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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 currentk8 g+j 0jc(pvz6r,u / gcp2uce exists in 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 elect,j/(p +jpu2z 0ckgge6c8curvric 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 paralg39ptj9gxoekd;aj 4 2vvv2*dlel, the_________each resistokpdxedv9j 4ja; gg 23v2vt* 9or 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 filament wire of a lightbulb cf v.dqi:ug/;d auses the filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This happens beca i/.v;dgu:fq duse

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 replaced with LEDs. LED 4 padou85*l yais the acronym for which one of the following cho aa5o *l48updyices?

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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-squ3k*s)h ,s,. tbg:.mbyx pok ectional 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. obh)uxqt ., g*,ymssk3: pb.k 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 oju/pjzw tv33 1f the same material. Wire II has twice the diameter andzjvut1j / 33wp 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 diameter and halfanzy/q4vag wm( 40 engl3y g:ff: 8ck8 the length of wire X. If wire X has a resistvely(g0nn mk::4ca fa4gz qgfyw 8/83ance 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 v+.wdpr9 c*ig5zf 2fj;itpxiqco/ 23resistor 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/2 i9icxdjvrci5p* f;2 fq.3 pgt owz+ to the resistance of this material because 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 lim*) kt bzpx*ae34v 8usght bulb. He decides to modify the filament. How should the filament of a lightbulzbv3a *xke)4pms8u* t b be modified in order to make the 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 resistop u )nk7tdbanp;b98; brs are made of the same material. The length and radius of each resistbn8 nbt7) ud9a ;pbpk;or 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, e -1k,uold as4)b tr:gbach 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 the equivalent rbus go)ba:t, 1k4 dl-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; f-wwiy8g5 wxqz r98y resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter w qi-f 58 r9wxg8wzyy;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 cieugv1lwv x+ ear, 42,;ynme2vny).xompound circuit shown to the right. The three bulbs 1, 2, and 3 - represented as resistors in yv42w2ue ni a )vl+ ,n;xe,r1egym.x vthe 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. I tc9fza -lm**ef the current in all three resistors is equal, which of the following statements must bcz e-*lfa 9tm*e 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 electri ujy1v44dqzt:c circuit composed of 5 identical light bulbs and 2 flashlight cells. Whic 41z tjy:4quvdh 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 t 7l.l m ma a9(.dr6lvyehq0ls:rue concerning the simple circuit shown where resistors R1, R2 and R3 are have equa( m:h9.ad lv 0 e6las7lyqm.lrl resistances?

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 andY are connected in seriesr-z.wus g(l/ m to a battery. 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 .-swu m/(rglz 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 qb s59kzo/:w-+ prkputhrough the identified resistor in 5 seconds once the s-prk/5uz9pbo+k w :q 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 followinhbys8nrv6.lg-wt,,q g simple circuit have the same resistance, vs8 6gnwbl,rt ,-yq.hwhich would dissipate the 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 circuit diagram pcr0;; ffr1gl b 6-nx nj1qauy)f)j8m, the current through the 6.0 Ω resistor is 1.0 A. What is -81jr6cffn y b1pqnja;gru)lx0 f);m 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 batta f+c0tyr)g9h7s812wd5l8ai v np th5dxlp1mery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipates 6.0 W of power. +l1ahiw95t 1 psc2r)avyfgxm5pt0n 8dl87 hdWhat 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 confcc/yy,j v7e4qhbv 71nected in parallel to a battery. Suppose R1 has 2V 7v f4qyjb1e7,/vccyhacross it, R2 = 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 thnb 7 dk:,icv,n hxnikep/.*9ye maximum value *k 7n.,eib /phix9yck nv,n d:of the current 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 lighmk19m 66 ,(oupl mmizbtbulb designed to operate at 120 6m (6m,ump mz1lok 9bivolts?

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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 -cj 8qoww5jq6z*ci +bthat is dissipating 36 watts of powerwojci*cq5-wb+ 6 zqj 8?

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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 ikgyw5/1qfe,q42w 9 3+dkoket gpn8uvron used to press clothes is marked "120 volt, 600 watt.” In normal use, the current 8p g24o/enkvdu kfw+w9,qq3e tyk 51 gin 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 resistmbn;f -az/g (xe xbu8if 8*6anances could NOT be produced by a circuit containin a- *;fabnx z( 8nx8/g6bmfiueg 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 1.0 Ω resistors. Which of the following ezb 3 hu5) hzs10v*ghmuquivalent resistances CANNOT be produced using *v 0uhhzmg 153hs)buzall 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 diffe 78uiheat8ms(rent values can be connected together in different configurations. If all three resistors are used in a circuit, how aies7hmu 88(t 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 battery, ad+zz) sva57inr,ay;y8 9d bdt total power P is dissipated in the circuit. How much to8tsndd)a;iry,b + zy zd75a9 vtal 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+ls ,5txskbpx y*8g;b and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . ;b5+txk,*px 8 bgylss 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 r ) m +4t;fpmqtgu4s8lkx7zh- miof 4s:2elb c:esistance of 12Ω when operating at 120 v e4s flgkxlz) 4sobh2tq t:;8umm+:4c-fp i7molts. 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 resistor that is dissipating 36 waw8uz2pfb:yf7ayp( l /tts of powerpyz/7:8 (ab uw pylff2?

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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 amugv1 -.0kp*(rqnls;q6 n .wzj wfw d-ay*- zfiperes of current when connected to 120 volts. If the pr vn.a0.(u*g-ldjp 1wfzw - nkzr 6-i ;yfq*wqsice 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 cost to keep a 100W lightbulb lit 7jkfu2 k(l6 z( mz7cdocontinuously for 1 year at a ratek c( l fkjmu2o776zd(z 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 t7f: m rxs7j wcb5plx:0hrough a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the foll5mlfx xrs :p7 jw0c7b:owing 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 ro)anb s*4*kf a family of six owns a computer rated at 500 watts in a 120 V circuit. If all comput*nfr ob*4sa) kers 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 battery2rohd9- * pv8iyiol.,bk2 tdb is connected to four resistors to form a simple circuit as shown to the p tb2h*d-bv2r ,yolo.i8dki 9right.
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 connece0v 3neezs35pr l b;ibp /w63f/i6befted to four resistors to form a simple circuit as shown to the rs3i/;blp3 i p630wz eenbvffe/reb 5 6ight.
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 and three ressym/b )p ;mklfgd,7)axl9 9w:7 u jmobistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0/j aguw s9bold7x,l;f7m9b )k):ymmp 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 etm12dv941jv d72hqopfpb xv z;( mish/(3mcthree resistors are connected as shown. With the switch open as shown in the diagram the ammete2ov/b3ez; tmvh7f jdiphxmm(cdq s2p1v4( 91r 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 swtkd0a by g8078xa nn*mitch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes.0a 7atndb8 n*y8xgk0m
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 e)wrj*ejn q pbbyg8f0j4 cswpyu(79)j kz2 a9+quivalent resistance? Assume that all wires are s 2wyan*j)kf9rpj)y b 9j 84p(+e 0ubz7wjgqcideal, 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 ,fiqa:e;kfxk+ ) ;k dh,rbmd+right with resistan, +bedk+,;dx i)kfmf;qrh ka: ces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 lg7rila( iys1s zf10,gwm)2nyc3h1u five identical resistors connected in a combination series and parallel circuit 2nmyls1ihig11r c7y(,s3 wz fg l)0uato 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 reswd f c2d g21iafg9:bd83lvbx ,istors connected in a combination series and parallel circuit to a fdcd,1g g2l3xv2 bfb98a id:wvoltage 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, atsg tb7) y mrcdd)162yll of the bulbs are identical. Which bulb will be the brit ygs62) yt7rmd b)1cdghtest?

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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 ide; 7g ii+-c ;ua7zdli1uri bp43g bsbk-al ammeter, a switch and three resistors are connected as shown. With the switch open d14ab3bpuckblggizsi7;- -; +7riiu 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 a y m:xzhd8cxq8;4jyu1 +,oowsmmeter, a switch and three resistors are connected as shown. With the switch open y1zsuj,8ohdq xw8 :4 oy+c;mx 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,8m :hfrbyi e.7w2ae ;y an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 y.8w7ir be;h2e :f mayamperes.
When the switch is closed, what would be the current in the circuit?

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姓名:游客(未登录)

总分:50分及格:30分时间:不限时

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当前第题，此次习题练习共有 50 道题

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