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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 sh 0v 3lqt im1f4*yxlmx.own, an electric current exists in the metal resistor connected to the battery. Which one of the following choices best describes the direction of electron flow through the resistor and the direction of the electric field through t4m m.3lixv txl01yq*fhe 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 pa /ev3 lsxg0cb0rallel, the_________each resistor is the03vsc lg/ 0xbe same.

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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 sj j:+1um+ hj h2onb/l5obg/fwire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much coolehf obj/j g+21:/s5 njho+ml bur. 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 ligh d p05 i()ycpjcpxl9e6ts are being replaced with LEDs. LED is the acronym x 0py(5j9cdelp)6pic 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 hasu,lo /con;tp*gz0: lv length L and cross-sectional area A. It 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 to the old r co,nl p/ogtv0zu:;l *esistivity 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 are made of the same ma6,t(hn xo.qj3 b el;puterial. Wire II has twice the diametj, . q;hetxl6b3upon( er and twice 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 same material but has twice the ddn.q(2l wanx 0iameter and half the length of wire X. If wire X has a resistance of R then wire Y would have a resistance ofn2dqlwa0(x. n

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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 has length L and radius r. This piece of m dnl+ n6h;nt2od5d(ymj w7)p saterial is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of this (; + 6slpdndhdymn)7o5 2wtjnmaterial 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 E.r.cn-a1 l4 1jv hzbrfdison wants to make a brighter light bulb. He decides to modify the filament. How should the filament of avbl1hfjzcn.4a r-. r1 lightbulb be modified in order to make the lightbulb 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 resistorsut7yte1gafe vsrjpi*xq tdx .-240,; are made of the same material. The length and radius ot40,xe1*a suryq g- xd.ijpt 27v;f etf each resistor is:
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 of rejb6xji2g+8 eh sistance R, are connected to a battery in the following way: “ g8j6ix2hj+ebTwo 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.” 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 acco(i..v+pmsmn mvj1 .o;d ynze7,x/k cimpanying circuit diagram has internal resistance 10.0 kW and the ammeter has internal r/peciik d nsmv j.+;vyz7,o(xm.m.n1esistance 25.0 ohm. The ammeter reading is 1.00 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 circuit shown to the right. The k s+nx r 33qvv8uwi /njjk0x43three bulbs 1, 2, and 3 - represented as resistors in the n0x3vnwxuk 3j3i qv8+4sj k/rdiagram
- 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 jjynt*0d(4xa)f cwt6 all three resistors xd)0tyj *(6cw ajtf n4is equal, which of the following statements must be true?


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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 right represents a simple electric circuit comp6b pd(a2:7h8jl jvr xcmdd ,rx+p)jf8osed of 5 identical light bulbs and 2 flashlight cells. Which bulb (o7bf8jc, ): pmdx pljhjx68v(2rdrad+r 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 following statements is NOT truecu;gg0m+ce. c concerning the simple circuit showc ; m+u.c0gcegn 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 X andY are connected in serief,0kr gq rf9ejkj: jdj7y9n21 s 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 sam:fnjj yj7drkg9 f29 k1qj ,e0re battery, which one of the following choices best represents what 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 coulomd u (i fvzv*)hm.zi/7obs will pass through the identified resistor in 5 seconds once the .vzu7fv/mod i(i z *)hcircuit was closed?


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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 r4qblaeoav qm*se zx / 9/b4y(9esistors in the following simple circuit have the s z9*ybe (e4 oa/9x4vmlqs/bq aame resistance, which 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 accompanying circuit diagram,s1 :ldxyny6m vm:;cqz1 osg;, the current through the 6.0 Ω resistor is 1.0 A. What is the po;q6: dg: s1l1s xczvy;m,nyomwer supply voltage V?


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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 series to a )zajy 6n17zvg battery. Suppose R1 carries a current of 2.jv1zz7gn)ay6 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 are connected in para t(k3o+-v 6b 9h w ;iz(wihg.zm/omxqfllel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R/ k x .i hzwib(3vfh69( wmgq-o+o;ztm3 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 rate1z3 .i8ra mnzid 1200 watts and 120 volts. What is the maximum vi.m3nraz 8z1 ialue of the current under these conditions?

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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 5lqxk j bg 0uf2u(;+lk.pdn.l of a 60 watt lightbulb designed to operate at 120 volts?uj+ 2 l0;gnqdfblpuk. (x.5 lk

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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 through a 41r3bsuaw ;k8q tpvirao (r;l8g ca/d :/ig- h* ohm resistor that is dissipating 36 watts1(w8 -r;gbrl tpd:a gas8ahukioc* vq/r3i/; of power?

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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 cft/lu 39bg6c olothes is marked "120 volt, 600 watt.” Inb otf6g9u/lc3 normal use, 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 resistancrs3mz 3cd :7+xazo *xses could NOT be produced by a circuit containing only three identical 6Ω + 3cox*:zzsda3s rm 7x 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 folxge(,rn(x; buom32b ulowing equivalent resistances CANNOT ,(rexmb(u3ux ;2 ongbbe 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 in diffe6jgk zy/6l wp5*b 3jjcrent configurations. If all three resistors are used in a circuit, how many different values of total resistance can be produjg*y3p6/lzwb c kj6 j5ced?

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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 ba rkf 5hhw)21qfttery, a total power P is dissipated in the circuit. How much total power is dissipated in a circuit if n identical rkh h2fq5fw)1resistors are connected in series using 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 resistan 4g3r9p-xuiu uce R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the followin4gr- 9uupu i3xg 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 resist xteywdwo -5yc1 (gggk**+j r,ance of 12Ω when operating at 120 volts. What is the minimum t *k(c+gyw ewy-jdg5g1 r *,oxamount of time that it would 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 flows thrn,*fvsx t *u:jki-0mi tlq7q 9ough a 4 ohm resistor that is dissipating 36 watts-,q7vu*j nst tfmi x i0k:l*q9 of power?

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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 qye qf wa-byq/ jyrr+i):.(,a draws 13 amperes of current when connected to 120 volts.ayy r q.fb)/+aq(-rweq :j,yi 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.y 4ff)/pd8gqggr wk8 lightbulb lit continuously for 1 yearqdkg8)fp w8 / gfgy4.r 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 4/7 3)t8 r+cbbyc tfkmw.00 A through a lightbulb results in a power of 24.0 W associated with t7 crwf8kyt c3/bt)bm+he 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 six ownsuv k ;hc7:o3ddmw0w b8d vks7, a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into a ;dd7,3bk8d0uosw7: mk h cv vwsingle circuit protected 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 connectg*fqbrcy z4 +*ed to four resistors to form a simple circuit as shown yc +4 brgqz**fto the 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.-x0doy2 nv.8nbsj 7u t 3dubt is connected to four resistors to form a simple circuit as shown to tt db s2u8bjyn.t7 xd0uv.o3n-he 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 am:ik i6uys6eu t*(c(qh meter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2hk:ti(* u6i6ce qsyu(.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 battery, an ideb.puo b umlw+s)e( b 9)otdmc; 6d;-yyal ammeter, a switch and three resistors are connected as shown. With the sc(sd;.puu ; 6eblbmd)ywy9ob o- +m)twitch 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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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.23: An ideal battery, an ideal ammeter5n ,l5h4czqq9kyg2xf, a switch and three resistors are connected as shown. With the switch open as shown in the diagraqz45qf9x n g2c5,ylh km the ammeter reads 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 equivale w1 cn2uezz5 9i2*gcupnt resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three 1c 2p z*9g2iwun5 czueresistors 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 circuit shown to the right with r2mic51srinn+m 0s.zz sa,hi+ esimn20 an1 ,izrh5m+z s .ssci+istances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 reaxwtb7d8+8c1pi o mb f:ess/2sistors connected in a combination series and parallel circuit to a volta8 ce+: fbtams7iw1o2/sb dx8pge 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 resh3bhzb upj 20,istors connected in a combination series and parallel circuit2hz0,hubpb j3 to a voltage 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. Whit/r)fove jbj xxvwm: +,c 9oxki*w+ p /.,nhm;ch bulb wi+okxm,pmh:n , +j j/xf.it ;v/w9)bc*xowverll be the brightest?


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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 ifjh 9 /fc2o)dwd, z7pqdeal ammeter, a switch and three resistors are connected as sh7jf o)/w 9zdphq fdc,2own. With the switch open as shown 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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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.22: An ideal battery, an ideal ammeter, a switch and three resistors areb9/.m)orp;iyf8 cw, yt pruh6 connected as shown. With ther6p8mt)y o,y cw9uf r;ih./ pb 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 ammeter, ad6bbki 8z9lf9)kg t*t switch and three resistors are connected as9tz9 fil)8gkk*bd6tb shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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