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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 insn op; ax3v2c et./nu657nfr b the metal resistor 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 electricxnbesn5toufrc;a/37n6p 2v. 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______dynhpoej vqg- v: 339z-jycjew (;33 i___each resistor is thjyhv(p;zj:g 3deqe3-i v -ocwy933nje 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 ofa/,i c+v vkayz h:.bl. a lightbulb causes the filament to become white hot, while the v/,abz:ic v.k . +halylarger 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 lighcp;yvlq( 7 +ee i*6tal2h)nge-8m qadts are being replaced with LEDs. LED is the acronym for which one of theyl;le8 v2 caqm*ndq age7 t+( -6)ihep 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-sectfo9-yz w*sl7y f.*a nq4ov3y eional area A. It is to be placevo4y9 sa*n*ywe ffl 37o-. qzyd 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 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 has twice then/erc+z2h y+u/j ;nu:pag, lp diameter and twice the length of I. If I has resistance R, gyn+r e;uj 2uc,:p panlz /+h/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 hafzlex jp60:6 ts twice the diameter and half the length of wire X. Ij6p: 06 txelfzf 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 resisto wmt*dts61cu2g3 t4y:)lneu1 byn c+br 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 becs31e 1t y46ucd2bn t*t:b)ny+wlucmgause 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 to nilufk12+ zw5 modify5z+f1 l2un kiw 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 materizi 1qv ;a q.d/cb12o du+3baegal. The length and radius of eauez 2q qiga;bda1b3/o 1v.+ dcch 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, each2g-r5np eq q8b 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. This set of three resistors is connected in series to a fourth resistor.” What is-erb pq2ng5q8 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 cirl9druhif+*f 6 * 0mpck px8tf4cuit diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.0f6 **f ppmcdhr+t84fxkli u090 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 qgcq o v.gzf;h8vc9e /xo +/q;shown to the right. The three bulbs 1, 2, and 3 - represented as resistors inx ec.oq/ zho9cqg+8; ;gqvf /v 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. I5z) kl:l1v i/:hsh ejdf the current in all three resistors is v5ls/jdh1 ):l eizkh: equal, which 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 cir v je6n;qx9bb1cuit composed of 5 identicabenq1 j;b vx69l light 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 NOT true concerning tk/4dc7l z;no+t4mo c xp g(pg3he simple circuit shown where resistors R1, R2 and R3 ng lm 4;t3xdpoz 7g/o k(+4pccare 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 con7/r lgk o nzm410re9zp 07ggobnected in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY prbr 7gooznze/9k0ggl7 04m 1 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 coulombs will pass through the identified resisto0p9fa bx8q+t7aydfqmx)f r )7-xb4qdr in 5 seconds once the circuit was cx+bdq4xr8xp9b-0)mta f7f y7a )qdqf losed?


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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 circuirj a:13k l8h t+m 8jiq/o jx8xchfom80t have the same resistance, which would di /8:xh hic88 k+f1jx 3tmo0a8jlq ormjssipate 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 curreihx s 1,f -l2p*cxo g8on7thy-nt through the 6.0 Ω resistor is 1ycxs,t-hfox gh*ip1l 8o n7-2.0 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 toc.ztrcoiz m z8:0 bu59j buyg0-+-yqz a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipates 6.0 W of power. What -y cy009rzcm+zbzuo u j:8tgz- b.5qiis 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 connecj/e6s3 i1n a2mocv*u*w mah,h ted in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What is the oeh*hc a*i 13u s26njvwma,m/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 they jrky1)uy+m:1u rmrm) 2*ujt maximum value of the cu+u1y j)1y*mr)rj :tkmmu r 2yurrent 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 designed to opeb) bhbi ep1jh t/pb;.1rate at 120 j.1ppe;b/bhthb )i 1b volts?

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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 dissipatingm13o e:e8n4*0)hqjz l je4ff q3rkmnw 36 watts of power4 8jnlmemrq)f 3hje4k0:w31qz f*o ne ?

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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 2s)oa ,iz8,fvh dw js-press clothes is marked "120 volt, 600 watt.” In normal use, the current in it a-s wi,8j shf dv)z,o2is

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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 NOT be produced by a circo7 b2j35+dzqzm:p m bbuit containing only three odb3pj52 zb+mm7qbz: 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 1w0o.5kp(7 zht2tfttpn- 3 ggj y(rc othree 1.0 Ω resistors. Which of the following equivalent rtf.tg(yh c(17 op k tp5oztn- wj0r3g2esistances CANNOT be produced 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 together in diffe: 8ocjfp r(bi-rent configurations. If all three resistors are used in a circuit, how many different values of total resistancrbjo:-(8fp i ce 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 connec u,2(ivvy5iy q,zwjc, ted 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 samz q (,ivuy,2,j5vwycie 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 R1 and R2, are connected in paral mci 3pb/nz/-8 xoboei--ac(r lel, the equivalent resistance of the combination is 5Ω . Which of the followe-- pbx-ib/car z(moc/38on iing 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 f 8-uyn3nz(b xng,fl)1d9c7 mch7 toethat it has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it woulm )ncgefh ,9(doc7x nn8u3-z7fltb1 yd 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 thr a9hdvu8-r;se)o .kybough a 4 ohm resistor that is dissipating 36 watts ok; 9sb hv)ou-d8y.aerf 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 draws 13 amperes of current when con,ys)d f,94k uuubudj) 8, kaonnected to 120 volts. If the price of electricity)4 b,,8 dod9unk,yfuak s)uuj 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 /lg,1ba i x7vmit cost to keep a 100W lightbulb lit continuously for 1 x/ 7vagb li,m1year 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 resub*liep782j s elts in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of eil8e2pj * 7bsthe 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 sh dpsrs fe8uqc(.5z* j0v*x 8a computer rated at 500 watts in a 120 V circuit. If all computers are plugged int5 0vu8zf drxqspss.je(*h8*c o 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 resistorsly ue9xl2lf5 9w92sv m to form a simple circuit as show2fv9xlwm9yles 9 l52u n 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). yt9w)bup; cl)oouz connected to four resistors to form a simple circuit ayc 9z)lou )pto; w.u)bs shown 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, a switch andr(* d::vr e ggf 7,,szrqya8f-u wftw6 three resistors are connected au ,6a:: f7v-w, *reysw gtrr(fq fd8zgs 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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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.22: An ideal batteryj,fw7m n vtlg)7qwkt 4yd0)kl x/(a.y, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown(7ql.,)kw47xja ny tywv/m d tkl )gf0 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 batterqifqs/vx sl. u4(t 1aso0ib,3 y, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram thsxvi.b s,1i(qat04/f o u l3qse 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 /+vg7xcwia6ew2y8*gv7h3 jq bgz f/i shown to the right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no interna7vvhxfzc68wb wyi3q2a/gj g *g+/i7el 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 right with mf6ql0uef .yz 6 g 9f9:d0:q6ipowrnv resistancegf ni6 yrp:ldz6u m.6q:v 9eo0ffq09ws $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 resist ;iq.z fjc)df 8pw:(rwors connected in a combination series and paralle:c qp8idf wr().zwjf;l 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 cjjne;7-idut rg5.z2pr(2 qom onnected in a combination series and parallel circuit to a voltage sourou( n ji27 dqzrmg tj2;5rp.e-ce.
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, f11gvvr+ syikp 9- f(yg/j; md all of the bulbs are identical. Which bulb rkgm( j-pf+d1gyi;v19 fv/y swill 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 switbrqp38yz w,n gt:03n fch and three resistors are connected as shown. With the switch open as shown in pwqnn8 3:3tf g0yr,zb 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 x .v:ubbn9 g2hpf5lqx,,iz 7p three resistors are connected as shown. With the switch open as shown in the diagram the ammeter ,:n xp2 ,qulf.5vbhigzb7 xp9reads 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 three2uff9 uo *q8lzx0 bu(33fi zbq resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperzo(3l8 qfbz0 fixq32 uu f9*bues.
When the switch is closed, what would be the current in the circuit?


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