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?作业考试练习?美国物理杯赛(Physics Bowl)?.Resistor.

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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

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 cusu52z ,dk6br bz7u.q prrent exists in the metal resistor connected to the battery. Which one of the following choices best describes the direction of eld67krbz5s,uq b. 2zu pectron 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 arei.66swwo9 toe connected in parallel, the_________each resistor is thiosoew96wt .6e 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 p 7 we6f4 uiizf/7mv/qa lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much ci w /6ezfi/qv477mp fuooler. This happens because

A. the larger connecting wires have more resistance than the filament.

B. the thin filament has more resistance than the larger connecting wires.

C. the filament wire is not insulated.

D. the current in the filament is greater than that through the connecting wires.

E. the current in the filament is less than that through the connecting wires.

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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 replfc8k) 6uzs.jl aced with LEDs. LED is the acronym for wzu.c6l ks 8)fjhich 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 ani8r q zpbdl0(k;0u, qtd cross-sectional area A. It is to be placed intt pb80(lrqzi,d;uq0 ko 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 tyu/qu:4o fr i*j d)k)oa0ln i.he same material. Wire II has twice the diameter and twice the length of I. If I hasqkodoiu:)4r)/f lnj a0*u iy. 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 diameter anh8-wdnca*hi8 f8psur4 hup7 /d half the length of wire X. If wire X has a resistance of R then wire 8* f8/uh 74 c-pa dhnsirhpwu8Y 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 radiusu5a 6z3u7decp 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 becau7 d 3cuuea5z6pse of this process?

A. the resistance is quartered.

B. the resistance is halved.

C. the resistance is unchanged.

D. the resistance is doubled.

E. the resistance is quadrupled.

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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 81ry8po)1byhdjdz- n, urz z7. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make th z1,7yuy - 8hbjzd8dz ro1pnr)e lightbulb produce more light at a given voltage?

A. Increase the resistivity only.

B. Increase the diameter only.

C. Decrease the diameter only.

D. Decrease the diameter and increase the resistivity.

E. Increase the length only.

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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 materialfnc rnq7 qzob,:sd+(:. The length and radius of each re,o(sz7qb:q +fdc:n rn sistor 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 c ihb 1quk2fv/7onnected 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 r7kuvi /bf 2h1qesistors 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 internal rela,. er3z6 zxz.we3 o1 hqtdo4sistance 10.0 kW and the ammeter has internal resistanzt ea, r.4qodz1h3 zx.6lwe 3oce 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 bh er*s,pb-lh 1:j d cdlbyp7jc :.c*4compound circuit shown to the right. The three bulbs 1, 2, and 3 - represented as d:b:h.r l4b,c dcl1 p-* bjyc*phs e7jresistors in 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 rigx()9jdd.+cjvf3 .fjk spvjf)ht. If the current in all three resistors is equal, which o)j dp+ k.jj cj f9).3fvxsv(dff the following statements must be true?

A. $X, Y, $and $Z$all have equal resistance

B. $X$ and$Y$ have equal resistance

C. $X$ and$Y$ added together have the same resistance as $Z$

D. $X$ and$Y$ each have more resistance than $Z$

E. none of the above 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 electrickp-*;98wx:j sn vtr t60d1 ojw22oidpemk x p+ circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bulb (or bulw*1p rdovejx9p tm8;w-i6ko+ s0 px:njk22t dbs)
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+ijm3x n90qhz true concerning the simple circuit shown where resistors R1, R2 and R3 are have equal rq +xzm93hn i0jesistances?

A. the largest current will pass through R1

B. the voltage across R2 is 5 volts

C. the power dissipated in R3 could be 10 watts

D. if R2 were to burnout, current would still flow through both R1 and R3

E. the net resistance of the circuit is less than R1

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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 and p wk6qf40w+m p8k2woj .ssci)Y are connected in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. s) pj p8wsmkwo+q6 .4if2wc0kIf 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 coulombs will pasl +c,q6v;eba:txco9 e6,g z cgs through the identified resistor in 5 seconds on9ocav lz6,e;g+ 6 bx,cceg:q tce 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 reseh;ohrn 548eg istors in the following simple circuit have the same resistance, which would dissipate ge 4h nrheo;85the greatest power?

A. resistor A

B. resistor B

C. resistor C

D. resistor D

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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 cir(xks *f/c4 hysam-s(gcuit diagram, the current through the 6.0 Ω resistor is 1.0 A. What is the power suppl*x-4s y am /fskscg((hy 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 jit2dm(*e3n i 2s2*gtvy:m v dt )0lcsn3uuo*a battery. Suppose R1 carries a current of 2.0 mn*v myv*ncidil302uegs2sjuo)(tdt *23 :t 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, R24ove r ;a1d+ - q0.eiq yt(q8kaymrp3t andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 30ryy kqq atme8-ip;do+.ea t(q1 4vr 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 coip) pgd5 n 2b38vgn0dmgl is rated 1200 watts and 120 volts. What is the maximum value of the current undebpggd8)n0m2v g5d3n pr 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 op/1ih+6 dd;iwzzf 9xp, fz0ck qerate at 120 /w+9c dz06i k1hx d;z,p qffzivolts?

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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 dio 3;z0bpd xj2mssipating 36 watts ofx 2;3m objpdz0 power?

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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 irivjab85 h.9 brk2 xjr*on used to press clothes is marked "120 volt, 600 watt.” In no2a8 hbxvb k j5jri*.9rrmal 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 resispet 4)-r yl1l phl)cs/tances could NOT be produced by a circuit containing only sr /plh ll)4e)t- c1pythree 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 1.0 Ω resistors. Which of hlm)c.:(7 zm gpl8haf the following equivalent resistances CANNOT be produced usingz()lh:gpml8fh am c7. 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 w1m pt7zkrn) 6s*xw2 vof different values can be connected together in different configurations. If all three resistors are 6 *)t71 rpkm wxvws2znused in a circuit, 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 connected to a battus4 appa0 bg 2gyjq.(,6 9ryxzery, a total power P is dissipated in the cira z96 syj4ugry ,p0 q(xgb2.pacuit. 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, having resistance R1 and R2, are connected i4u; wi3-,bta6aobv /x2 +vc:jlpgtfr n parallel, the equivalent resistance of the combination is 5pwiav3;fuc/b6bt o l42,-+ gxj vt r:aΩ . Which of the following statements about the resistances is correct?

A. Both R1 and R2 are greater than 5Ω .

B. Both R1 and R2 are equal to 5Ω .

C. Both R1 and R2 are less than 5Ω .

D. The sum of R1 and R2 is 5Ω .

E. One of the resistances is greater than 5 W, one of the resistances is less than 5 W.

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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 when ni7cc v;w o *uke9hqio/p7.;l operating at 120 volts. What is the minimum amount of time thatpu 9io ;7k l;.n*qc /iwve7ohc 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 resistor that is,z u.k:i8 uf,uv9 rhqg /z6mrm dissipating 36 watt8ruh,q.u iru /:km 69mzv, zgfs 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 heater draws 13 amperes of current when connec bdv0hbdgove68aykp26.o87c ted to 120 voltc7yk8.hvg8 a6o0ebbdo6dv2 ps. If the price 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 l(q 0)laqd0 1p 4luaybcost to keep a 100W lightbulb lit continuously for 1 year a)d40q ylba(q1 0ulal pt 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 results in a po-lpklxx.8 u,.3n,wuq .. jo dkh.tbgtwer of 24.0 W associated with.,kd8b p.xno w,jtkt-llh u.. u3 g.xq the bulb. 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 watts iq5ykisib -8; pn a 120 V cir ;y 8ibsqp-k5icuit. If all computers 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 connect jr5 g2yv6sni,ed to four resistors to form a simple circuit as 5jg6 rn,visy2 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 form a simple cirl17y wxi,71dksh6 urmcuit as shown to the righwhrlim ,dx67 7 1s1ukyt.
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 ideaoc +r6jrsq4 3f*f+nuisc3 j0syylt0k/,xsw 5l ammeter, a switch and three resistors are conne ry+ q3+ 5 0ls6f3jxyn4tssu/c, i0srofkjwc*cted as 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 battery, an ideal amwuy8n-i t8c*usn/1k smeter, a switch and three resistors are connected as shown. With the swiwsis1ct8 8-yu/k nn u*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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42#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

02.23: An ideal batter tu2m;dg+ fjl(35ajsn q )wl5zy, an ideal ammeter, a switch and three resistors are connected as shown. With the switch ojd5lunt ja2szg;35fqw(l)+ mpen 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 show6dw p6wq9oz 6ln to the right, what is the equivalent resistance? Assume that all wires are ideal, the battery hasl 6q 9owd6z6wp 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 right withw sv /7s,idnt.hv vq)7 resisit, wsn.7dvv/h)7 qvs tances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 iguixcud g4+.7 yqnh;(n a combination series and parallnqcx+u .digh ;y(47guel 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 res gtca55q60jbdw8hje:k jh71m istors connected in a combination series and parallel cir5jm b et hdj16gc 5j0h7a8qw:kcuit 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 identf)gm :jqy //stical. Which bulb will be the)fs/m gqt j:y/ 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 resig4ur8ws.m/5n mzzm y3stors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 sznw3mm/y m4r8 zgu.5 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 andtbcr/el2d- omr19m c - three resistors are connected as shown. With the m mcltco/2r19- r b-edswitch 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 anacpm43d.6xk agiwy0 +rjp m-*4is.pw d three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2k.d+pyp-6 .iwmaa4s0igjcxr *4 m3p w.0 amperes.
When the switch is closed, what would be the current in the circuit?

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