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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: 游客未登录  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, when no1 extz1 :c8,uyla:1ghpc2 fgo current flows to ccy21ao pxe1,:utl ghg 1f8z: 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 s idd//g ch. ypotx4.64od- lpbetween the terminals of a battery, when current flows to an external gd4y/4- ol dxhtosip ..6cd/p 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 +g07 iuj6nkcn,- sqdeare 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 0o4wd9 qa+ * (oihiaj8wh .xdiseries,

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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 cuts7bfz uf + lr+6v*c5jrrent of 12 A flows from the battery, how much current flows through any one of the resij+ fsrb6t c57f*l +uzvstors?

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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. What is tcfj-4i) tlyc pp c95 *kp.ha8ahe vt )ijy.5*8hl caf cppacp4-9koltage across any one of the resistors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a constant voltage source, the po8e-7 nz**av5 dnunp v -pidsxda* :ge+wer suppliedea vn5pd as:un e*d vi --x*n+z*87pgd 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 paragaq6dsg: 96e/7pnrm hllel 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 conn hebzg f3)k98hected 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 a 12-V batteryy1iob md, x( qxy96-kdlhh :b*. What is the voltage o*,q6iblkh x o:1bh9x ( md-yydf 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 conwz +)j;lw7fignected in parallel to a battery. If the current of 12 A flows from the battery, how much current7lfw; w)i+z gj 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 conn9 - sxxnnk5rf; *i8* d-srom6 c eq7ehi4ntj;uected in parallel. What happenin; r;4jsc o6m*ei-durnxn-et *sxq95hk8f 7 s if one 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 to a constant voltage source, the powf oszp h*(e 2xojc7u..er supppjf oecoxs. u2.(7h*z lied 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 maxim)yz2 o- x/ctggnrjo k0/go ),dum power each can dissipate is Pd/roz)/ng0yjo2 coxk ,gg-)t . 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 junction r bs a-;tj;a)wtule.
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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 a5 -iafvrief7+d(t**hfc fpy2)ncm6 rule.
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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 p* 1h 0)pwlu; boxmn,alv),la is an example of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction rule is an example ofnjyjik 5l-rl,v-aw 2.

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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 theat6 . :o hvwh.fqu2gf 9c(kza).eo z;u 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 th9-(j t9 rv,0nrub4 bl y0sj8lowl1us ogether in series ("+" to "-" to "+" to "-"), ,8 (vs9us 4o0 ljy-0lburnh1 trjb9 wland 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 in sercgf w( 1 o)kk/1/a wwwrg*ax4ries ("+" to "-" to "-" to "+"), and place them ing(arkw1kww1/a*cwr x/gfo ) 4 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 togetqa 0*to.0:zj qf. iemfher in parallel, and place them in a circuit, the combination will projte i0fmo:z*0 f.aq.qvide

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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 conneis+ex8r(o ) 3pnvt7mvcted 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 capacita0+; / asi n;xm0svn(zoid q9uynce of the(;+9 i0von xaqid;znu0/ymss 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 capacitorsumf9+g8c f g a2yyb 6.kz-s7vj are connected in series to a battery. If a total charge of Q flows from the battery, how much charge does each capacyj 9 f uk6mzgfg2c+7 .bsyva-8itor 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 parall +l spf+x jab/m4v6mb-c,hqo9 n7p3ivel 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 capacitor (gf3eb8t-j:i8 1h vo8jqiu yrs are connected in parallel, the equivalent capacitance of the combination increajgh8bvifio8 r(u3qety-1 8: j ses.

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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 ptwx b::zmf69j1 6p pqharallel to a battery. If a total charge ojqhmpf 6p z 9::bt61wxf Q flows 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 Ru9m/;q kskn:q C?

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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 const v w7(sb9l5/lmt2b pp oh. 9lpi)ei0.-trvbfdant terminal voltage. At the moment contact is made with the batt. fbtp 9(eib2w l li 0)9pp rtovl.m7/5d-vbshery, 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 serirmo ( hs9asa*0es to an ideal battery of constant terminal voltage. At the moment contact is made with the bs90a (msharo *attery, 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 batc1tnj(d v 6yj72xw 1ottery of constant terminal voltage. When this system reaches its steady-state1ct7d6ow2xj vj(1nty, 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 shoy:.xvsg2rvam2z5 dx:-vc0ki uld

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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+w l0,9wdb5o (xx8crvy fob*k 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 ammeter i igmai k:8;bh,n a circuit consisting of a mk:;ig8h b,ione resistor and one battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammeter's shunt res s;rvk v-yya6twtpvcgk5, (c)19we(to m r r04istance

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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 g /ye/p3f 45;in(f 1u )zjm wxapejm*waalvanometer, 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 resistanh/oylt/bjk r j47v5/kce 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 obtained by placing a voltmeter across a resistor.rw sczjmb11k:)81ts j hm i(1f What happens to the total current flowing in the circuit as a resulthfjr8mkjm:(z wc1)1b11 tsis 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 voltxkq.pw*u7/ cmmeter 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 wx. qku7cmp/* 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 wir *8orwcfx7c4red 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 ammete8c4rr ofx7*cw r 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, 5wfeul37(w-sy 7ink.i: o9kas.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, 12, and 6.0 ki 4uh.1 igu73 imojw 71b8mak$\Omega$ 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 6.1 lmb-.jm1c 4fck() zywvb3wu0 $\Omega$ 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 series c 5,h9uv2 g8my:a0) wvftdky csombination 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 seriesvs /dfzkd6w *yr8v ju):z8cb 8 combination 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 combinatip z(gajo)zb0 pdc3/0nix:p i;on of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination of a 5iatcnfw3e b 7;kl)i/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 .qv:al3q/x oia 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 120-V circuit: 12 3la+u6n pup1i00-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they drp3ui+al pnu16aw?

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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 numberrl g kd+m1xk, asv6q.y9 h5rj; of 100-W light bulbs you can connect in parallel in a 120-V xmg;r5+9rq6 k, 1vdljhks ay.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 2.0p, c8nfk(2 fhw $\Omega$ 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 agjj o./t3n;dujks7 5e tj(9 nxnd 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 4.0, 6.0, and 10.0cu 4tzxvmp 6wcqx1nag0015h etb.k 87 $\Omega$ 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.p * andm;5ca3aq1fb9j0 $\Omega$ 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 bw hq,7 6- -*csg9xlfqzat0yb wuotj ci8v-,+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 9i*.eaer luhweu7e/ /;ufvl+:.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 circuit in 7o6cm1uvf2 cw0h ir6xf s.q p.jss;z 5Fig. 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; u-k ydx(ugw ecmpwm9 :.h.y7 $R_2$, 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 ta 0oi ox7geax.ou25fn8 vp2;dhe 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 i:,)m*h o)b 4om calxv s2tw-rfn 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 currenb c4 lo: p/wsf;kjl57cif 9/wqt in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-3jflnvb u71qz i)ge.5 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 to point Cxew v 0fy, g,r*1bf,hy/uss)b in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to point p,f/d- 6dn sa4 zv1dbwledy,)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 C in Fig. a*zgr0sf3l( y66azc,r 2x nko19-5?


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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. j0, 8z/o v3l ;,owbvzzjggi. e19-5?


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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 e-ly ( n wvgcn5c;5:nw8 b;ntipoint 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 bven 7rh9f0t 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 t 0s,rgl .ksiwt0z;3jant,j. 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 currendcqmx9*, xzp/ ngki; 2frzl81t 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 the (:lkpr/ 5 k6kt5 rxagi12 $\Omega$ 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/o(oo pbawd e 39k;sdb2n-v ccu1 s(oxgnj0;5e 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 l w:limqs:m8j7zh 9r+qv k5:.n oq4q zhower left corne+h:w9:.qm qq5zkij ohslnqm4 8v:7rzrs?

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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. The equivalent capa6ybesc2pqe/ . e 19d14etc wlqcitance of this e2cq 1e4ey/ ldst6 9ep1q wcb.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 aa/zpg fz,l6a /x02uiikwt.8 mF capacitors are connected in series across a 12.0-V battery. How much ckza z2p/ag8/6ti.,ua0w fl ixharge 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 conrli14(kd ood j/p+gl.;.v bytnected in series across a 12.0-V battery. W /plkl(1;o+ydrjb .4ogvit .d hat 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 capacitor ar)/vayv l*1ihj 6)i(pl nen j5ge connected in series across a 3.0-V battery. What is the voltage across the 1.0-mF cvvi1jin5a(6jh*/ln) )ye g p lapacitor?

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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 sinsxw -amj,)0eries across a 3.0-V battery. What is the imwx-0s, an)j 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 capacitorsc/ 3fg28o0d,rt fzial are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are ful/ fdg t8a023firz,olcly 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, and this paw4af3t j; 7wh;u,zmj 9 uzni6d/x/kzpir is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrau;uj,mkf9iwnzp z t467 a/jz /;dwh 3xngement?

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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 combinatiu9zq*f qxj0 l5fej1 i3on is then connected in series with a 12.0-V battery and a 14.0-i z59ejq j3*lu0ffq1 xmF 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. 4poxa.(*c;j5 m z(csshfb p6jip,2ad The combination is then connected in series with a 12.0-V battery co;i5cp2 fh((m *sxp 6.ps,b ja ja4dzand 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 mriz:qdg7mt a26s1wzj -v 0d x (n0cl*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 voltage acros7 grd(0mmqw-d jl x0ni tv z2c:*z61ass 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 thro9rlhn ur .i/pe+7gcj5, mah mwd+u9e(ugh a 50 $k\Omega$ resistor. How long does it take for the capacitor to reach 90% of full charge?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged to 12 V and then disch 0s7 sw8l 6w7oky1f plz gw:l76ffa8uwarged 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-mta-gw3a l 9hkkyf42 (sF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the changehsg w2ka-3(f9y lt a4k 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 in series withv ye6u-2y p1ki a 3.0 u21ek6-vypi y$M\Omega$ 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 iwaxhphj,kv3k; 5+3 c rk w61 +zu2xxwlnternal 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 c5 muy n5ldwev1b7 7gc5oil 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 resistan5s5 isph jzy v63mktmzy)34:dce 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 resistanc5ix6pe d6;kc 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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  • 姓名:游客(未登录)
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    总分:102分 及格:61.2分 时间:不限时
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