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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 56 ;* p8aknld e;qm9rr mkhbn5m))wybmetal resistor connected to the battery. Which one of the following choices best describes the direction of electron flow through the resymblmwnre r*;k qka b556)9p8;hd nm)istor 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 in parallel, the_________each ressn.tbpz0m 1 97cxxlz9istczlxn t90. sx9p7mz 1bor 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 thrc- d9a1ehg20 yaz4aeeough the thin filament wire of a lightbulb causes the filament to become white hot, whilea4z 219 eyd0c-ea hgae the larger wires connected to the lightbulb 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 household lights are being replaced with LED8c4/ c.asaf n06sx wv,9raavds. LED is the acronym for which one of the following cha 8. xcsrswn9fv/a ac, 6d0va4oices?

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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 : ol -8/sltdwelength L and cross-sectional area A. It is to be placed into a circuit, but it first must8d:e /ll-twos 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 ar )(vz tjqn6dqh*v)j5e e made of the same material. Wire II has twice the diameter and twice the length of I. If I has* 5)()qeqjdzvtv6hn j 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 u;tze3 ) 9mim8wra5y fdiameter and half the leng3m8im9 a;ftwreuy5 z )th of 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 length L and radius r. This piece of mat*d.dzc7 ly*k v,cfn6(bpmpm 5erial is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of this material because of this pr p *.dnpz6bykc*v c5(dm,fl7mocess?

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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 Ediso : eu2lewxs0i*n wants to make a brighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb produce more light at a given vo uw2se0eix*l:ltage?


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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 q p0+leavu6g i*ot d*m 2mgdaa0a 4*2kthe same material. The length and radius of each resistor isld+a*p a 2d g0o*k6qi20veu4a gm*mta:
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, eachelof )iy1f 8,;fvxf5e of resistance R, are connected to a battery in the following way: “Two resistors are connected in series. This combination of two resise 5) y1vef, fo;f8xlfitors 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 vw1( +hc plj q2zo,ut)accompanying circuit diagram has internal resistance 10.0 kW and the ammeter has internal resis+)jw z1p,c t 2hqlo(uvtance 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 cok h9es5;1 mvo .slii1egcj dkv)k:56q9jofh/mpound circuit shown to the right. The three bulbs 1, 2, and 3 - represented as resistors in tl ojki 51m5qs16e; v)o:ve .di/s99jkfchgh khe 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 b((kja+ dq;p dacy4+rthe right. If the current in all three resistors is equal, which of the folloaq ;ydb+4(r pc(kj+a dwing 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 compol ;-29/m:oa hk ylytgbsed of 5 identical light bulbs and 2 flashlight cells. Which bulb (kl;h29a-y gm:y t/ lboor 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 circug(w:0iglns 7 lp0xi5x it shown where rgx5nlw: 70 pxi lg0(isesistors 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 conne+e*8* mffphcg cted in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected i+8hmf*g*f pecn 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 kpjsbv lp7(l7 22 mtd. through the identified resistor in 5 seconds once the circ .7l t2dl2(kpvjb7p smuit 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 6n 65pd6vn gqn(z)n yy following simple circuit have the same renny p6v5 qnndgz)6 (y6sistance, which 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 6.0 Ω resibl4a++ yqat pr48uld6stor is 4u+ypra8bqa+dt4 l 6l1.0 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 connected in series to a battery. S2ei;kx /s6wy ew t4fg* yi4s;fk/hw0 xuppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipates 6.0 W of power. Wh* wwf26fk/i/ktw sihxs0;g4 xe4; yeyat 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 zg n)kc y5bb7,to a battery. Suppose R1 has 2V across it, R25k, b)gzcnby7 = 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. What is the max(fp:qinm z 1)limum value of the current under th:p)nlq z1 (mifese 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 des. u yl)bu0qmplpmx.2*a. w9cm igned to operate at 120 vol wmluympm . ulb9).2*apq0 .xcts?

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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 rea-5fefcg4g xl 85mdqmny2swa) db457sistor that is dissipating 36 watts of powe)8y emn455gabwqs4f mdc7 2fl-axgd5r?

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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 "12 1n2v0b47lbecfh: l uw0 volt, 600 watt.” In normal use, the 2wb ce vf:0l4ulhnb71current 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 resistances could eoar03 q1u n 0g-+birwNOT be produced by a circuit containing only three identical 6Ω resistorour ni b ae-gq+1wr300s?

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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 equivalents -l3 u79mb 0brenej8g resistances CANNOT be produced using all three rebsbmj9e ge0n -l78ur3sistors?

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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 together in dxuqv8/n fv fmcd 4.;6pifferent configurations. If all three resistors are used in a circuit, how many different values o8vpv u 4n.;dqf6xmfc/f 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 connected to a battery, me8+a (6k +ltn-lzc btv+ck- ca total power P is dissipated in the circuit. How much total power lk v (e m-nb+taz8c+cl+6c-ktis 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 res;-z n8zyu cmhef7 1+bcistance R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following stateme;1bc+n uzy 8me-fch7znts 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 resistance of 12Ω mge73u1ev2af ls9a 8q when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.45vq9a78fu aee2s3l1 gm 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 dissipating 36 mj+t5t xc s:g3kaak),watts of power?c 5jas3tt:+g ) m,kxak

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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 cne0bp t ,t.xj6gbhyp 0*y1oz,urrent when connected to 120 volts. If the price of electricit ge txnyy.60zbp0 pbo*1 jht,,y 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 2 gb7z n8rmd/ xt*ib -0qrga8mit cost to keep a 100W lightbulb lit continuo*g8xb2/i-mrd8 a bz n70 mgqrtusly for 1 year 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 througho s0/,wv0)vb a6fkzk; zh)fn b a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choice anbff,hov)kz6 /z kvw0;0bs)s 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 watts in a 128n-wp g:8d9z:cthn fw0 V circuit. If all computers are plugged into a single circuit protected by a 20 ampern wdc9-hf8p nw: 8:zgte 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 f h ;mw6nlsv.m;our resistors to form a simple circuit asnw6sv ;h. m;ml shown 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 to four resistors to forj:h 6ahx3(kwzm a simple circuit as sh ahz(x6h3 wjk:own 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,q5h3t55 q8v gc6zc4 n eo1tvyv an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown1z4q3tccq6yt5 5 o5vhvge8v n 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 5( *xdf8cuvt xand three resistors are connected as shown. With the switch open as shown in 8 vt*xcudx( 5fthe 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,mv7t p/e+6p*qjoo tm, an ideal ammeter, a switch and three resistors are connected as shown. With the switjm o7 p*q /ovmte+6,tpch 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, whad930+/st 2j katbat m9l 7ftpit is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three ia+tbsja lk7f /d0t m9p3t29tresistors 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 se xcrr9e7fv6tp,3yz t;/q 3iy-8 lrve hown to the right with resistype93 q6i8,v3e rr7z ;f-e/rxclytvtances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 co k(3v bj jhmuc-8f4(ximbination series and parallel chiv c 3-x8fjmbu4k(( jircuit 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 i27 zhth10g/ gt ulhxy/dentical resistors connected in a combination series an71 xt lug02hhg/h/ tyzd 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 dia 7ufu4lr- yo-qgram, all of the bulbs are identical. Which bulb willu7-f4 r-luqo y 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 resi nh l576;xirddstors are connected as shown. With the switch open as shown in the diagram the7hn xdri 6ld5; 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 idealk( d3.,khw odr ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diakdr.,o k(h3 wdgram 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 ma3)yz4ss48ey9tv4gjt7 pvg ammeter, a switch and three resistors are connected as sy93 a y87es44gjtgm vs)zp4 vthown. 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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