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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 6e 1zpf3yjwwjwhyw2;5n/ 5k ein the metal resistor connected to the battery. Which one of the following choices best describes the direction of electreyjw3z/5ek5p 1 wwyhf w;2 6njon 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 fourq+d ho-b)nh rv z:,2ku resistors are connected in parallel, the_________each resistor is boh -rkh,q2+:zdvn)u 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 /f 4 .7feb14imahn9ujcqcs4dthe filament to become white hotij44e s d a14u m.9/nqfcbc7hf, while 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 li( jyt 5sjx03bgghts are being replaced with LEDs. LED is the acronym fojjxb5s y 3(gt0r which 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 resistor has length L and cross-sectional 9ep xs0 iv7hgd:nh1w hxmm19 cdzf6le+x9 ;,farea A. It is to be placed into a circuit, but it first must be cut in half so that the new lex mhcvx,9x p 9h zsl0n1dfif7w6e;e d+:1hmg9 ngth 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 hastn. z:zxu +h9w twice the diameter and twice the length of I. xz9hw utz.n +: 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 twv1vrg+f.l)-deyo e( tice the diameter and half the length of wire X. If (e)v-y .oel 1vrt d+fgwire 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 rkdu39vlfosf70)qzc4c67an ) i.vobuesistor 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 becauso.alovb4fn c 0q6v7u )f u)kdz7si39ce 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 wants to make a brighter light bulb. He decides a lvy,*3e n,vi9h2wutto modify the f923ivlvwy ,a,nhtue * ilament. 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 s( pop/:9gm/ dk: wbvyjame material. The length and radius of emk:gbpy/o:w p/ (9vdj ach 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 conl25v* rpu7d xvnected to a battery in the following way: “Two resistors are connected in series. This combination of two resistors is connected i 7*pv2u5v drlxn 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 dm-)j y:3eayjbkk-e *n iagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading -ye*yjkke n abj)m-: 3is 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 shndjtob,x*q 92own to the right. The three bulbs 1, 2, and 3 - represented as resistors in the diajbqdx, *9o n2tgram
- 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 a jk4m737;5xo1xwg)g s ixkrvct the right. If the current in all three resistors is equal, which of the following stm7vx5gs 1okijkg)7r4xcx w;3 atements 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 righi lzg ce))3v;ct represents a simple electric circuit composed of 5 identical light bulbs and 2 flashliil)ezgv 3 )c;cght 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 t7ig06jvka 5qtkjk,;1 bj 9fj lx(ktf:he simple circuit shown where resistors R1, R2 and R3 are have equal resistlj gfj k70k6at 1kjt,:kq(jx5;f9 ivb ances?


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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 xnxgy-53:e3c z au2smbattery. 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 same battery, which one of the x2cm 5eg3 y unxz:s3a-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 p bd9 0rcujcd0sgz c4m*ow+h zs*)bk,9ass through the identified resistor in 5 seconds once the ci*wzkdb+cc* 9 s ujsdg 4omrch )0b9z0,rcuit 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 res1k bkw(p rqm/5istors in the following simple circuit have the same resistance, which would dissipatep5rqm1wk/k b( 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 curren0tvzj ds9d(w; t through the 6.0 Ω resistor is 1.0 w s;d9vd0(tjzA. 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 R3m9 tu(0p5sv pi are connected in series to a battery. Suppoi5put 0s9v (mpse R1 carries a current of 2.0 A, R2 has 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 arez06rqywcz ar)+buw3 z+i1 r8;b7 ojsf connected in parallel to a battery. Suppose R1 has 2V across it, R2 of);z3z asbw71+ 08y+ uwqcr rz6ibjr= 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 ag2xbdbhp hnv*.r 1sc:r90d 1vnd 120 volts. What is the maximum value of the curreb9 hdd2g.csvh :11x*v r0pnrbnt 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 lightbulb designek7m8ihl (uk ,24tt rced to operate at 120 volts kt2mh7eirut8(k , c4l?

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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 m24 dm h-r sya7)eby cnm3-7dj4 ohm resistor that is dissipating 36 watts of pj3-47d d7 msymehbc-mr )2anyower?

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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 "120 volt, 600 watt.”we2u sb 5d 2ou+pjh:h; In e:s 2djbuo; 2p5hw+hunormal 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 resistances could Ng(: jm29-)bv j8 qaeecvkpgc1 OT be produced by a circuit contajk-b2vgg8vec: )j(me1c q9paining only three identical 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.: y8+w;ro wvue9 hhvy*0 Ω resistors. Which of the following equivalent resistances CANNOT be produced using all three u oe8w;w:vy9vy +hh*rresistors?

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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 e aa+-zj,i b3b3lmup c +stc,t08vs9;zf3m eu in different configurations. If all three resistors are used in a circj+bace ;z ,fiz9al-3tt8,uv +pm3m3 sc bseu0uit, 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 co 0 98gk eshx+vwgw+-rmnnected to a battery, a total power P is dissipated in + 0vegh-wm xsrw8 k9g+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 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, havmkiqzq0a6,: k ing resistance R1 and R2, are connected in parallel, the equivalekk im zq6a,q0:nt resistance of the combination is 5Ω . Which 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 designed such that it has a resistance of 1o2d;uq )(jl a 5.+cw6 fzvuvjtu 5bhu62Ω when operatinuuuq+ vc(j5j;6foawvt62 )bh z.5 uldg at 120 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 through a 4 ohm resi8 p, m67smsvbjstor that is dissipating 36 watts of power?j pm8sb 7,6vsm

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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 current when connect7( pehu yktr*w(,sfs 9ed to 120 volts. If the prices7uek *hy,(s(w 9 fprt 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 howb4k d*g4in7iuu( e*r pv8x*jdtmc6 9m much would it cost to keep a 100W lightbulb lit continuously for 1 year at a racj4n(*e*xk4igud b ru8 *d96 tvpmim7te 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 lightpz7 ot02vak s(u .az:tbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of the ligh7po0 z2a.:vt kztas(u tbulb?

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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 128oa 0y bjkvh eci.vu-,n9.r(t 0 V circuit. If all computers are plugged into a single circuit protected by a 20 ampere fuse, what is the maximum numbn,9(u.8tb.hcyvev orijak0 -er 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 fzc odeg66ie /x4pw/ i:mcf/4so yg,3aour resistors to form a simple circuit as showcx 3 /gaei4ydf/g o/4mzp6,6:sio ew cn 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 lvs4 9q 6g+yjp5*xvxex7r qt/ connected to four resistors to form a simple circuit as spxvq+e*st y6xlgq7 /x jr9v5 4hown 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,,k*7txz mikljr0 02k r an ideal ammeter, a switch and three resistors are connected as shown. *,2i kjkxr z0r0ml7kt 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 t zfpi 3o :nwsbr/ac/ 6.+a9rorhree resistors are connected as shown. With the switch open as shown in the diagram the amr+3w.pbnsor ao : ic/ar 9f6/zmeter 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 thc6.xnbp 0xz,j7cyzm - ree resistors are connected as shown. W b ,7xz0-ycm.pcjnx 6zith 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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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 :.f5q nyv.c nf90 nxbkis the equivalent resistance? Assume that all wires are ideal, the battery has no internal n.:b09vn.5xfkn yq cf 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 rightilqn.s1dp6w n)yt p (8*rvz b88kdw /n with resistancesb*wd k8tnrps.d n8 l in8(6wqz vp)y1/ $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 fky 9rz6,oy-xp7c1fk vive identical resistors connected in a combination seri ko x-ycrpyv9zk7,f 16es and parallel 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 connected in a ehvzda9 x97/)ie gc*tcombination series and parallel circuit to a vo 9gi ze/9axtec)d 7h*vltage 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 identi 7.ei(hh/k 9jn lodi(wk ;u0f0me6dodcal. Which bulb wik (owjdu9l dfhi n.md/0o7( kee;0h 6ill 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 resistors+zshu/msc;fc4w - 4 f*g:wm fe are connected amhscz-s+*e: f g;wf/u4cm4 wfs shown. 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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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 conlyqr,p7* .wrwiebq 3h6/iu n)nected asp*6qwil eb,)r7 u /3q. whirny 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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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 are3. a)ipp .r2p)x masv ,q0taoo connected as shown. Wimor )p taq0 ip2v,3.x.)pso aath 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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