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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 tj 4br3g*u)arbr7, u nihe metal resistor connected to the battery. Which one of the following choices best describes the direction of electron flow througun,7bu )ar3i4brr jg*h 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 resistors are connected ine bxghnx9;/ h+ parallel, the_________each resistor is b h9gx/hx+;nethe 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 th5txnowe x-r(y ;)wa0 d gqth5:e filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This happens because-d ogew5ht;) awyxq:5nt(x0r

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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 ks57gq yjfp qlnt.wr:657. dphousehold lights are being replaced with LEDs. LED is the acronym for which one off j776psywglk5q5.pq t.:dn r 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 Atbyl a +mh-:+j. It is to be placed into a circuit, but it first must be +thjy-lam b+: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 ,t-*wgguz)3s s j,6l9wwzbv smade of the same material. Wire II has twice the diameter and twice the length of I. I 9vg6l,zw-jwz),uswg bs*s t 3f 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+qbec9 y5j.cp e y8g;j material but has twice the diameter and half the length oe +j5;p8g cq9j.ycyeb f wire X. If wire X has 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 resistor has 18fsau+i xw ierb24 x9length L and radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. i1a+4 bxs2 er9w8ifxu 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 Edison nf1a (m hbxk77wants to make a brighter light bulb. He decides to modify the filament. How should the filament of a ligh nxh71kmba7f (tbulb 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 arer2b-bl/gq2 pen;a3sz n7me z9 made of the same material. The length and r2 esa7er9bqgzp2b ;3m/ z- nlnadius of 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 resistance R, are connected to a batted9aj-*/k 8flxtoe8x bry 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.” What is the equia8 ox 9 eltjx/-*b8dfkvalent 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 iwfu p.8gt. b8cul8q+rnternal resistance 10.0 kW and the ammeter has internal resistar.uqgc8.+btu f8 wl8 pnce 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 circuiuo07tk ;0ruth t shown to the right. The three bulbs 1, 2, and 3 - represented as resistors in the diagram 0 uoutt0 r7;kh
- 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 rigu*b 0,wzl e.tiht. If the current in all three resistors is equal, which*,z 0 btiuwl.e 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 nzu9 *0x2j fua5 identical j fx9u0zua*n2light 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 statements is NOTfqp/ p4 nods-og:k4: b true concerning the simple circuit shown d:poq4g/:s4 bo-fpkn 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 series to a battery. Bulb X is ucg- yni) rlfe7tnn9;0ilf ,3brighter than bulb Y. Assume all cirf g0 ec9ll ;7fnn -n3t,i)yirucuit 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 c1kblwd h-b2 zc:y oug6xk7mp ,-hkw (.oulombs will pass through the identified resistor in 5 seconds once the circuit was closed6d hbo.:ylkwc wh-z2,g-k x u(kmpb 71?


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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 circuitkgw/ zfof. zz1 w/a9c/ have the same resistance, which would dissipate the greatest pofzc1ok9/z wg//w. f zawer?


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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 accompo8i8jw6 tw /mqanying circuit diagram, the current through the 6.0 Ω resistor is 1.0 A. What is the power supplytwojqi8m w 6/8 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 s-4ll x.2phatjeries to a battery. Suppose R1 carries a current of 2.0 A, R2 haj-ltxa.h2 4p ls 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 connectsw/czm(mvxr / o m2l3;ed in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What is t( o lm/r z2xcms/3vwm;he 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 coil616md +6wczod: ihly emcr,+e is rated 1200 watts and 120 volts. What is the maximum value of the current under these conmz66mho i+ de6rl: y,d w+ec1cditions?

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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 lw . qfxk5tyh30ightbulb designed to operate at 120 vyth 03xfq 5k.wolts?

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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 fl8l)t ehlto+ :hpdxcm17ef59s ows through a 4 ohm resistor that is dissipating 36 watts of pow )fhx 1p:ollcest5+ m8d9h7e ter?

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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 irosm60ag tjz)w wvzq0f/fud4:6 to 58jvn used to press clothes is marked "120 volt, 600 watt.” In 5o uw0 zqsfgwj8 v/)j0tad64m ftz6v: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 drl hxc05y,6 zresistances could NOT be produced by a circuit containing only three identicalz rlc, 0d6yhx5 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 themq5avr+ td5p/uxm-5i following equivalent resistances CANNOT be produced usin5v5 /-+5rdxiqt pmam ug 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 connectn 1u8 2 b*a6em zfy51aohmls6fed together in different configurations. If all three resistors are used in a circuit, how many different value m y162slano586 *m1uhf bfzaes 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 resis4brhkv ze8: 0wtor is connected 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 internalkv w :breh8z04 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, are connlh3v8 l qr8kk*ected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements av8h38l*l kq rkbout 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 its+snd xltw e,2g46 i+c has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take tnsi+ +e dwlsg4 6c2,xto 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 a 4 ohm resistor that is db41 a;p;t me6lwmq- wo uug23kissipating 36 watts ;tbq3m1 u ;pukaml-ge 2ow4w6of 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 drawdr)u gq;(vl,nsb9a /j s 13 amperes of current when connected to 120 volts. If the prigj,l ( 9q)srudnva /;bce 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 lightbd w583cug1k5h hyrf )vulb lit continuously for 1 yearwgy 3f)h chdkv5r851 u 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 through a lightbulb res 86qwvsqbn1pg*rbkc9ha (1v ,jj:a9pults in a power of 24.0 W associated with the bulb. bbw1v 6hrqkcj p *p ,q91s 89nagvaj:(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 a computer rated at 500 i u arr t;-l07+3gvqnuwatts in a 120 V circuit. If all compuri;qtuar3ug +0n vl -7ters 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 simpi14j wj l:j gsd;ug6xjo+ (*file circuit as shown tjd j4 *;xg(wifljsi1ug: j+o6o 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 is connected to four resistors to form a q tv0dzqv1o.8z7mh4m n)xh 2ksimple circuit as hmhvokzq 8q4m.)0znt7xv1 d2shown 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, 9nrh- (b4vx*unnsiv5 a switch and three resistors are connected as shb*5-unn(nvshr i94v xown. 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 resistor/g*amtt(xc s9s are connected as shown. With the switch open as shown in the diagram the ammeter smg*c/9attx( 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 resi5xa ;8pwiq, cmstors are connected as shown. With th i5,m;aqwc 8pxe 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 jfh, m)c ki1p*to the right, what is the equivalent resistance? Assume that all wires are ideal, the h1c fji )mkp*,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 rignst8q r*:ngsn.- l0soht with resistance: n s .l-tso8ns*r0gnqs $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 identi50fhqrm3w yu5dp kb;(0t g9w i/kwy8ical resistors connected in a combination series and parallel circuit to a voltage s85wk/0;f3rpq y9i igtkb0wmh5 duyw( ource.
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 p(7 oa1jtcyn/2)fn k eshows five identical resistors connected in a combination seriekyca7(n)t1o j/ne 2 fps and 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 diagram, all of the bulbsqhp xc0g 6))z qr.yp)l are identical. Which bulb will be)zq.lhx)c rgqy6p)p0 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 battp5khyeqds86kh 0j , j6ery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in tp yj 5jh66,hq8ke0k sdhe 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 sw)u cf+ke7oo ;witch and three resistors are connected as shown. With the switch o)ceu;f7+ o wkopen 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, a switch and thry7(i0arvv 9 xgee resistors are conna gvvryxi (079ected as 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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