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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 showgls3eo29 m/7urg6imi agf 0q;n, an electric current exists in the metal resistor connected to the battery. Which one of 6 mg gg 2;0iimoqfa/39ul7resthe following 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 conngi3dmn 3h,s fjl(t.u,ected in parallel, the_________each resistor .i 3j3d nlth u,(gfsm,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 p5xn(4(hcxq9 t0 ljjvivi );j, am5zjcauses the filament to ben()5xjxhtc( ;v 4 q,ljjjz vm9p5iia 0come white hot, while the larger 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 lights are being replaced with LEDs. LEi-p/ 6hr huao8D is the acronym for which one of the followia 6piho8ru-/h ng 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,kh92 g6ttd7 bkhi,v i4jflz9 and cross-sectional area A. It is to be placed into a circuit, but it first must be cut in half sk,h tj 2fdgvz k4 9ht76lii9b,o 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 mate 6zsf/;9fdko b q4bk8xq4jkw7rial. Wire II has twice the diameter and twice the length of I. If I has resistance Rkqbbs9k/ f 4j 8q67kxod;4wzf, 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 th9*kv )2ec)gsge t kj0o72kkdiameter and half the length of wire X. If wire X has a resistance of R then wire Y would have a resisv)2 *ktetjk o ek2g0g7ck )9shtance 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. This piece of mz0gn)knkt 9n/aterial is then drawn so that it is a cylinder with new length 2L. What han0) /gknnkt z9ppens to the resistance of this material because 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 decidestyyf l,as* w.5 to modify the filament. How should the filament of a lywat , y.fs*5lightbulb 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 arv3o .rehlmmxtu:er;n.;vt3,c +by1upi ,u0 ce made of the same material. The length and radiuseny.,3.:x;o ltuit1 u3; cucp+e v0rm mrvb ,h of 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, eac em)k( cmzzf4f*pl t47h 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 4*cmz4l(ktzfep7 fm)a third resistor. This set of three resistors 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 internx 0v)cbgb 01f, tsr, h;syr0fzal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. Tsch sf0 gtf,x0rz,y)rb1 ;bv0 he 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 shoj w u1 s7-/uhcjercc2:wn to the right. The three bulbs 1, 2, and 3 cre u21w: c-/sch7uj j- represented as resistors 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 right. If the cury7;ogs wx+m v6rent in all th+s7w6vx ;yomgree resistors is 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 repd*tkg sk0p5qb r 1ad**resents a simple electric circuit composed of 5 identical light bulbs and 2 flash 0t bas**gk5krqd *d1plight 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 tfe++rn-6 vw.wz(ii)ar;vakq rue concerning the simple circuit shown whfi+ aaqe wrk.-6; n)+wvr(zvi ere resistors R1, R2 and R3 are 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 con6yp36y 9 g(yvwiz0dytnected in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements 6dviy yg3w( pyz6 9ty0are 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 resistozx,axe *ru8ijh ;belq6)-a . emrc7j9 r in 5 seconds once the9cexx8b,m .-r6rhlz qeu i7aa ;)j *je 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 theyq)79j jhrad ) resistors in the following simple circuit have the same resistance, which would dissdjj 7)9)ahrqyipate 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 current thr38-z6 fnb) vqigfe kl2ough the 6.0 Ω resistor is 1.0 A. What is the power supply voltage Vbekng 8-326ql)fivfz?


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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 )km.xsgl0 x2va)br *y to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, anax*mr.y0b)x2)s vgl kd 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 resi140 gmu z ,l;hkpcsu;q;epx z8stors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V 1zu;c ;0q4pmuh ;zespx g8lk,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 watt(ls-4*me rrwb1 m da nbs8s26 jpeky*)s and 120 volts. What is the maximum value of thed 8*w6je )n1r-pmba(bsrs e2 4y*mslk 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 lightbulb designm9gwta9sky1x8+ rj v7ed to operate at 120 voltsrgtxsym7vak9+1 w8j 9 ?

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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 throughk2 lhagg sa)xm9kl,. 9 a 4 ohm resistor that is dissipating 36 watts of. l92am)lx ,kak ggh9s 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 clothes is marked "120 volewlqt3v oi*38 8rvhy3kw/ 7;z up3zect, 600 watt.” In normal use, the curren* wp3 ;ocw38r8/lvk zeui73 tyze3h qvt 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 resistances could NOT be produce3p9f qkt::qqanlp5s/ d by a circuit containing only three identical 6Ω resistorsf/k9 n:sqlp 3qptq :5a?

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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 thre.+vff .5mc gmge 1.0 Ω resistors. Which of the following equivalent resistances CANNOT be prod.+gfmg vmf c.5uced 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 i8:enkjhco8 lzh l*d)*n different configurations. If all three resistors are used in a circuit, how many different vj)kd: ech**8oz hnl8lalues 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 pow6iq9ky/: o+tup+ q*v w g;cnzver 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 b c:6yuoqzt9 k/qn;g+i +pvw* vattery? 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 resistoqk qd;m z6od3,l5 j -r,4ubg njor8-kjrs, having resistance R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about the resistau,j5 kb64r -zdkq n8lm,rjg; oq jod3-nces 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 that it has a resistance of 12Ω when opera faz;sdttw(w:*; hz.j5c ho w1ting at 120 volts. What is the minimum amount of time tha1 *wdw;t;t sa(c fo:jz.hzwh 5t 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 dissipatinr y b9bm3sv4.li3zqs1g 36 watts of powy49sv1. sb zbqilr33m er?

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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 connectab1 vti8 ifzm0 m5nz.v-u;4 hxed to 120 volts. If the price of electriciti 08 v-vbfzi1n z;hm 4uaxm.5ty 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 w7:zjy.mym w8luwnu*-h3 bp y( 7jl5 jsould it cost to keep a 100W lightbulb lit continuously for 1 year at a ra :3ljy.jjnyw5zw smp8h-uy *lu b77(mte 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 currenty . irir0(/lm-;j ytmr of 4.00 A through a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of the li/-liiy t0m rjm(;ry .rghtbulb?

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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 in ayzm 9dz0 +26t.d jheuq 120 V circuit. If all computers are plugged into a single circuit protected by a 20 ampere fuse, what is the maximum.z0+yhmdtje zqd6u 2 9 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 resistors to form a simn3 j5yye12 /jwbt pwf6ple circuit as s6wj13ye 52bnt/ wpy jfhown 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 co *2dk3(r evnuannected to four resistors to form a simple circuit *e(uad k2r3nv as 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 am vp2b z;dm.es246 urdbmeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the 64b rue ; 2bzd.psdmv2ammeter 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 ammeter, a switch and three re vu hwct7k9+;:qir azxc g4/h3sistors are connected zcrxuiwt7g hk+qh 4a3/ 9 c:v;as shown. With the switch 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 battery, an ideal ammeter, a switch and three resistors are con)/4mk hms7hxs nected as shown. With the switch open as shown in the diagram the ammeter reads 2.hsm)/ m s4hk7x0 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 sr m6xrk2 h ( yxmmg g7))bjx6-4mi1vs shown to the right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, 724 1vj6ihy6mmmrrgmb kgs(sxx- x )) 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 rigc:lg:ra b.wlft 3c/ur5fk/b5 ht with resistances wlclf5rrbk:f/ u . t/5ga 3bc:$R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 bt13j ;ce mk(f mw6ef/helow shows five identical resistors connected in a combinatif3ehk(6c ef; 1w/mtjm on series and parallel 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 connected in a combina / yklew5aqr2tc 20d/(mjz*mation series and parallel circuit to a(/z *qkld5aymj0cr et m2w2a/ 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 thwtpws). j6ba+ 4e tg4pe bulbs are identical. Which bulb will +bwg. pa )p4t46swt jebe 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 switch and three resistoj0 fz66*lvq bb r:dcc9rs are connected as shown. With the switch open as shown in the diagram the ammeter reads 26*bl6zcb : 09fvqd crj.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 three resistors are conni kl bf016clq49nm cjr/ xb5s2ected as shown. With the swi0lqrmbl65 i1fns/x cb4k c2 j9tch 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 and three resistors 9ougock 3-r:gare connected as shown. Wig39org u :cko-th the switch open 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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