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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 resi: vr*ed /+np7pcc p3e l3 iki16nx-qjrstor 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 throunqc/cp:e *i ep16j vkpi-7d nrr3+x 3lgh 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 connecornouqr 6eu(t (m)72j ted in parallel, the_________each resisqtru m j(eu26rn(o )o7tor is the 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 wire of a lightbulb causes the fila1h5rfgs7go (y ment to become white hot, while the larger wires connected to the lightbulb remain much cooler. 1o5 s ygh7gr(fThis 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 are being replaced with LEDs. LED is thean bepx6-4 q uo;vl2:0mjz6ob acronym for which one of the following choijbu0-2 6p; 6lmxovoaqb 4 n:zeces?

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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 graphirk*2-89 c;afgb gl+hqyy s+ nste resistor has length L and cross-sectional area A. It is to be placed into a circuit, but it fsh-lq2 *+9 kfbs+gc ; nrygya8irst 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 s-gpzx 5mqgf: 1ame material. Wire II has twice the diameter and twice the length of I. If I has resistance R, II has resistancp1g 5f-qm:g xze

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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 math -bmf -xvev2my-o6(f erial but has twice the diameter and half the length of wire X. If wire X hasemovf b - -26m-fv(xhy a resistance 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 ren.l ym)scfek) 1yb/3vsistor has length 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 pnk )m)3b cys.vl/ 1yefrocess?

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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 7-3si 7myccjh2f/wpn9 j0gyz light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb prj7/c3mgy2 0fn-i9sh pzyjw 7c oduce 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 length f4ofh7b fhqr 4kqc0o) ii 18;iand radius of each resist 0iob7k4hri1 )qq;ch4 8iffofor 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 .cdb .xe+lsbtu2g4 cmxqpx 7d 7/*qv+of 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.e7/ gdutpbq ms cx.7+bc x2qx*d+4lv. 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 90u6xqp )yfox ans5+dllc56dkxqnz 40 09dpe diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter re6 px904 d9luy)azo5d p0nx+q6clf5kxs de 0 nqading 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 shg2/2 xhhioxb urp 209(wuo9ar own to the right. The three bulbs 1, 2, and 3 - represe29ioug xou p0r(xh2rah /wb92nted 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 curvr:6 u+9m1dt2ol6 mnftnc-e prent in all three resistors is equal, which of the following statements must be tru 6ec-mtl+ou:df t6p9r1mn nv 2e?


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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 cir copj-+;6 acf,wtx- dlcuit composed of 5 identical light bulbs and 2 flashlight c;wp, df- tja-cox6+c lells. 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 statements is NOT true concerning ti.kt*pg;sv3 tcz. 2 arw9 qha(he simple circuit shown where resistors R1, R2 an ra.*h9;kc.vgta zpq (stw2i3d 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 c 3fvg/rf*pfn jwy t27;u9cjh ;onnected 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 sa3r* f9jgt; f7vp2 fu/j;nyhwcme 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 through the identified resistor ,s n idlk()7 i,19ia jn0kfpvqin 5 seconds once thk9q nla,i,i f nk7d js10(vip)e circuit 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 in the following simple circuit ha0jt woga ;9uwsb36 .lxve the same resistance, whicjw o;utg9 x0s .6b3wlah 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, the current through the pcnlc nd-66y.6.0 Ω resistor is 1.0c6 dnplc-. 6ny A. What 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, and R3 are conn6t+3ph .4xyy xt n8mrnected in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 p.ry6yhnt +4ntx x8m3dissipates 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 parallel to a batce+z 48wwgxf 6*zsn5y tery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 df5+y6sw zx*z en4gwc8 issipates 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 1, j;(2rwjo)vwwcmv s-20 volts. What is the maximum value of the currencj2mrw-o,; vww sjv()t 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 lightbulbinvizek6 70ogrd;t+ hva m .jpy :(,.nr+q3nr designed to operate at 120 volts0mtyj6q:zo gra, +n.r; nd kinh+r (e3vpi.7v?

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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 ohm resistor that is disd k :ugcj)-c-(chv5t8,kmdsf sipating 36 watts ofgkhv:fk)dcd -tcmsu( -,8jc5 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 cloti:5+khw: qb jqcgjjao) ;wv34hes is marked "120 volt, 600 watt.” In normal use, the curr c:wkji+4vwj)5q :gob; qah3jent 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 resistar:ym:q lat39inces could NOT be produced by a circuit containing only three identical 6Ω ret : a9ry:iml3qsistors?

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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 following equiva;:xf*1dzl wsi4grnrcvc*p g9+i. m1 blent resistances CANNOT be produc9svp1r 4r+id zb: n*lg;w*mgxf.1 icced 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 togethepj uo)c jt.;(is7 g,dbrc(8 nrr in different configuraid nu;rcj(cbto g)(.,8 rj 7pstions. 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 connecteds 8+:dkvx ,ys1 ib/0omo9uq1(leqdp k to a battery, a total power P is dissipated in the circuit. How much total power is divkq +o (l9:0ue1pb y,km18ssdixq od/ ssipated in a circuit if n identical resistors 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 resiste3brmf2 u sr:4ance R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about the resistances 3 :2rsfrbu4 meis 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 ;rn;jibxx +lmk0gbep 4x 142r resistance of 12Ω when operating at ;bxg+m1e rxp;klr2ij4 0n4bx120 volts. What is the minimum amount 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 throus6 wu9av;x bh2gh a 4 ohm resistor that is dissipating 36 watts of; hu6v2asw9 xb 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 d0a(k5/2wj joqf ub.jj,k0s gpraws 13 amperes of current when connected to 120 voltjqjo(j5fga u2 ,/0jswbpkk .0s. 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 mwpc55virm 0hyjf(9 ,to keep a 100W lightbulb lit continuously for 1 year at a rate 05pivm ,cf 9r(h5m ywjof $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 rzoxj:n5pvk,4fsee,7n6 6goy3 sed t7 esults in a power of 24.0 W associated with the bulb. Which one of the following choices bn,67t 5gjesvn4fkezd 3ep7o6s,y: xoest 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 a3mqr-4pni-*cp s wf4 a computer rated at 500 watts in a 120 V cw-p-* f 34aq4rscnipmircuit. If all computers are plugged into a single 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 connected to four resistors to form a simple circui0l 9 udlg f2y8wq4im.ot as shown to the right. 4y 0lo dm9w2fliuq.g8
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 connectqm72do+bwi /r92fyyj 0sn gq17 eb8szed to four resistors to form a simple circuit as shown tobszi me bw0j/+97 217n2ydyfqsgqor8 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 idea/ u1psmx pd;t8l ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagr pdumts/p8x1;am 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+ ephc,w 97qr :rkat)i are connected as shown. With the switch open as shown in the diagram the ammete7k )qct: 9,hipeawr+ rr 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 resistors ar/ 77+kgmgxs,pf/ug gde connected as shown. With tmdp x,kg7gugg/7s/f +he 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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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 resi/roz q 4fog1hazk yf jx.d:q+ i69su8*stance? Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have identical resistancer /zjkqs*aqihfu: 1 f dyo9x6g.8z4+o 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 8u/kdarya 0dg6br j--.*goe bi1+ ptp the right with resistancesgg- bjd r-pb1a k/r8ai 0+.tdupo *y6e $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 idenkq5, *np-dga.u t/iwirk71 m ctical resistors connected in a combination series and parallel circuit to a voltptmr5 i,a1 uw.7qki-ngc d*k/ age 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 connect szqvpc-v/o)ejk-p4v m8ap7nh 3e1d(ed in a combination series an7psczdqo - a-)m83ej4p h1e (/vk vnpvd parallel 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 diagu7v1z3x fq2-3ogj5fm,nq0lp b 1 edgjram, all of the bulbs are identical. Which bulb will be the bright5 jq f1n3egb lov-fgp d02,7z31xumjq est?


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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 cs53 z+dtc52i pfsbbgcx- *j m)onnected as shown. With the switch open as shown in the diagram the ammeter reads)b 3x-z sm5j bcgc*5ptif +sd2 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 swgy/e 3ym2rp3zitch and three resistors are connected as shown. With the switch open as s32ygem z/ypr3 hown 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, a switch a pa(ka.pl:9tf3 1y40jbx5 q;(voy efu9d glcpnd three resistors are connected asedy(304jy k9 pl.f bpx:f5 p(9g q1oa;tvu lca 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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