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习题练习:.Resistor.

 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 shown, an electric current exists in the metal re.yht rp ji80x-sistor 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 electric field through .0y x-pthrij8the 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 roag /xj6le r9fy.9j.gesistors are connected in parallel, the_________each resistorg6a jlj9.9e / fgxo.yr 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 f i:kq8yms+ 0ouilament wire of a lightbulb causes the filament to become white hot, while the larger wi:uykm o08i+ sqres 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. LED is the mthtj*az,yr.gq9 i :+:pg un0 acronym.p +qm:zhjya: tniu,9gt 0r g* for which 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 acz5qtp1(x zed- +xgo,nd 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 g1pzxx 5e d+zqo,(c -tof 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 wirvb0p*7ol)sx te II are made of the same material. Wire II has twice the diameter and twice the length of I. p ob*v0st 7l)x 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 bmow8) j f 2hy1zs qff7:ar+h:cut has twice the diameter and half the length of wire X. If wire X has a amsoff82cj 7r1z)whhy q::+f 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 radiur:*tntf) hggy6 * -efus r. This piece of material is then drawn so that it is a cylinder with new lengttye*u6g- f g:nthf)r *h 2L. What happens 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 deciddha6 tg;n:d: aes to modify the filament. How should the filament of hag6a ::n dd;ta lightbulb 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 ak4.2pf ghu+odph / 7zzre made of the same material. The length and r+4g uho72zd khfz/p.padius 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, each of resistance R, ar4*3 1ivavwy5l y/fnh ee 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 equivalenthy v inw y/lf*v5a13e4 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 re gx1 +o8i/m0 zynawg8r( cxs:zi .b*hesistance 10.0 kW and the ammeter has internal resistance w+z/0ig rs( a8cyx :gi ebnxzo 1.8h*m25.0 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 compound6ikf 7u3q;gie.6mck o circuit shown to the right. The three bulbs 1, 2, and mc6ueig;3 6kkiq f7 o.3 - 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 tsqp -bfgnqnz6cu 9;-: he current in all three resistors is equal, which of the following statemenqq:n ; u-6pcnbgz- fs9ts 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 simplei sr:a8)1mlmm electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Whicha1 r)m8:mmi sl 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 issao.gmk;8 sw1 h5ualj+1gdc 0 NOT true concerning the simple circuit shown where resistogj sudo w+k8m;10gc1hs5a al.rs 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 connected ixi y 7y(lseu00,a9m odzmv+p*n series 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 same battery, which one of the following choices best represents wh0 ymv+,paomsu xdl79ey*z0(iat 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 w8p 8tbn r zojzx/7bngj;x0w3dq f, z04ill pass through the identified resistor in 5 seconds once the circuit was clq;pf zb4/3bzx n jxw ,0 tdnrj8og078zosed?


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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 s* *ys2 e 9ox8ejmnwl5 resistors in the following simple circuit have the same resisxo*5m 2ln*s 9j 8yeewstance, which would dissipate 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 accompanying0 2vz wiowr/hszv1/2impe;;p circuit diagram, the current through the 6.0 Ω resistor iv ;mi1p pwoh/svz /r2i20w; ezs 1.0 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, and R3mzxt2f 1il;ov 4*4 rco are connected in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipates 6.0 W of power. What is the voltagt*m2 o4cvxzf ; o4l1ire 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, R2gkj 9r/7n n; a(nf(yox andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 diss;r o(na y/(f 7ngx9jknipates 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 waxs+fs k/ktd3yc5. :ndtts and 120 volts. What is the maximum va.skd x cd3+f5y:n/t sklue 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 lightbulb desiz :7k)ck+x v9xwmrjza*l2qe 1gned to operate at 120 voltr1)qzkc : j9kzl awvx2x+e*m7s?

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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 throu civv1/bqn og6dkg )-;gh a 4 ohm resistor that is dissipating 36 watts of power bov;-1nc k/d 6giqgv)?

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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 ukuttpop/,gw(c slqe92* 1t9xbs6 0s psed to press clothes is marked "120 volt, 600 watt.” In norma tlst6wt9 ,s pq(sou*2c0pg/ x1pk9bel 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 resistances could NOT be produced by a circuit col) dq5-w3 zocb+yhberr)1 -bvntaining only three identical 6Ω resistors?y1ed5-)cr )b +vlbrwo hzbq 3-

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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 equival xi6/i qoa w9+19 erwttklxmu9a5fe--ent resistances CANNOT be produced using ax9xi6+t51/af-wmwl 9o-t ie9k requ 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 valuesgv:xtw;r,m j/ can be connected together in different configurations. If all three resistors are used in a circuit, how many different value,t: / wmr;jgxvs 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 batter/ kbq de6y6-tuy, a total power P is dissipated in the circuit. How much total power is dissipated in a circui6/kq-6y bud tet 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 in parallephjpy9zmbn4.e o1a4 -l, the equi a j91peozb ph.4y-nm4valent resistance of the combination is 5Ω . Which of the following statements about the resistances 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 .l-jfq5i2q3*gr6t 89tv8 v wb p ecebha resistance of 12Ω when operating at 120 volts. What is the minimum amount of timp h e.qvrfi98q83b* 5etjv2t- gc6 blwe 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 resn4n/bj+w/(pk7+bsux9 s v desistor that is dissipating 36 watts of power/9j +u 4/(ew pnsbkx+bsdvn s7?

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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 ampere9 yeufibmc)/p0edx+e t, gu63s of current when connected to 120 volts. If the pri9edgu cy3)6fe 0 um+/pe,x btice 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 ga p-;9(3elr6 exoyw +boqb0s cost to keep a 100W lightbulb lit continuously for 1 year at aeo3q;sw 0oxp -ga rby( l+6be9 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 amar 8h8o 9b)y4.00 A through a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represboa8r) hya m98ents 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 ownszvdq /:u )zx1e a computer 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 computersxz ez) du:q/v1 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 conn5e,qehxib e/+)5yusl ddc0 zy ujpz5o1u* -q7ected to four resistors to form a simple circuit as shown to p7q5ueuq+,*diyz1 )yx e so0l h bd5cuz5e/-jthe 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 fourug7rn8 y.i 0h;:qu kw4pdfv a- resistors to form a simple circuit ahrugn i a-f .k: dp074w8yq;vus 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 ammeter, a swjwppd2)h a,r9vhl*va5i1 5 pritch and three resistors are connected as shown. With the switch open as r pv*hal )j5,rp5ip9d1haw2vshown 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, ali3xh 8)oqj*cn 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 amperx)j*i 8lh3co qes.
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 resistb)ogi3::ake 4*sq(mu- tnoz xors are connected as shown. With the switch open as shown ios :- itukq*a)x43bne:(g zomn 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 shown to the right, what is the equivalent resistance? l,d a)w*h-+ bgg, oq*jxj duz6(mcg8 i Assume thagcja8j)x-humdlz q+ i g*b*wg,d (o ,6t 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 rzd+8odrj1hrn jj7 d 57y46kcsesistance of the circuit shown to the right with resoj8zs1 y7rjd7c54+ k rjd6nhdistances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 identicawtu;2n9 r hg v *7bzwy3ert(x,l resistors connected in a combination series and parallel circuit to a voz9(ht27 wtxu ;ewrnvgr , *3byltage 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 c g8loufz * k5+xb/va,dzcral)2esa1q (5sj m8onnected in a combination o lvz+ 2 e,)cqr88jdgs5fbau(zmla/a 1k5 xs*series and parallel 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 the b5ocvkhrd1 k9im74cvqy b 909 lulbs are identical. Which bulb will be the bri 9k9krhmc9vbvy071o4d c ilq5 ghtest?


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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 battubr /:j7gj1gw:g/bj4 p j4m ziery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as smj:/g1izu7/j rg:p4g4bj wbj hown 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 switch and three resistors are cony ,8qvsjmfwibb(7 y)( nected as shown. With the switch open iq(fv87yym, wj sb )(bas 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 thre fifz.e7n5t ex6.f0fje resistors are connected as shown. With jnf5e0.f fz. 6ixfet7the 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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