* xc *kh can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallel with these twoqu*xmwk*+ k cw9hf zv qi:,e;;. 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 junctionjxoi;upsb- ni 6zoo8r)3p 3yeqph4.; 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 rulpsa6v ; p:m9kiz5ug7 lxxm4h0xa7v5y e.
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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 e 4m lgfl vru5+t5emt/*xample 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 examp0swp)uo jzc (q(zkb14le 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 thjr( 6fhz)g /rbe 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 idenc u:d+ug4f4oftical storage batteries together in series ("+" to "-" to "+" to "-"), and p: 4odu+ 4uffcglace 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 toge;q2- )h(tejqag0 ruo nther in series ("+" to "-" to "-" to "+")uaor ne2 qtqg )(-0;hj, 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 battew,kla 7ie7s, yries together in parallel, and place them in a circuit, the combinat 7kyea7s,i l,wion 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 serk6grkp1 -mpvmq6 cs)zs h8,6fies 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 caf1ykus(n:w)0 hcmo9dz22qe : u7zo jfpacitance of the combination zzeq dyocu:n9ff:1 o2 )2h07(m wusj kincreases.

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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 to a battery. If a total cucv h,q 9 *+)c,soarnbharcac+q), vs9r,on hbu*ge of Q 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 connected in parallel to vwb(a-7v;tkb+hbmf5 zzn 2 2v 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 parallel, thei)*md* k0j fb(on8*lel5bde:* nfrv u equivalent capacitance of the combinatio:bmf8 krb*ineo*lj(l* d ue 0d)*5 nvfn 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 ary6e 7e+lpacc1x ngd6 +e connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each +1ce nxcl6e+pgyd67acapacitor 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 quantitzhs x f+f,*nq 8zzk58yy us74dy 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 seag(j2xwn4p/f no*tl ty5qr76 ries to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltagep*/t j6a xf5 yw2otn(7gl4qrn 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 dec5r7qhaao5z * q33tog-; qxideal battery of constant terminal voltage. At the moment contact is made with the battery, the ghx-d5qat5 73cro; aqeq3*ozvoltage 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 batl *excm 8ay wov50)ed+tery of constant terminal voltage. doylx5)e8 emw *cv0 a+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 should i:op-nj9: /s(qlxl vo

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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-mfvbm*ttq mr*3 b6 eg 4pg/)c 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 placinn;yl w4*t ov,j+ f+cwvg an ammeter in a circuit consisting of one resistor and one batvvwj+w co*t,l fy; +n4tery. 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 resistd6i h*rmq, z)r1b;xz 2)w ogapance 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 voltmeu5w-kx d;oq5 nhn p6;bter 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 serif uf7y arn27m;89*-psi;jcz l* p o)cfk x0hkues 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 v aht4h yi7z-z.oltmeter across a resistor. What happa.z-ih h47 ytzens 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 in series with an ammeteru tbn k5e1t0oekkp lb7 t.-)5n, 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 ammeter readiu -k)lo1 .tk 5bnkp5e0n7 ettbng, 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(g+ dk (dhw0lp) v,7fl xapst2, 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 th(2k) fg0(p+h,dx wlt 7pvdls ae 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, 3.0, 5.0, and 4.0-vciww ud0rbi+ ;m v-4 $\Omega$ 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, andzw1ao 2 n kkwp :ho,2)8wfbs5v 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, a3tiwyng(+g l )rtp 68 trqg7gkz8oo0 -nd 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 0r.oga 9tyrw5wv* 8o x1 :p3bcukd /hta 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 3.wygp /:x (;teo0 $\Omega$ 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 combination of;eatk(4,hv0,ktibfr j7 . alh 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 oab8v-t-/ff8x qr;g c ef 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 a 4.0wa0u8q8 ed6yck19v7zjgedm: $\Omega$, 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- .v4x8j/b/jadc/sd v wW toaster, 650-W coffee pot, and 600-W microwave. If all were opevj/d acx8b/.s/4 jd vwrated 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 connech tr3m e;dm:5 v.rvgh2 jv,gl;t in parallel in a 120-V circuit without tripping a 20-A circuitvg;v2,rrm ljm vh h3;:d.tg5e 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 2.0uw- -+bb.tu sw )5bjxc/pf h cm:8em+xm1f/kv $\Omega$ 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 30sv1a10yj xfd . xz-ptztlpei)74e 0j1 $\Omega$ 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, 6.08bzo 4zhr(r c., 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 wb*5(ep/j2w83p0 cxc)wdqqf:azlg c9.0 $\Omega$ 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 9at+3kgu -bpc,-ofa)i r a )ng9kq/t s$\Omega$ 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 and 9ng : x qtg:fet9n.e.h0.0 $\Omega$ 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 3 9+ xf ow70in.+nji-:vcho yf vyzfi-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 throu*1nux.u09s1nbsi u zf*st ca uv*,p8egh $R_2$, 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 Fpj*hec 7pp;b4z6h7ql2yh -azk tmqp ;) o94ouig. 19-3?


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


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


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine tpza t(.o- *mex5gh j(fhe 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 in thj8*: hhs 7xewbe 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, det3.eqf ugib25 9xc.wx iermine 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 potentiaq4xm:x fp))o wl of 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 j o.oap8 qv9o8z2 ,vjdB 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 ogcm 1kgt/,4 t 1pktxyq68q,raf 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 battery in Fig. 19-5 r;g+gb(+gtpa )c.rs*fpz yo5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A to point B in Fig. 19wf 4n:mau0,0,n-xg geqrg;uv -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 thbid-lnow g)/qb 2d-;ce 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 8iokdsa7z s8r9cpzz48y8j- m 5 $\Omega$ 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 zn2f5 gg7 p 5.7, u*ykoasxkqdthe 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 theg t96uskd (y-c 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 the fey)9un4nrsp lo vu d1//v8w *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 left cov vpjf 9; lwsaoqj+:3,a4vz y;rv:9a p vj;s+3a,olvq yw4f ;zjners?

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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 ser3k- o i1fz4 .hk* )ubbyz0vrtpies. The equivalent capacitance of th bk)ifzbuy43ht- 0.1p zvok *ris 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 across a 12.0,y+ gm0ks: mfe-V battery. How much charge is stored in the 5.00-mF capacito gse+m k,0:myfr?

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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 :yjg82he +kvs across a 12.0-V battery. What is the potential differe+jhvkes8: yg 2nce 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 psij pc868l0z30kk 8j 0r ljsjbattery. What is the voltage across the 1.0-mF capaci8j0p r i3jkl cs8zs0j8pkj6l0tor?

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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 area4ted6v xw6 aost+*(b connected in series across a 3.0-V battery. What is the voltage across the 2.6 e6ttoa +xbw da(4sv*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 3.0hr yz nk2.gpflt81y 6t2:t*rr mF capacitors are connected in parallel across a 24-V battery. How much energy is stored in this combination when the c8gkrh2y r1 l.zy:t2f*6 ttn prapacitors 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 arev7v o,.l7 hskm2uvic. connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of this a hmvc oluvk.i772v.s, rrangement?

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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. T7 zaok,o)tv-4eb e nqzj96f )mhe combination is then6af b k,meznoqo )tv -z9e47j) connected 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 parallel. The cofk5gog ar,7-oelwb g 511i2nembination is then connected in series with a 12.0-V battery and a 14.owgb-r1o5n ek e ig2,5lf 7ag10-mF capacitor. What is the charge on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. T;8vwu fqq41 gmli9 yz5he combination is then connected i5y4 uz fq8qvmiw 9gl1;n 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 charao nci2j;, hsooz :2-sged 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 toisy:e5g5 h8wap 3z 3qs 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 se+(ugf 37lt6ebl4gbtt z/vv. r ries with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged b(lvtbe+/t36 .g lz7tfg rv4buy 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 connected inxhm)i0sbu/ c gy tl1); series with a 3.0 uyshgb0m1i)l/ xct); $M\Omega$ 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 a6. p8hd/,*gj8h elek zful3 enn internal 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 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 resistanceytf v) v-h( xe7xm69ce 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 iyy pe5mby t9/,n8zqs3/afzux4 0h wm4nternal 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 resistance of 40.0 2zs z6;n7ftsds hbay4zjla/7 m0w(e2 $\Omega$ 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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