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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 bmmmxvp x977 jawh d4xzp.ii( zxw1/.7/:a fdqattery, when no current flows to an external circuzi 1q.7. p (47xpfi/adh v/jx9xxwmam:z d 7wmit, 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 batte 9 +kfp17pfh 5lbspb)try, when current flows to an externalt 9+lhkbp5f7p s)1pbf circuit, is referred to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected i xfms*0ab- dubg1oc6 8n 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 cz;o(pq,)niuo t(ke/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 ap 0y,s wmzy/+rre connected in series to a battery. If the current of 12 A flows from the batr,0sp z ym+wy/tery, 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 resistor*s cr7hrk6.*wlvlh,d8i fe.. ybax 0ns are connected in series to a 12-V battery. What is the voltage across any one of the resrr. v8hfwhkl d0n,*i7e.lx.c6 b y*saistors?

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

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a constant voltage source, the power su0r.pqmq:8 +z5wkeo 6umhvqru g :73bmpplied by the: vm 7pqg3ez8uqb:rm h0+ 5.okurwm6 q 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 battzgmt(9 4x 4ncaery,

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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 certaint 7,n 4 sh)4ush;ekjnm 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 pa37vljm vb s)/y fz;y1oiqvm /pg 2)rh+rallel to a 12-V battery. What is the voltage of aq7 +bj/vo1gm zy3;hyf/ )pvlsv 2mri)ny 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. ww1usg4,-j:y mfkmkw ;a8a 4c btqv) 3If the current of 12 A flows from the battery, how much current flows through anya;q,s43 8-vkm fymk 1wc)a wb4:tjguw 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 lightz 4 kxjjwwb (tech)u4)p-:gb;s are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the lampsg4eu kp: bjwc tz)(4wxhb -;)j.)

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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(iv cbeq-zdd)i/y5r b*d+al( parallel to a constant voltage source, the power supplierb*+a)(bi-iy(5lz qv ecd / ddd 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 res7bz mw , eli,-e7knvtl/q-p9jistance 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 bejpw 7m/, -ke-,9 7itvnzl qlthese 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 ruleli+ +2si4 hfl 0k+dvhl3pe9y l.
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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 rule.,tsfqe/c +(eo
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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 example ok qj+ :+k1fbokf

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction rulqmjk 5o.sj cjsv(6)h0 e 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 valid8enl *9zu-akghrz6l wr5z 8jc+ h.dk1 for 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 storagelhgdbe7fz e w9p4l,o 7ev) 95z batteries together in series ("+" to "-" to "+" to "-")d5p9)eveo97w beh74g,fl z zl, 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 identic76w2:c- j:jib 0i:ptxkvxg q(7udvt tal storage batteries together in series ("+" to "-" to "-" to "+"):x ukx06iw t:v-7i ptgj7:dtqb v2(cj, 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 batteries togethey:4dliej j s5+r in parallel, and place them in a circuit, the combination wi edi45jj+:syl ll 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 series to a bat3 +czx : jy5e6bghr1o;z nxxl0tery,

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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 capacitor;78f77z ryle)uxpq d vs are connected in series, the equivalent capacitance of the combin7dxq7z78) l rvypef ;uation 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 a.ja*1cg.raf vre connected in series to a battery. If a total charge of Q flows from the battery, how much charge does each ca. a.cgjf1rv* apacitor 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 inh ) nb:/t5bvin parallel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel, the equivalent2gcii,ksu: .r capacitance rk.u2 c :i,gisof the combination increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capa xsa8 sy2d-ew+citors are connected in parallel to a battery. If a total charge oyes x+a2s-wd8 f 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 quancbg k),c/bq+avgt3 0vtity 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 j ,q3 2mv+ztrw .bib6yconstant terminal voltagz 6 3+vm.tbjwri2q,bye. At the moment contact is made with the battery, the voltage across the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in seft6rnx y+ *wl(mgo(a0 ries to an ideal battery of constant terminal vn+(*lor(06agymxf twoltage. At the moment contact is made with the battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an )a chvve -aai566ehh/ ideal battery of constant terminal voltage. When this sy5 ) ha/ae6cev6hah iv-stem 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 sho,nwsqkr1 k b) fh5,iu5upts g85x 7mj*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 the addds4q8jnjf iv5 .0o 75vwbg j6vition 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 aes ;4vmz;k.;r focjc0qdntg9 3r .k3 a circuit consisting of one resistor and one battery. As a;r0zdko;g rcmta;k3. je3sqn v9cf. 4 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-ys lzfr3/0:s+vvqv h 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 galkc4 k5ebk;-smtpt3 8xvanometer, 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 voltm msl-a +,wqhj-bf5lq(aj 92xxeter'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 voltmetejdv:d u +-tjo8r across a resistor. What happens to the total current flowintjduv -do:8+ jg 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 ammeter, pracs63;(hk rd m,l1m-uh5 chsbh+l * 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 thep1 as(h*umr-kr d;hhlhm5 + lc,b6c3s 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 series with an ammeter, k)/aj nc.zk 3band 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 thb/. z3)nkkcaje 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)j g)-djb yao0 ijw(*z.0, 5.0, and 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12c8bj dm lz3qcuxf61::0zh 4*muo8vyj , and 6.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, andl oel2/8nn9g ahtuz4t, 7 aqa4 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 flowsd t5m hscm12x y8sg.*b into a series combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combination of a 3.0: 5 kts3a0yziv $\Omega$ 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 parr ayp0s/i8e, xallel 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 cmq43 e4lng ,roombination 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 parallel combination of a z ) n3h 9t1ij-, bqpagr7r:2axtu +nlcl gv8k-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 toxo/zecfa-+0fq k 5e8q a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what to xe0 +8 fazk/eco5q-qftal current would they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum number of 100-W light bulbs you can connect in parallegipl ,.sq-wt:./l pg+ ea+ma rl in a 120-V circuit without tripping a 20-A circ.rpql/ a: lg,g. +sw imea+-tpuit 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 2.0,6 a(h1im8rro 5sjl /hqr 6b ax5uoeh- $\Omega$ 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 34um) cll x7nkq47hc f*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 i*a r- ;vhduo2io) tq910.0 $\Omega$ 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 g s:l+q;7oen 1ckokqrm; h x/:and 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 4.0 $\Omega$ resistor?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 a r-r7xs lboh6m: fc02ind 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 qjy7lgk5/uh4 s4d4hl 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 circuit in Fig. 19-21g -e98diurmufr1 5mr?


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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 ,2 +zsy9*pdip jo)h l6thy6qn$R_2$, what is $E$ in Fig. 19-2?


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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the circuit in Fig. 19-3? 1c1bpmq5;z*z9locx s


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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, detep7j 5 ( ;pk,1b zjkknv hb:hpraumy03+rmine 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, determin-nm(8 cow: 9awy 1ql zq5 pfjhhz-wdfd q4628je the current 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. 19-4, determine the current 69p sr r9y)- ()y-zilosiqwf sin the 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point A relative to point C in Fig. 19-5/ 6t;fcxcy/qta-8f lsn 8bts4?


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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 t bx9qx0.r3 tr trv3:amo 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 C n e1 lwgi+ab0*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 batt u a9rx*vz2z ef(/ykx6ery in Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A 7 iakung*d+8ao (g,sdto 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 t7e/ie t laz5i:he 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 currenhm co7c7.h4gs5g wfh/t in 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 currentm b.i aapf +mz4c1*q1uo(zpp4 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 w/c0+ahe i2ksthe 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 thk39-tispxce/ e 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 solx7f:-o u p:ubjit+o l)id wire connecting the upper left and lower left cornersjbxi+)f-ulo 7p ::tuo?

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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 art4(fyza+0i z pi*n+ege connected in series. The equivalent capacitance of this c i+zt4yen* pz0gfi+ a(ombination 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 capa ,ky0kd4vdlhp9 u20cuus 5u)xcitors are connected in series across a 12.0-V battery. How much charge is stored in the 5.00-mF cacuxdu54)pyl9k,du 0 k vh0su2pacitor?

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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 mFo y 8:spt,rft+fxo8* r capacitors are connected in series across a 12.0-V battery. Wh xo t:8,of*tsyrfp r+8at 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 capacitor26nz5)j, )h nf7ycuekbkdt i rc92wl) are connected in series across a 3.0-V battery. What is the voy k, eirkj)n 5)7lwtcf ) 622chu9bzdnltage across the 1.0-mF capacitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF cz akbn5 oo njh ssuw.0*1zzua*6ds+28apacitor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF capacit 6us wa0 kjzhzu25*oazb.n8 *o+d1sn sor?

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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 v4d/8,nugud rz)8nc7da3 se kbp 5+t dmF capacitors are connected in parallel across a 24-V battery. How much energydu8tanp rv d+sd k/,ne 7zu5b)84 g3cd 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 parallel, and thispt 23.r3nl8fkwvt z)m pair is then connected in series with a 30-mF capacitor. What is the equivalz m)k 2ttnwf 3vp83lr.ent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected -3yj2z;c:hwxkg,u rbf)c 4e iin parallel. The combination is then connected in series with a 12.0-yh)k3z:,42rcf -gj uic ;bxwe 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 i :b,)eg. ghah,-j5ocggqptn +n parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-+:ehq gj,ga5 )tngpogh-,bc .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 parallel4xgoy1c;gab;f, 9n jt. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacit ;;4jtaxf,9ogygb1 nc or. 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 snff1emtc62 9o n f8-:q 2eyr uj(d7kucharged 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 cha+n2rw2 1 i rri/rq.8wo*jojjarged to 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 capacitor9f,;oy/ovys h9gk-h3 mzd ( rh. The capacitor is initially uncharged. The RC combination is charged by g(oyho sh9kf3v z 9,y;drm/-ha 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 ivd p/s757yb7dt 3b1 pupap ut7s then connected in series with a 3tp7 y77 ddvstp5ap /buu 13pb7.0 $M\Omega$ 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 (.e a *,e;d-dtid zqijof 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 alyfj/ g )k/5hx coil 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 resistance of 1:g v9cx.y -bqz00 $\Omega$ 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 cb4 4fsy1yvxsu+yrf j0h2q477ju j+ vresistance 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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