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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 metale s ncu()j26wc resistor conn2e6)nsc uj (wcected 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 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 resistor v0lb8tau(/eygrvn.y-(r 8sp9iwj e6s are connected in parallel, the_________each resistor is the samerte(r yl.w(8bvei j-gnp 9 u/vy806 as.

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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 qmxkl8ki p)(7,tzcg, of a lightbulb causes the filament to become white hot, while the larger wires connected to the ligh cpk)7(,lx,mq tigz k8tbulb 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 househo-627zdb6c b*msufbysr )gf i4ld lights are being replaced with LEDs. LED is the acronym for which one of f sbrc6by2um gsdi b f)z4-67*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/mk 0fa6+6ho ah1wyc l-sectional area A. It is to beo16 l/am+kywha 0fch 6 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 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 hasw5k25ycpr2s e twice the diameter and twice the length of I. If I has resistw5 25 srpyke2cance 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 bus/w w )ivb.zz7nm 7e-mt has twice the diameter and half the length of wire X. If wire X has a resistanc)mz-nm7iwesv/w .7bz e of R then 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 has (gi8 s(erpvu5xq+du)-so (q qk;pw1 olength L and radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of this material because of this process? qi+vuor-q) pupqx(o( sws(gk e5d 18;

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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 Edison wants to make a brighter lighty(tm : ,dg9hq;0dikfo bulb. He decides to modify the filament. How should the fil:it ,g09 (yf;dmdohkqament 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 g 5xe*(ggdd dit6 2//zszqyn ;material. The length and radius ofz6tdz;y i5g /es gdg (dx/nq*2 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 resist; kmlwrjbvg-wgk. (2 ,ance 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 resiswkgvwjkr.-g2m (, l b;tor. 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 ia 88boqh-nx4js m80yl5 mep( in the accompanying circuit diagram has internal resistance 10.0 kW and the ammeter has internaj88q8 la(-e4yi5mx p 0boh smnl resistance 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 three bcsz sv3q1*) khulbs 1, 2, and 3 - represente*1zsc3qsvhk )d 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 simqin mkkjf(g*1u t b:;,ple electrical circuit at the right. If the current in all three resistors is equm;,n:i 1ku kgb f(*jtqal, 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 composed of 5 t+nf)y4xzr+(l 8ihxx identical light bulbs and 2 flashlight cells. Which bx8 (hft x)rn+ +izxy4lulb (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 statements is NOTn2f- dgvuw1zm uapj,4 bgx3kjs; 5+q2 true concerning the simple circuit shown where resistors R1, R2 and R3 are have equal resiw1;jf3 up- k2u+qg54v, bgjzsxnm2 adstances?


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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 series to a battery. Bulb X is/(*m o ,6bdl7chi xtws brighter 76 d(,i*chx/bolm stwthan 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 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 throb1 7fn;cbbb gb3(m28. hyle nough the identified resistor in 5 seconds once the circuit .;nfbmbo1bh3l bge(y 8 b7 n2c 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 tm vbz749dno 6ahe resistors in the following simple circuit have the same resistance, whi6onbva 7 zm4d9ch 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 diag9zorxwz;b4l 9 9 zv;spram, the current through the 6.0 Ω resistor is 1.0 A. What is the powevzzsor9zl4w xb;9;9p r 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, ojua25ltq 0n/17 u-o :osdewd R2, and R3 are connected in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistanco0- d7:qu l2/w51eajt o uodnse 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 differen)5(zs q qmadf2t resistors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, f5)aq2 dsq m(zR2 = 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 volts..fde n80r2ny5b ufl5s(alc k. What is the maximum value of the current under 5dylsl85nbc.n 2 k 0.uea(frf 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 os b8t6*gf)x tx1vz/ti perate at 120 6vxg/xzt1t b*ts8fi ) volts?

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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 4 ohmkimcchk b-4:g/p mq j3jiw+8v81 u ds- resistor that is dissipating 36 watts ogc8j b18d3:-kkwq h 4ci+j m-/si mvpuf 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 t 9s flwv p40,qsi4gg+ro press clothes is marked "120 volt, 600 watt.” In normal use, the current in its,fsgp40 vglwr 94+ qi 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 ret-jn +mpn /aq+ 0raiovfyw, )rc9y :5dsistances could NOT be produced by a circuit containing only three identicala9yj/p +qi+-:vm rnyn5)ocdt a,0 wfr 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 j hc,,lm gjr)-Ω resistors. Which of the following equivalent resistanc h)-mj c,jl,rges 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 vp 019ill.)qf wsmll .g8p8pp(9aahe salues can be connected together in different configurations. If all three resistors are used in a circuit, how many different values of total resistance can be produced?g)m. pliw p9 8 1e p9sqpfhsa8.l0lla(

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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 conne wauu814 d32bku3sdckt7h6 )ulg .kqs cted 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 series using the same battery? Assume the iwssq4kud 718 b6 3u.k3)ca2ul tkgu hdnternal 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 and R2,9e0hq.xti db h/.rc1 v are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statemen tv/.b.i0xc rq9dhhe1 ts 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 .mprk,xju7wa/ / r0qdresistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it wwpd,.xqa7k/ 0r mrj/uould 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 through( cstskwd2:ymh;u7n 9 a 4 ohm resistor that is dissipating 36 watts of powu n;7cd:m(kw2y9 tshs 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 drawsire-:k+ a+f/1(n o.9ehhk bdys g 8rgw 13 amperes of current when connected to 120 volts. If +e n9k ./-grehaybfko1sd w8h+:( rigthe 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 as52oba5 a: +vammn9pmuch would it cost to keep a 100W lightbulb lit continuously for 1 year at a ratea2o sbv+a p9mm n:a5a5 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 through a lightbulb results in a psq6d5 u:)dozn ower of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of tn)zods 5qu:6dhe 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 a computer rated at 500 way s0ad elr w8:9qga,kv/d o551 gp+gpltts in a 120 V circuit. If all computers are plugged into a single circuit protected by a 20 ampere fuse, what is the max9l8 +poge ,wqsd5l agryv/5 g:k1p0ad imum 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 resist;h,ko 4tm,gavo/ o0i iors to form a simple circuit as shown to the righo, 0av4g/tomik,;ih ot.
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 convg(pm-sp ss- v fe8tu6 3qllici:g553nected to four resistors to form a simple circuit 6e 5-q 5 s cugsm(sg38pl3lvipt-: vfias 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 ammeter, a switch t+ sn9j 83rv4lht . y2p3vgsqrand three resistors are connected as s hv t4r982 r+y3 slgps3t.qjnvhown. 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 switch and three resistors are co qd q/stf0kky )i+bx4.g; joi3nnected as shown. With the switch open as shown in the diagram thegdk)yq4t0xb+kij3is ;f/ o.q 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 ammet-4 8zkfz9gr cder, a switch and three resistors are connected as shown. With the swirf49dg kz8 z-ctch 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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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 equivalent rj;o2iqq( vp3tj;8acr7f/ ovx esistance? Assume 3f 7q rpv vcj;( txj/io8oqa2;that all wires are ideal, 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 right with re aklvy0 g.h*ep(;0sihsistancesh gih .l*( kp0a0vy;se $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 connected in a combix .hm:e 22ho; o mvxyi,lbhp08nation series and paral;i2o0p x,bo.lmh 2vex m: hy8hlel 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 cooe zq +umt16:yl (zos7nnected in a combination series and parallel circuit to a voltage :uyqtl+e o6ozs m1z(7source.
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 c4egplbhjd i,8kfb(c ::*1b /fukn a3 the bulbs are identical. Which bul:4pf8/jdan b1,efkbc3cb klih :g(u *b will 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 ideal ammeter, a n 09q/,nqbity/4hr fuq ,i ;ppswitch and three resistors are connected as shown. With the /f;qq,yhi ,r4b qnip9nu /0t pswitch 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 are w4u(hj.a7oo h connected as shown. With the so jhw4(a. 7ohuwitch 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, a,12cexx m 0.rlzok6okn ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter r2zx.xolc k6 me1 kr,o0eads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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