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习题练习：.Resistor.
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 作者: admin  发布日期: 2024-08-22 15:34    总分: 50分  得分: _____________

答题人: 游客未登录  开始时间: 24年08月22日 11:12  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  
  16.09: In the circuit shown, an electric current exists in the metal resistor co5n6- 1 (khd prrfja0ymnnected to the battery. Which one of the following choices best describes the direction of electron flow through the resistor and the direction of the elec-a1r ynphj(06m r d5kftric field through the interior of the resistor?


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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.06: When any four resistors are connected in parallel, the__szgj 8s.7424pzhhg+ku d uu,j_______each resistor is the sz8s4zjks2g4jug.d+ puu7hh,ame.

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.33: A current through the thin filament wire of a lightbulb cmx kt 6bk93.- wlv1rnuauses the filament to become white 6 3mk-tnuwk. v91xrlbhot, while the larger wires connected to the lightbulb remain much cooler. This happens because

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.08: Some standard household lights ar n 9hyo zneu*gdnjfm(m.*+f2/e being replaced with LEDs. LED is the an m *gn*h9.(2zyf uoemdj/+nfcronym for which one of the following choices?

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5#
 
多选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.16: A cylindrical graphite resistor has length L and cross-sectional area A. ;m(ksf) b qn:fIt is to be placed into a circuit, but it first must be cut in half so that the new length is 1/2 L. What is the ratio of the new resistivity tofnbm)( fkqs;: the old resistivity of the cylindrical resistor?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.20: Wire I and wire II arce -c0bw20d +g-egqth e made of the same material. Wire II has twice the diameter and c0 qbe+2dw0-g te-chgtwice the length of I. If I has resistance R, II has resistance

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.31: Wire Y is made of the 0i0uidq (sfkavn;f+ t*k4. w usame material but has twice the diameter and half the length of wire X. If wire X has a resistance of R thenkk; 4qwd0tn( +vasfu * 0.iuif wire Y would have a resistance of

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.23: A cylindrical resistor h83z-tgbb:fz gas length L and radius r. This piece of material is then gbt8 bgz-z:3 fdrawn so that it is a cylinder with new length 2L. What happens to the resistance of this material because of this process?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.27: A junior Thomas Edisoen )+ 3ighvs(4u,esukn wants to make a brighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightb+sug eiksv3( eu,h4) nulb produce more light at a given voltage?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.07: Three cylindrical resistors are made of the sammaaa c* 0 l4:jf/fjvi:e material. The length and radius of each resistor vjlj0cfa f/ i :ma:4*ais:
Resistor 1: Length L, radius r
Resistor 2: Length L/2,radius r/2
Resistor 3: Length L/4,radius r/2
Which one of the following choices correctly ranks the resistance of these resistors (R1,R2,R3)?

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  13.22: Four resistors, each o61djq1jlnr v7 f resistance R, are connected to a battery in the following way: “Two resistors are connected in series. This combination of two resistors is connected in parallel to a third resistor. This set of three resistors is connected in series to a fourth resistor.” 71q6drn1j lvj What is the equivalent resistance of this arrangement of four resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.35: The voltmeter in the accowm10c zp2jdq6bc-h -empanying circuit diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 16qde jp-0 m bhzw2-1cc.00 mA. The voltmeter reading is most nearly:


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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.37: Consider the compound circuimz,8u7lbgi ,zksn 9 5x v;u:.xeosei:t shown to the right. The three bulbs 1, 2, and 3 - represen;x7z gek9v,mxi5bn.le:oi: su ,8 szuted as resistors in the diagram
- are identical. Which of the following statements are true?
I. Bulb 3 is brighter than bulb 1 or 2.
II. Bulb 3 has more current passing through it than bulb 1 or 2.
III. Bulb 3 has a greater voltage drop across it than bulb 1 or 2.


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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.30: Given the simple electrical circuit at the right. If the current in all tp ,nvl(bns5ha* 7ri3three resistors is equal, which of the following statements must be true?npvinbashl 7,r5t(* 3


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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.37: The diagram at *l+3d hf:ieed-xgb 2cl):alaright represents a simple electric circuit composed of 5 identicadl:a*lcd fh+i3 e e-2g)x ba:ll light bulbs and 2 flashlight cells. Which bulb (or bulbs)
would you expect to be the brightest?


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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.03: Which of the fol9nx f z;0og/fblowing statements is NOT true concerning the simple circuit shown; 9fn/z of0xbg where resistors R1, R2 and R3 are have equal resistances?


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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.29: Two lightbulbs Xgk i0g ; c;eyuv3./kcvjw: *pc andY are connected in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected in parallel with each other to the same battery, which one of the following choices best represents what 03vcg;j. yc v;:ewick u*/gkp is observed?


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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.34: How many coulombs will pass through the identified resistor 8e6m;lruh b/fin 5 seconds once the circuit was clefu/8l6hmr b; osed?


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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.23: If all of the resistors in the following simple circuit hhtv;hyz hq;3e7nks ; c-p8 a*dave the same resistance, wh-yph3ehstcdz8q*;; 7 khn;avich would dissipate the greatest power?


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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.34: In the accompany4slohd,t1sm7c,0z s ying circuit diagram, the current through the 6.0 Ω resistor is 1.0 A. What is the power supply voltage V?dch0,l, os4z yt71sms


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.27: Three resistors R1, R2, and R3 are connected in sj0g.b7mu2dr5xlw vwp 0,v- cveries to a battery. Supp7- wv,bd cgr5lv u.x0m wv2jp0ose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipates 6.0 W of power. What is the voltage across R3?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.40: Three different resistors R1, R2 andR3 ar 5brc8rj de,bd, hk65qe connected in parallel to a battery.rdc, rj5 h 8b6k5q,bde Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What is the current in R3?

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.13: A heating coil is rated 1200 watts and 120 voltstn np;.5 4( ep r gfoa(8da9ax/wsvv0f. What is the maximum value of the current under these conditisa(d/pfx 5a90vnfe a g(.n v8tr;wo4pons?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.23: What is the resistance of a 60 watt lightbulb designe;9douxh :m1l1 a rz(oqxvm p)*d to operate at 120 vxal1 (9r1px;vu:m*d o )ohmqzolts?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.09: How much current flows throug*8 qm+qk*s ozdh a 4 ohm resistor that is dissipating 36 watts of poweks+8qqm **dozr?

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  05.21: A household iron used to press clothes is marked "120 volt, 600 watt.” It6 + 8qsfi .e;*c6vcjjnd3u ynn normal use i6+s*cnqfcjyjn6e;ud.v38 t , the current in it is

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.05: Which of the following resistances could NOT be produced by mg; ep8j vl p5*z5lrcgp v42e3a circuit containing only thre*g g5mp48 j5ev2r pep3lz;c vle identical 6Ω resistors?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  94.37: You are given three 1.0 Ω resistors. Which of the - yg 22bw,hqc5,15u lvoimrjo following equivalent 2bymqj,2oh15luo-cg5 v ,wr i resistances CANNOT be produced using all three resistors?

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.06: Three resistors of different values can be connected together ie6((mqpuiid ) jydxk ,(p gnc/(b8o (in different configurations. If all three resistors are uip/ucxnjdqp6)((i(di, (g mkyb (8eosed in a circuit, how many different values of total resistance can be produced?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.35: When a single resistor is connected to a battei)d)ubv h thg-.9fw o,ry, a total power P is dissipated in the circuit. How much total power is dissipated in a circuit if n identical resistors are connected in series usinotuhwg,dv)i.-) fb h9 g the same battery? Assume the internal resistance of the battery is zero.

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.16: When two resistors, having resistance R1 an e.rjr.k+( * s+x,nedi0 kndxjd R2, are connected in parallel,,nn +r0+ jxkexkisdd *r .(ej. the equivalent resistance of the combination is 5Ω . Which of the following statements about the resistances is correct?

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.46: A hotplate is designed such that it has a resistance of 12Ω when 5r 1tucsg,qj ho4j2+ pyp0t k-operating at 120 volts. What is the minimum amount of time that it wkt0 ,oj -c2 t+psgq4uprh yj15ould take to warm 0.45 kg of water from $15^{\circ}C$ to$85^{\circ}C$?

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.09: How much current fxfgph038, egu lows through a 4 ohm resistor that is dissipating 36 watts of pow h ge3pgfx0u8,er?

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.24: An electric heater draws 13*w6n*y 4 .0nogw nql*c*zifuw amperes of current when connected to 120 voltsun l0zg.wf* *6i *n4oqn*ywwc. If the price of electricity is $0.10/kWh, what would be the approximate cost of running the heater for 8 hours?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.05 Approximately how much would it cost to keep a 100W li1y 90 wrs kwpptvm )vi2raa3un;h)c63ghtbulb lit continuouvph0k9iv 16 w; 2r)ntw3 y)a3rmucs apsly for 1 year at a rate of $0.10/(kW.hr) ?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.09: A constant current of 4.00 A throughpq o3q-w5nkq* h9t hq. a lightbulb results in a power of 24.0 W associated withok. 9qqtq-q3h*n5hp w the bulb. Which one of the following choices best represents the resistance of the lightbulb?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.10: Each member of a family of sixyo- zujg)x.i- +-dau n owns a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protect j. nd-u)-ga+xyuz-oied by a 20 ampere fuse, what is the maximum number of the computers can be operating at the sametime?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.16: A 9-volt battery is connected to four resistor)j go*3 b2udhvs to form a simple circuit as shown to t)bgo*uvhjd 23he right.
How would the current through the 2 ohm resistor compare to the current through the 4 ohm resistor?


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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.17: A 9-volt battery is connected p5ik fg5ylw, -to four resistors to form a simple circuit as shown to th -k,f5lwpig5y e right.
What would be the potential at point B with respect to point C in the above circuit?


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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.21: An ideal battery, an ideal ammeter, a switch and three/ph p*3l-miof*wufw( resistors are connected as shown. With the switch open as sho -fmlf iwopp* /*wu3h(wn in the diagram the ammeter reads 2.0 amperes.
With the switch open, what would be the potential difference across the 15 ohm resistor?


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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.22: An ideal battqx3az1 + u9pv)h e8obcrr sg9:ery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch opeuxzr p 9 hv+oqs3ga9b)1:ec8rn as shown in the diagram the ammeter reads 2.0 amperes.
With the switch open, what must be the voltage supplied by the battery?


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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.23: An ideal battery, an ideal ammete *8nn( *l6v.hlm :;xf mk ydjv)xing5kr, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter read)gkfmxn*(v6h x;5 i :ynv8lm d.nl *kjs 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.14: For the circuit shown to the right, what is the equivalec.tc8mwoc 6x()mra ;d nt resistance? Assume that all wires are ideal, the batte6(wmoc8c) mac d ;rt.xry has no internal resistance, and all three resistors have identical resistance R.


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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  09.07: The equivalent resistance of the circuitc7ae)berg1da b6d (,n shown to the right with resistanceb b d,er)7egcd(1aa6n s $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ and $R_3= 2.00Ω$ is


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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.20: The diagram below shows five identical resistors connecz1bs mkq(le9r i,+f kur22p,zted in a combination s(9rei2zkrm 2 +pk f,lqb,uzs1eries and parallel circuit to a voltage source.
Through which resistor(s) would there be the greatest current?


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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  04.21: The diagram below shows five identical resistors connectedi;n (f-3xqutihc xvy- m3z4+q in a combination series and parallel circuit to a voltagecqhim3x(- +uiqv;t y zx3-f4n source.
Which resistor(s) have the greatest rate of energy dissipation?


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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  07.29: In the circuit diagram, all of the bulbs are identical. Whivu 6 y5 hj5w2d ,a94getkxawp;ch bulb will be the brighte;t5av6,w u4ag59kx2 jdhy wepst?


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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.21: An ideal battery, an ideal ammeter, a switchdpkvc10 +e(cnk.q1 n x and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter read1k(1v+cp . qncdxk0n es 2.0 amperes.
With the switch open, what would be the potential difference across the 15 ohm resistor?


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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.22: An ideal battery, an ideal amf luy3b8j;hd cc9 e o34:yj.remeter, a switch and three resistors are connected as shown. e:e.jhy4olu89; jdfb c 33rycWith the switch open as shown in the diagram the ammeter reads 2.0 amperes.
With the switch open, what must be the voltage supplied by the battery?


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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.23: An ideal battery, an ideal agp;ijp.j9;azy m c:3 s vi2r*fmmeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter2v 9y mgj*;p:ajicps3.if; zr reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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