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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 tvqe)q hh6t2w7erminals of a battery, when no current flows to an external circuit, 6th h2 )q7wqevis 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, whem utq662 / nd-xx7gscgn current flows to an external circundtcg 2q mxs6g 6/ux7-it, 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 resi qudhsxo2v,4.*lq zf(4 d f9ghstors 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 z dpthsb 3;up4t /ss1,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 series to a battery. If the curtp a;hk5 g;+hnrent of 12 A flows a5+ tk;gp;hhnfrom 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. 2;dok 16mzash*tb vofx,j1r- What is the voltage across any one of the re;bv2, x sf1dtjo6ka -hm*z1or sistors?

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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 con ;j+f6dsh n4uestant voltage source, the power supplied by the sourcef6n dh4s;ue+ j

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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 247ogjnei;7wptz+e r 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 connectejios5w/1 k-ny3:b fe kd 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 connected in parallel to art 69a9h cw+bl 12-V battery. What is th9ab+9lr6tcw h e 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. 6x(yngy an0o5n;6xs m If the current of 12 A flows from the battery, how much current flows through any one of the resistors? 05mnyxn gao(nyx;66s

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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 c1nd h;s x3d4hhonnected in parallel. What happens if onhds d ;3x41hnhe lamp burns out? (Assume negligible resistance in the wires leading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in parallel: ;boi*xmxy6l to a constant voltage source, the power supplied by tlxm6 ;:*x boiyhe source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identic)md5,t .h qomekcyaf b3k9bmn ; (*g(fal resistors, each of resistance R. The maximum power each bg) oe yqkbm*m n9tf 3(; ckdf,m.(h5acan 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 ju qttdarrx*g p3*xm5 uhv0-6 ;tnction 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 rut+rg7b:abn,f le.
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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 ex(0q( jncw)i-msn dn 4rample 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 ez2ybt :d q:j7 vjl)de3xample 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 circui5/e+ gtdhxf y3t 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 batteri794krf+d njlhes together in series ("+" to "-" to "+" to "-"), fl7d+hr4n j9k and place them in a circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together ys2k1);cl *m/ kqgjqoin series ("+" to "-" to "-" to "+"), and place them in a circuit, the combi*)mqck1y goq/k;2 ljs nation 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 bov1akf)(pxpqq +x6) natteries together in parallel, and place them in a circuit, the combinationp+(xavn q6p))xfkq 1 o 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 capacitor+(52 a o.adu m6/4v niozahrqxs 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 are connecte qz/.;-fdu pid7agcev 5wm60bd in series, the equivalent capacitance of.5/u cad6 -;vibgpfm q70wde z the combination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected indebch81 sqw6l tj )u8:or,(l b series to a battery. If a total charge of Q flows from the battery, how much charge does each , 6s) (tle:bdr18w8lhbujoqc 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 parallallx 5/;zve5b cwhj9hn(q4ev*.rq)q el 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 parallel, th/fws i(-nm*qdl5f a o3e equivalent capacitance of the combination increases ao/sf( nd-53mw*qi fl.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in parallel to a bn6syy m+c)qsbyo)o ;76wx 0xyattery. If a total charge of Q flo;oyyy s6 7+s)mnoqy w6b)x0c xws from the battery, how much charge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the quantity RC joiaezx5hn8;:sz*2b ?

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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 p )+-j+epwnq5)kr mstant terminal voltage. At the moment contact is made with the battery, the voltage across the capaciqw+ipm5jk) n x +p)r-etor 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 arra*zeu *hee/ 4e connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the bat4z/e h*ee ua*rtery, 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 batter47/a jbtys l+vy of constant terminal vo/+4svlyaj bt7 ltage. 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 sho3,kgv:( m ospbuld

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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 addin. sffzqr)74o3u *cce pj f;k)tion 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 ammeter in a cirjpbm9 y+ x/gr-5luwm;cuit consisting of one resistor and one battery. As a resuljl ywr;u+/gmp5x 9- mbt,

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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 km r9ws/4etyx0 nkx.;1c3rrxvte n:) 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 wou ye;(z g3(6ke.psguid *sxs+ qld

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistanhi.f1 1bbk5fn bh8lz)ce of a voltmeter'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 obtaibe1r t5ihbg0 /ned by placing a voltmeter across a resistor. What happens to the total current flowing 1 h/tr0e b5gbiin 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 y dt),kxxqhp3;i-)3bm iix4c 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 h,3;3 cxpk mxiiyiqx) td)4b- 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 1fm7cre(q b lk)r((vc 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 b mer(f1rcv(7l)(qkc 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, 3.0, 5.0, and 4b+e(f4 n;ruzlsv7c8fkm, +lp1 d- mld .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, anrihaubbv0 t3 t(d/ymz5xd110qf o3 z;d 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, j2q6er1nf0 ;6jr0as.+oexak 4cxosw 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 intc2tt6;m jla b9o 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 3.; gr,em(;x5rdgepj12 0ihyci0 $\Omega$ 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 combinatlo-o, fk)yw v ,6v2fzfdb(lo2 ion 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 j,p07lve:jg vd o0 ,+ kxms*nta parallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a paralleolo9s -jo 9umeo+q:ef3 ;l,x7yze zt1l 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 my z)5puytw u rc4d9 )ap1.hx/connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at rux5 a)1 typw c/mpuh )yd.49zthe 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 connnczi +*.ae 1d*wz)o myect in parallel in a 120-V circuit withoz aczoe) +iy **.mnw1dut 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 b3 -i )kz9- m somfr;m33niunx$\Omega$ 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 3 psm-0+hll0*uux mr(p 0 $\Omega$ 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, 6.0, and 10.0kbxir y95j9+m $\Omega$ 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 9.0 7g:+1ria bwwh $\Omega$ 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.kx/6pc2h urxn2w)p, lehm p 5 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 and h6g 8wkg/v ;qnroo*9 ov3gc3u 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 93e 45jerobtrg qvdk,o94. tucircuit 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 througf is+zau(83d yh $R_2$, 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 th;bh2zq0 cetuj9:.k l xe circuit in Fig. 19-3?


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


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


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the current in the 1h;kh2qcjq:mfn z() nypi6(bs)y /s+ j $\Omega$ 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 currf5orw,srqh 4 yc:k-3 sent 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 Fiuw5ylp 43 8oung. 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 19/z4t3rqnukcp 5gfa 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 relatinh8:m pfi1 j;:. t8zvlrqhu n9tbh n03ve 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 point D relative to point ld.mkzn(8uqn3pgrd , b z+d4; 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 ii t lv(hja.g; 2y45lr8wku1 vjesde*1n 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 point B in4 hrruzg481trd/gc8p0 lyp7d 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 ; fipte;gx n89o9rdn)5k8jg fin the 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 if)c 291 0o,xpw kvlgjkn the 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 in the* t2we82jx 7 l,xbs-ac qgqwa8r bwc+5 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 6*kvt,(nwtmmthe 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 1vpe f;4:vkv v28 $\Omega$ 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 wire1j) qtu,dj 5cqx*bz8 t connecting the upper left and lower left corne *qjubdt1 jztcqx,)8 5rs?

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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.l, s 3c6i.q)2yzuw r8djncy5c The equivalent capacitance of thn d 5 jwz6lc cs2y.,3c8q)ryiuis 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...sop2c( wdr .n8l7t0 zum jqn0 mF capacitors are connected in series across a 12.0-V battery. How much charge is storelusq .j(n wp m0tc 2n.r8o.d7zd in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series across a f2oqoos :1h;s12.0-V battery. What is t ;q:o1sf2hs oohe 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 capacitor are cvu 1w p6s7sb-)kb(u c7ws)gw zonnected in series across a 3.0-V battery. What is the voltage across the 1.0-mF capacito)s -k7vbzgw(1 7pusb 6w)wscu r?

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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 capa m6vjc;14d 9 rzrz8qymcitor are connected in series across a 3.0-V battery. What is tdc16j 4q;mvy r8rzz9mhe voltage across the 2.0-mF capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors are connected q8 sown5by3 b:in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are b 8ws3yb:oq5nfully 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 u t-:1pw bgz)is8,irz parallel, and this pair is then connected in series wis rput izb8wg-)1,:i zth 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 connect9ssv6z ohlrkjgs1 / glru+070ed in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equiva klvj 9sug7+0 r6 1og/rls0hszlent 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 combfmh+ug8 , m76 c irk;cbjzl*n+ination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor.k nh,++7lm86 jgz*bmfuc i ;cr 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(drjjp c0j5 tv wbpx6anz v;6o4bdun r-4.2h 7 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.r(jndd-c4n b h04wjpzpr u66v;5 vb x 2aojt.7 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 char+cawrg-/+ky tvk9h6 mx mxj-onm8-9 mged through a 50 $k\Omega$ resistor. How long does it take for the capacitor to reach 90% of full charge?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged to 12 4 wbao) k,e(hk*;ysn/8uwgk x 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 connectedgm omznx7qq 4::1ud +b in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. :ub1xn+ m oqdgmqz:7 4 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 chargqo1zwe2d 19m-; otxpsed to 6.0-V. It is then connected in series with a 3.-oo;md19sp1et wqzx 2 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 resistance-la/*2 rhgwt r,w0 xew 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 ccgm )2wapi 2p;oil 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 rw ba0i8.8y ;.dbr o9;pjxqgmzesistance 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 40ih)*hooiktb (sy-yk9)ks .0wx 9gtt ;.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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