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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 elecigru.g+j)v2 e tric 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 thei. erug)2 j+vg electric 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 parajf-j 0/xi-ftt*e4s v j a0+gdiluts,0llel, the_________each resistor is j ati+,0l v/i*sj x4t-tf -dufe0sgj 0the 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 thbadbtb,+bt8g mr7iy7.nk pz43pi(c1 in filament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This happens becaca,z4(m3dg1ip7b i.r8pt kb7ybn + t buse

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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 2gi9c1mhv ; oihousehold lights are being replaced with LEDs. LED is the acronym for which hi 1oic9;m2 vgone 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 cros79 5 y7fslhv1aic pc9js-sectional area A. It is to be placed into a circuit, but it firsa179lp9vsjfc7 i 5chyt 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 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 are made of the same material. Wire II has ;kuqsutph7+/tggei 3 692oy lra j*;dtwice the diameter andkas9 ;uy+rp; u2d*/ lq76ohggetjt i3 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 bu f zfbt698lla(5nl*tk t has twice the diameter and half the length of wire X. If wire X has a resistance of R then wire Y would have a resist bt58*6tnl( fl9lkfaz ance 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 has length L and radius lt k x udsqek+1g2gl(:ol 4uqe(8 j(g3r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of tk:euqs 4( og (d g(k1+u8xg2l3 qljetlhis 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 Edisoyk0ojj5fwn atr 3rzw1osb17 +htb , 1+n wants to make a brighter light bulb. He decides to modw+jo 3 ,tb1w+z7onh 01y1fk5 brstarj ify the filament. How should the filament of a 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 resistors are made of the same material. The lenludmrw p6.*q;gth and radius of eru* q mdw;lp6.ach 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 resistancedv rin(/c q8rtm02q+a R, are connected to a battery in the following way: “Two resistors are connected in series. This combination of two resistors is connecvria/q2 (+r8nqmd0t cted 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 accompanying circuit diagram has internayc2c wd l5cwb0oz)e /y h:,i(ul resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading is most nearly: hb)u2ec0l,zw i (d 5w ycoy:/c


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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 circui-ixlm*u4u6rca (ozh9 t shown to the right. The three bulbs 1, 2, and 3 - represented as resistors in the d9umlio6cauzrx ( - 4h*iagram
- 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+7 ba3b.,v yy a,lmzpfp,mo0t circuit at the right. If the current in all three resi, 7,b0pbay+v,zomta 3 fp.ylmstors is 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 sw o(ll6wz xb,rhf 6w+,imple electric circuit composed of 5 identicawobrw 6,6 l,zlfh +xw(l 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 following statem4zs s f*e;.pr( ak2fkcents is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 are have equal resistances? kfa psk ;*.sfr(4ce2z


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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 a/9 )mlk-q4*,k 3 iaeyujho mps,etub/ndY are connected in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are4u,o s ),k3- eeb*iqlatymm/ph/9jku connected in parallel with each other to the same 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 coulombs 1w3o.7f zub b4k(xevjwill pass through the identified resistor in 5 seconds once the circuit b 4xb7(v1.oku efj3wz 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 resistors .u sn 51z7elhgyi8lc2 in the following simple circuit have the same resistance, which would dissipate tg8iy 7s lhun1le5.z c2he 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, the current through n7-qf,uyc,wb+l7p apthe 6.0 Ω resistor is 1.0 A. Whatw7- bp+cnlauf, ,ypq7 is the power 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*4uck)o 5:+sw boxcge , and R3 are connected in series to a battery. Suppose 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 tc*5 buwseo)oc:g+ xk 4he 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 parallel tnyiu3a n:-s ()-;zq*enqq yj qo a battery. Sunnq-nqy e3)u;a-: zq(j qyi*sppose 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 ei , aox5mn8b)j- gzl dfu+*v(is rated 1200 watts and 120 volts. What is the maximum value of tdjo*e l(, 8i-xmnb v+g )faz5uhe 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 of a 60 watt lightbulb designed to operatecimy,rpy 4b3*) rq dytv 0c,jc,0g3zg at 120 4 3tjci,qc rb,g0y,0 py)drcgy3zm*vvolts?

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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 an -pi2i /,bxo*bpek f;/0 nzg+6o6umsrqqw3e 4 ohm resistor that is dissipating 36 watts of powen bf6z-rpe/6+gnx2 iko p* m,qesbw3/ iu;q0 or?

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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 vn1cpj -fk06si5lk*2bwu a0rs olt, 600 watt.” In normal use, the current in 5p 1kwjiuk*f6r s02blsn c a0-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 resistancespry)fwuxh 3zy )+cpjclxm j2a651;s- could NOT be produced by a circuit containing cm5)lcx-xa; rpp) j2y6+wfuj 3z1shy only three 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 t )ss 6rxz;o.ad:g/x d/ch3 dmohe following equivalent resistances CANNOT be prodo .sas;z 6:/3d oh/ xmcxdr)gduced 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 different3p98jy5g;e/ jdiob s a values can be connected together in different configj83dgj/5y9e ; siap bourations. If all three resistors are used 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 connaq4kwn8 9 qw v.f*po;lected to a battery, 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 seriespnwqfk. *;v8 a9loq4w 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 resistanchu v4pqkprl-s;0bsdz 4p39z)e R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about the resistances is corrects-l p0ps; pqz3kb4r )u 4v9zhd?

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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 dekbq:kqp:q -8-qu8fgf0a h j3x signed such that it has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.45 kg of water fr:bfx q a8khq k-u0-g :q83qfpjom $15^{\circ}C$ 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 vc8 vf3 s(-iar.xmy.2 /; rjh. j e2kxhwhnx.ethrough a 4 ohm resistor that is dissipating 36 watts of pow8.. m.rjveh -wc(/h ihfjaesxkx2 n2;3vy. rx 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 amperes of curren/t8 il5*qykdt gzg tz5jv2)9it when connected to 120 volts. If the p*89tdzy5jilvzqgt5k ti)2g /rice 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 lightb4mk-lmi .k*tw 8ks.mub or5 1bulb lit continuously for 1 year k..bmo *immktw r ls4kub8 -51at 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 t 7nh:,z w +ajmo9wfwl1hrough a lightbulb results in a power of 24.0 W associahz:n7+o9,lmw1w j faw ted with 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 six owns d,gm uf4r2ylu);6rpf a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected by a 20 ampere flupruf, ;d6f 4)my2 gruse, 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 resistors to form a simple8i2nuu cf;vp 4 circuit as shown t84; nfu vuci2po 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 batt3yy/9sz atjo7w 37*q og kirw1ery is connected to four resistors to form a simple circuit as gzoq3s*31ko7/ wi yart9y7wj shown to the 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 amme, ah q p1u59 0j3rjkkb3uvq7ynter, a switch and three resistors are connectedv,90yqbr kq juap353j 7nh1k u as shown. 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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41#
 
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 switejqep /gm3c,-ch and three resistors are connected as shown. -/3,cj pgmee qWith 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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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.23: An ideal battery, an ideal ammeter, a switch and three resistor (m-r lbuo)v+bs are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampereuo)mb+-bl( r vs.
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 equivaleihb8vx7h e8) ;kdn)tbb*a+v tnt resistance? Assume that all wires are k hb )i )v+;*d8eathxb v87tnbideal, the battery 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 circuit shown to the rig(wno1q5vyr9jsd -fx3 2u,rruht with resistanuo2 9yfwjvrsqn-,5r dxu3r (1ces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 s w/tkv)0the2shows five identical resistors connected in a combination series and parallel circuit to a voltage source. evts 2)/0t wkh
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 connected in a combinaw /volram *1w2tion series and par w*1wv a/morl2allel circuit 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 b6;yu9htrhv0t ulbs are identical. Which bulb will be the tu09rht; vy6hbrightest?


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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 switch and three resistors are/quu 5mhq6jmc; vh:.x connected as shown. With the switch open as shown in the diagram the ammeter re 5 x;j6quqh m:mhuc/v.ads 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 amhbv: * cn.95ezq,ugse meter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2,:v 9* hqu5gs.enzb ce.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, a switch and three resisto 6(u0fgj*c(jgpi kf wu 6wra+2rs are connected as shown. With 6 wgk6j uwj(i *ffg+rc(2u0pathe 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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