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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, aji:7odbi., kn4xj aj 4 r61pv,v x9yhkn electric current exists in the metal resistor connected to the battery. Which one of the f1xjiakp47 4: yv ox, 6r9dhjb.jkvni,ollowing choices best describes the direction 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 connecsrd ; cbv9t5//uxap1c ted in parallel, the_________each resistor i5x 9ta/b;ru/pscd cv1s 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 tb gl9m1n 6oxsyi. l-s3he thin filament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the ligoil.-1 9ssly3xmn6b ghtbulb 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 aj0n jsc(chk *:re being replaced with LEDs. LED is the acronym for which one of the follhs(0j kc*:njc owing 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-sectional0s tj; puzn,p,fd11-rf*hoh n 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 rath,pn0rn* t hso- f, 1upfj;zd1io 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 thh 8p)w6u5qrxk e diameter and twice the lenx )uq8p5kwrh6 gth 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 ye)lkr .y jm+(material but has twice the diameter and half tyml)( k+yerj. he length of wire X. If 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 resistor has length L and radius r. k.exo583h tcvddtc8/ This piece of material is then drawn so that it is a cylinder with nedcokv 5.tt8 de/3cx h8w length 2L. What happens 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 wancp2hls:zi.h+vanf-x/ o; x h) ts to make a brighter light bulb. He decides to modify tho.:in ;s )vlcz hh-a2xpfxh+/ e filament. How should the filament of a lightbulb 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 r21aoe hf9yo0d2hdqe a,zc3 / resistors are made of the same material. The length and radius of ecafdrd,0ozyq3/h9eea1 ho 22ach 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 resistapjr)az k bbblgdyb 06s7,,z(r7y g;k ,nce 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 resistance of this arrangementk gb lb7,s ; arb0zgyp)6(zbk,djy r,7 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 7i 0fe4 avfx3ndiagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter rex4fa7iv3e0 nf ading 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. The three bulbs m(6w2mkre cp f( e7i)y*ky c0f1, 2, and 3 - represented as r*y ()(eec7p m6m rw2yfkk0 cifesistors 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 rig 9 t3is f;yomaj8ipx01ht. If the current in all three resisisjp0y1m at9i;x8f3 otors is equal, which of 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 ap5 wq25aq2tr.mqrbbh)1 mu u; simple electric circuit composed of 5 identip hr1;b 5w5umm q.2quatbrq)2cal 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 N jxx)v nqbmi7 3wt* 3rm.ubv5*OT true concerning the simple circuit shown where resistors R1, R2 and R3 are have equal r*7 t)bmnbq3 x35u jvwm.vxr*i esistances?

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. Buoa+1sf0 i+sgajh z 20xbgcu/5lb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected in parallel with each other to thjic+bfx/zg 2u15 g +h00ssaa oe 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 kmx5t9 cq94w gthe identified resistor in 5 seconds once thexk 49wm5g9q tc 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 following simple circuitf b/2qxyy/j/ iuz)ja : have the same resistance, which would dissip///xy2bz iaj) j:ufy qate 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 du*pz4- yhxrm i u5q;r4iagram, the current through the 6.0 Ω resistor is 1.0uyihpr -5mz r4;xq4*u 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, andhy zxys13o:/bg fo2y. R3 are connected in series to a battery. Suppose R1 carries a current of 2.y3xb:zooyy ./1g hfs20 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 are connected in parallel to a bgy4d( goqt *:zatgdo4gz( t:y* qtery. Suppose 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 1200 watts and 120 vtj)biqw an0yj3 ok ;du.ocd-5 8 6wk7jolts. What is the maximum value of the current under; o 0.j7kbd5otnqi8yk6u)jj- cwdw3a 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 design-8*rfl*v mup:k h red(ed to operate at 120 volts?p(*h lmu* 8-rve dfr:k

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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 resiss/mj r+/bqz -z8 fep h7prl/g,tor that is dissipating 36 war r7//pm+bfhs/e - qljpz z,g8tts 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 pressq89 q9s dy3, lbcyjve* clothes is marked "120 volt, 600 watt.” In normal use, the cujql3e,*9 d vqs8ybc y9rrent 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 followins87o) tojc g1/fek(ld)rj mz0g resistances could NOT be produced by a circuit containing on8e0czs(j 7)rfdot/1l jg)kmoly 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 equivale4m,8k-n;j/ 1a )nsds r+q amosottrr )nt resistances -osmska /)tsrrq8o a)m, d;+j n4t1rnCANNOT 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 qn5rp,rm n t-(0m.sa idifferent values can be connected together in different configurations. If all three resistors are used(n pt.m,qrsi-0 r5man 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 battery, a total power P1gn svq oyvwl gn;-5g-s(i /gi0p9h. q4ay(fg 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 resistance of the battery is i; 1.g-vya/f h-sv9o 0 gg yq(nggl5qpsw(4ni 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 parall err18wz8z; lltfq+k9 el, the equivalent resistance of the combination is 5Ω . Which of r l8zwe;l89 qkrzt+1f 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 8b x jggy)y/ dz70hu:6*iclka9 v5i5huj( aubhas a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.45 k (6yg0 9zbj5hcd8 kxa:)bgajihv5i7ylu/ u * ug 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-5vl )q*x2 sp/adwes/t ).ynwvb6a p b is dissipating 36 watts of ) vb/ b-)ass ax nd*/te.52wlvwy6 qpppower?

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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 connected to 120 volt ytu5bk2;5kch8t z2ngs. If the price of electricit2k5ugc yn;b 8t k5z2hty 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 x hec7ebv;l/)e uvm1 .to keep a 100W lightbulb lit continuously for 1 year at a rate o;mxhleev b u/7v)e.c1 f $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 x1,8 7v2qvuy clw 1a9b1ckzht through a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices 8 wzbv,xqc7v9 1 k1c2 y1atlhubest 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 computeoa4wt;s1lhw ds-1+ gh r rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected by a 20 ampere fuse, what is the maximum number of the compute wtg1o1h4- as;hw+lds rs 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 resistors to form a simple circuit-7yks 0foj--7c eh yye as syho0es ec7yf kj-7--yhown 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 conneiz z1jlp k7kzj67/)2hfls o 6fcted to four resistors to form a simple circuit as shown to the rz7 2)ff17h j6 6 ozlk/sipjzlkight.
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 battjx*:bw 8vr)/rrchca4ery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter rea w 4*r/vj)rhcxc8ar:bds 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 swiz.qhc9;wnsz2z *.fcftch and three resistors are connected as shown. With the switch open as sh cn*zw .fz.2;sqc z9hfown 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 i mfubuxfq g:2d1 90v *a5szc/sdeal ammeter, a switch and three resistors are connected as shown. With the switch open as shqvc u0g2/xf:fbs1*a zd mus59own 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 : k tg3g-xoz:xshown to the right, what is the equivalent resistance? Ak :3xzgotg x-:ssume that all wires are ideal, 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 circuiz 0rif2:ogzz *6sbksm)td ; h8t shown to the right with resisdib0z zz;gs*kf)6r2t s8h mo: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 fivecn)qsm q2+kaz-,noz2 identical resistors connected in a combination series and parallel circuit toz,kam q)-s2on +q nz2c 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 ct ps6t n. i;4gbs3dce8onnected in a combination series and parallel 6e8 sic 4dt3.ptn gsb;circuit 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 thenves*z7rh1gcp :en951iq ( mo bulbs are identical. Which bulb will bens7h9ocepzq vg :m(*i1ne51r 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 ammetv+f 0)hasxpq 0er, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampex +vp0a0f q)hsres.
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 -y8ht xwbfsttyq7-pj 8v1 r,:r54eatideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown7tyq5rter - 1 w8t8ay-,hjpvf:sx 4b t 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 ar.4tygv/q9d/+6 1 ma qxowrndee connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes.y qdnxwto e 9mr1+d/ 4g.aqv6/
When the switch is closed, what would be the current in the circuit?

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总分:50分及格:30分时间:不限时

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