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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 lbu/p2pb7/d l 3up*x pc a 38n0n/jeuyelectric current exists in the metal resistor connected to the battery. Which one of the follolu p/ppdx3/*/3a8 e0pn7y njclubbu 2wing 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 resistors are connected int8ueiz :n 7 n*vdo2;bl parallel, the_________each resisto li8*donne; :zb7 ut2vr 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 filaqkp0t c4bty)6b* 5ec2 ep,wffment wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much coolerq ,tt y6p5 f)febc 0pc4b*2wke. 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 lights are being replaced with LEDs. LED is thbxe k en1g29 jty;(:xee acronym for which ;kyt2x1ee( xg:j9ben 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 re:w0dqijzk l;mp7)* ycsistor has 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 thel iyp:;0dqw)c mzj7*k 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 twfgzr l5//5 f(2)vpjidee8t buice the diameter 5 ) bpe5izfj/futvl8ge /d(2r 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 dr/yfq fo .ci-r;-e )dga g95dsiameter and half the length of wire X. de fodgr-q9 .;rg5fisc/y -)aIf 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 lenwy14rx386jc* wls btdgth L and radius r. This piece of material is then drawn so that it is a cylinder wj3 *t4c6y xw1sl rw8bdith new length 2L. 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 2q eh )b9ut*cm qr,+qawants to make a brighter light bulb. He decides to modifrc29qqetm , qua bh)+*y 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 -ha g/fh3-pr,iwhnr 0e9a ty5 material. The length and radius of eac 9pe/ -,0rig5htfwyr h3h ana-h 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;.drb r b ne j0gi90cy:jrav:, connected to a battery in the following way: “Two resistors are connected in serier:yrnbaed c.i;9 gr 0:j0jvb,s. 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 accompanying circuit diagram has internal90nduh el -m4(eey9d r resistance 10.0 kW and the -(nmdlu9 0eh4ee y9dr ammeter has internal 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 xtuzbr9cbi+y(7a:2 : usuj-g right. The three bulbs 1, 2, and 3 - represented as resistors in thb9j t:g +x:u2az7(r-si yucbue 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 current in all 1)h zc;0ik8on-c 0npobori.xyxin 7ey3nh5/ three resistors is equal, which of the following statements must be tru1/07ir8xpi). c yno-5kn o;hehyn0nbx io3cze?


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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 cor.,qkwyi8f) g - h jn8-jcwn-bmposed of 5 identical light bulbs and 2 flashlight -wq8nr -fc.)ygwknb8j hj i,-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 NOT true concerning the simple circ:sdy/ee zy3eda.6ec 8 uit shown where resistors R1, R2 and R3 are have equal resistances? zdec .a6/3e e8sd:eyy


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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. z r)8wkyj pdwf;abu pgb:*+/: 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 the8k:wwb a dy *)p fj:/ru+;bzgp 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 through the identified resisto/junn7 t r 1jvjq)+ml2r in 5 seconds mvt uj2rj+7/ln q) nj1once the 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 jb y gd.(ap9ke r )nr3j, n8dn. nq(lt.bn5aj6simple circuit have the same resistance, which wotj3n.gbrka.8 np9e (5dnnjad ). n,( 6jyqlrb uld 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 6.0 v(n4o k/ 6 yvcs.avav7o9 l+v*woypp3Ω resistor is 1.0 A. What is the power supply voltage V?3k6o yocva/p vwn9.y7v voa(4*+splv


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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 abwln2 n3jx +c525(lx nym .yybre 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 ol35 5(yx+x myyl22 nbbn .wnjcf 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 andnso* (x.akb ,6(kccm hR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. hcko(,sn x6 *km.(acbWhat 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. What is the/px81 oy1beue ri *sf,xhpj9t (0qh1z maximum value of the cobx9h q1,i*1zr pfsx1/heueyt(8j p0urrent 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 lid3dy 3qcx rtk7 2v,0,hcb)u ljghtbulb designed to operate at 120 q tj,,bc0y)7vl2r ch3 3 ddkuxvolts?

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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 ohc++)iijyf: cs/su 2lf m resistor that is dissipating 36 watts of powlci s i+c)2sf:juy/f+ er?

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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 )ux7 fd,dkwjpo xl nc87(9n*b +as5ntis marked "120 volt, 600 watt.” In normal use, tnanl7skpc9)*d xw5b( j+x nof u,7 8dthe 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 fok; a4iov4tn*87dq wlollowing resistances could NOT be produced by a circuit containing only three identical 6td4av;qw l4 o8kn i*o7Ω 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:mf:gp k* ddzr sqz*b(4k+h .n. Which of the following equivalent resistances CANNOT be produced using all thr*k(knrp4 hdbsgm +q . zdf*z::ee 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 o4ofwtas: c, m.f different values 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 produs,o.4:mfw catced?

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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 iy+*-wnw n4o fps connected to a battery, a total power P is dissipated in the circuit. Honw+nfp* yw-4ow much total power is dissipated 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 resistance Ro9jtuwsh4 g4)uinz kl;i/ 3i11 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Whinit9 zui)o s4lkguh/j ;w13i 4ch of the following 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 desi5zp+ec5k / .y iqns5lqgned such that it has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of tim+c q55zk/n.eipy sql5 e 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 throu. tz ,m8jbrl8 7sl7dbugh a 4 ohm resistor that is dissipating 36 wattju 778s,8bml .b rltdzs 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 heat c/ i2y1xmdi trn /0q8v63;/pnrdcmh 07qx qhjer draws 13 amperes of current when connected to 120 volts. If the price of electi jitdh p0mcqx10m 6;cqn8xhv/rn/7ry23d /q ricity 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 hobcucigb1x*. b *q;x /ow much would it cost to keep a 100W lightbulb lit continuously for 1 year abub1/b *x;qo i.*cgcxt 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 a4w(ncsuruep d8a io-7. (zi9l lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance -.e7(r9idpno suwz (8u4lca iof 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 n ,msh7lmzk5* owns a computer rated at 500 watts in a 120 V circuit. If all computers are pluggedm ms5hk7, znl* 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 toi+hcc0,g pbc0-z/6gds*2buq oj z9w qo*vs6f four resistors to form a simple circuit as sho 0hi2gq/6bgobfd-9 * cqvop*+cu j ,zsc0sw6 zwn to 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 jjfazrgm.2-1 wj9 dt/eyh5d+ to four resistors to form a simple circuit as shown to the righf yw m 52j+1 dt.-ae/9hdjzrgjt.
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:eybjq4io voqz*6 (9a7 jogw)w9l l)w ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter rea:o6 4b9l*oqq)7jy a lw 9 (vwjgw)ioezds 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 le/3uys6 yow/ are connected a3 uey6 slyo/w/s shown. With 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 8x(tp./it2ifto+( y gjog,z d ideal ammeter, a switch and three resistors are connected as shown. With the switchp8(it xyoft+o.,gd( 2igj/ zt 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 r9.: rgdysigo a70 (uzbesistance? Ag dzs a urb:gi(.y9o07ssume 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 vpl))qyn33j w right with resistancjylnq)3 p v)3wes $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 *0hqgl v6c wp1j -t:hcin a combination series and parallel circuit tt 1hc:glj*0wp6h-q v co 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 cbw4qu;-hq3o shows five identical resistors connected in a combination series and parallel circc;qouw - bh3q4uit 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. Which bulf06 z hnda-ss *6msvy1b will sna *y6hds1 6mvz s0f-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 switch and three resistorsz0r ak(20o cco are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 am0roak0o2(c czperes.
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 ammet r2/ hkz)8tv:gbb v*dfer, a switch and three resistors are connected as shown. With the swi b:)hbgtvz2vkr *f/8d tch 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, a switch and three resistors are co n81uykc x(s(bnnected as shown. With the switch open as shown in the diagram the ammeter read(c8yn u(x1ks bs 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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