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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 current exists in the metal req(ykw+sw dsw.;(,c bysistor connected to the battery. Which one of the following choices best describes the directi(s q. ywkcw;b, d+yws(on of electron 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 are connected in parallel, j8a p6ds:pa/q the_________each resistor is jd :p68qasap/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 az gf6b/i 3rrzz li;47g lightbulb causes the filament to become white hot, while the lzi4bz7z rfl;3rg 6g/iarger wires connected to the lightbulb remain much cooler. 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 replaced l/b k,b fd5cks,.5 xbpwith LEDs. LED is the acronym for which one of the following bd./flxbk spb5 k c5,,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 graph 71n q,5ekvwzyite resistor has length L and cross-sectional 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. What is the ratio of the new resistivity to the old resistivity ofykqe 1,75wzv n 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(t sz.y+24vueyaafq + II has twice the diameter and twice the length of I. (tyz+.e2 yqs avu +af4 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 hb k+h56eja jquwk(a. ;alf the length of wire X. If wire X has a resistance of R t+kajwe.k;q(5 b ahu 6jhen 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 z.evgdcm53tv-au *:pb/siz8 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 because of tev: vdct8u-s*p5 miz ag .b3z/his 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 maa k0 4mbipdcc37w+d;6m aqp9 ake 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 ac07bkmdwaaci 96a3d+ 4;p qmp 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 cylindriczak -:ye5kbwm-a( t/k:bat/ xpi y*y 0al resistors are made of the same material. The length and radius ofy(m:t5byek/pak akb:iy*0-- zatx/w each 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 o *fwkv21ec7m krhipun w,7/+lf 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 resistlrfhce +mu vk1 ipw72,7*kn/w ors 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 a 1 .tddo33a21s:g aegid m fe6x7kyy*nccompanying circuit diagram has internal resistance 10.0 kW and the ammeter has internal resis16 xdad71 g*ya2dyfm:gks neo i3.e3ttance 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 compound circuit shown to the right. /ftxe8-u7q nzpq zf 2p )0m st.o)uus5The three bulbs 1, 2, and 3 - represented as resz)os z./ pn7fp8ut52mq uue) 0xs qft-istors 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 rightk iudw26axh 7+0;dtm,hvh *ue. If the current in all three resistors is equal, which of the following stat2ih eth;u,a uh 0kx*mvd dw76+ements 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 electric circuit compos28d ss+d s+jzged of 5 identicas+2s+jd8dg sz l 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 follow8kh0ravp kmv)9. 7 yeking statements is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 are have .)krpk7yva h8k90vm e equal 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 series to a battery. Bulb X is ,7a;jazinknc5p6m z a4h)kw- brighter than bulb Y. Assume all circuit wp ajzannc 7)hk;k 5a64m,iz-elements are ideal. If 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 pass through the identified res ,lvc6yjjf20:pz mw. zistor in 5 seconds onml .0,jfzwv p6y :z2jcce 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 resistors in the followingm jb8aj2i1kb ae;7 ih- simple circuit have the same resis2e1 abijk7;bi8-mhajtance, which 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, the currvoayz8zq8 yfvs:1v 2*ent through the 6.0 Ω resistor is 1.0 A. Wh81zz8:*ov2yv qv safyat 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. : p(11hx xuwaoqu:9nzSuppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 disqux za(1xpou:wnh9 :1sipates 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 are connected im3fg e9jg :;+owxqxr0y (jvr2n parallel to a battery. Suppos:gg+23 rvx q;eym09fr(jjoxw e R1 has 2V across 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 12jx5x hn,9j .nw8 9 w*ovqc5- j:- pssbx/zbzhk00 watts and 120 volts. What is the maximum value of the current under these csj:b5nj9czzxxqv8o wj- 5h h-kw pn9x*b,./sonditions?

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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 ligh0mgzs- s7g-m ctbulb designed to operate at 120 volts-0m-szg m7cgs?

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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 flowsnn p2vv) /,lrl through a 4 ohm resistor that is dissipating 36 wat/nvvn p 2rll,)ts of 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 iron used to press 2oa g,ig 30sfpclothes is marked "120 volt, 600 watt.” In normal use, the current in it0asp2gifg3, o 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 resistat4kz;)yywi jnz8 t ) :ixyr/k+nces could NOT be produced by a circuit containing only tht48: wxrzjitz n; /)y)kyiy +kree 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 r ov 1coz6w)i3ns/hsp,esistors. Which of the following equivalent resistances CANNOT be produced usins/wovc)psiz61,3 h n og 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 diffeasizkk/ 0l) ;qrent values can be connected together in different configurations. If all three resistors are used in a circuit, how many different values of total k lkqz0a/)i ;sresistance 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,f vms7p s ;)byf3ypz w8qi6h72 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 same battery? Assume the internal resistaif7zspm f y;b3pws qhv)876y2nce 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 connectxy /k *dx;zd3 pb7swdz bi0(7yer kq,5ed in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about tyd3e ;k/0bdzdxi ,7b 7s( zw5ykrx* qphe 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 h6aqzd (ecy 7pfm87yo5as a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take 87y6fzepda7yq moc5 (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 re*jy8swo 9 hdy3sistor that is dissipating 36 watts ow yody83*h9j sf 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 curw npixd700 a9crent when connected to 120 volt7c wpx0nd9i0 as. 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 vnf)vq;qzg90)xq w b/ how much would it cost to keep a 100W lightbulb lit continuously for 1 year at a ratqw z;q/nv)xg )b0q9fve 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 lightbulhn;vq b *akb0gy8; fx+b results in a power of 24.0 W associated with the bulb. Which one n 8yv bx *;gfkb0q+;haof 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 owwgl r.8(pulx ytg(vn4rr8ft 7h:6z6i ns a computer rated at 500 watts in a 120 V circuit. If all comp6lxphr68vgrz. gl:t y ( 8(fr iu47wtnuters 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 batt 1/h0vo,cd b3pw u/fltery is connected to four resistors to form a simple circuit as shown to the ricv/o/ ,3 hbtlp1w0fud ght.
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 9gt8o)zys y nb h+q(2bto form a simple circuit as shown to the bztqy)hn9( 82bs+ ygoright.
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 switc(kw2 4m7j kacdt+ *hg)a4cxunh and three resistors are connected as shown. With the switch open am) cn*+7 2xcd w(atju44a kgkhs 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 ideal4zhy*ih qg. /un/8jb u ammeter, a switch and three resistors are connected as shown. With the switch opei.u*hj qghu4bz// n8yn 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 battery, an ideal ammeter, a switch and three resistors arej,o /kn8l wyi.pqt/ 0s2udcy t 9h()j7orh3 ae connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes.i9p 8y7/ u/ 0.jr eqa2yhtln3towkcdhs,jo()
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 equivalent rex4f/x,e bvbte(m76orduoj:2uf) nz 2sistance? Assume that all wires are ideal, the battery has no internal resistance, and all three re7,dje 2vt:2fb ur4b xu no(zmx6f e)/osistors 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 righ;jde -dh3 awjuir6)5h t with resistances r uhd)wd365iae ;-jjh $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 revn zh wl94lvk)y v-/,esistors connected in a combination series and parallel circuit to a voltag vevzylnw4- ,l /kh9)ve 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 c2ie 3*tr7ivjin a combination series and parallel circuit to a voltage so tvj3i7i2r*ecurce.
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 o 83,8llx8lima; rhxzof the bulbs are identical. Which bulb will be them8a 8r zihl3,xo8;llx 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 resisty: a 6x p87at1qa)jbxn5g1h,a t/d1jsk+tktsors are conney:nap1 s5adqb t8x1k1 kt,x7)j6h aj/attg+s 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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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 swit0tzi*cpkds 9 ;j.)mxs ch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes;c s) z9k*pmsj0xi.td .
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 amm(+u xft,qq,b eeter, a switch and three resistors are connected as shown. With the switch open xtb,,u eqf(+qas 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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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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