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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 sho k25exn8kqe i)vpq b k241ahl;wn, an electric current 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 tel)2aqk hk qpn4; 8xk215be ivhe 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 qln 9 izsls597are connected in parallel, the_________each resistor lsn99s l57 zqiis 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 thinp z8z.dr8y:os1 sehpu69 q5tk filament wire of a lightbulb causes the filament to become white hot, while the larger wires c8os yzpp6u8d9rz :1hq ek .5tsonnected 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 LEc) zyhe:lo(mv )*4jl eDs. LED is the acronym for which one)c )o(e4 hllz y:vm*je 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 resikfln 7+uxr8vh62 tm 2q;x8lvustor 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 lvn;x 8fr h+qu2k xltv286m u7resistivity 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 mbjh 5i zp,7mw n,9tq.5nip(vi3b wh3same material. Wire II has twice the diameter and twice thji ,p5vnqpnmtwiw 79 z,bhib h3m (3.5e 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 twicw l-)j aq4pkh7e the diameter and half the lengt-qk4wh 7pl ja)h 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 rif8,3v m*ou+0t,;bc nrmuvh and radius r. This piece of material is then drawn so that it is a cylinder vht +c,ob0vr ur38imfu;* mn,with new length 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 brighte8h:rw8mj* nyn y 1v5flr 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 a given voltage? 8:rw*1yvn8ljf my 5nh


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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 are made of the same manwp6 :)l/ie w3 ;pjcx- fdzgg/terial. The length and p :c3p;gle6 jd i/fwnw g)-z/xradius 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, aredr)779 jdxama0ha 4xp connected to a battery in the foa hx49xa j)7da70 mdprllowing 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 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 accompanyinle2a0rhx 3ky)g circuit diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 2r)le0 3ay hxkohm. 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. 3qa5 ,zf7*7xaw4vh hb8/nm ebm7 zvrqcf8(xf The three bulbs 1, 2, and 3 - represented as resistors i8vq7 xqhhm7wf5(e zn*8/zb r7f xa, vf3c4mabn 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. nm)ot3 ys;9bo+09ny2v vg e7p0te trd If the current in all three resistors is equal, whv rmy0b20ost3g ;v99d+tnt)y7ne poeich 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 represents a simple electric circuit composed of 54jl7vam z+ t/f ao4)so identical light bulbs and 2 flash 7ts 4o/z+lvo4)aajfmlight 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 true concerninm nuj/rs9 9g p,sq rhsy/298cfg the simple circuit shown where resistors R1, R2 and R3 are have e99/nscgsu9 r/ p 8q f2j,hmsryqual 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 in s: (ijpdh cg49h;ihqt.eries 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 choicesidg4tphj (h9:;ic h.q 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 cou5 w .m t6:jdv;aq2ckmllombs will pass through the identified resistor in 5 seconds once t:c2ml; 6 k t5vdjq.wmahe 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 resistorsd zye)4a b(d6kriro 35ym1l d; in the following simple circuit have the same resistance, which 4k y(6brd dya)m5r1i zdo;le3would 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 accompanying circuit diagram, the current thros 0+o:u.cgp xpugh the 6.0 Ω resistor is 1.0 A. Wsp.pu+x 0:ocg hat 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 qz8.+udhce (cdzrs33 in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has au+r .qdsdc3czhe8z (3 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 a7us4* frn3 zrcb- 1kbdndR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What zb -krcn*1ufd br347s 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 the maxim hll(gkcyf(enc9 j 8ts* 82e1eum value of the currentle8 c9 j *y(lct1segh2fe(kn8 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 resis3x* d hv:lh3jhf(;xm ztance of a 60 watt lightbulb designed to operate at 120 voltszxxf*d; hmjl3 (3hvh :?

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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 s u6(8c zd,lkn4 ohm resistor that is dissipating 36 watts (nl s,d6uz8ckof 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 sdjsz/8k*y* jf1 /fccis marked "120 volt, 600 watt.” In norm/j *y* jss/f1df 8ckzcal 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 coul-yet+ju+xw :h d NOT be produced by a circuit contai+:+ye hu -xjtwning 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 equivalent tgy fnt0/./bl resistan0gbtt/ n/.y lfces CANNOT 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 different values can be connected together in diffqf,h (b;-x bilerent configurations. If all three resistors are used in a circuit, h-x;bf,(i qlbhow 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 resist0 g )j-p,qjm-qpsu 8oaor is connected to a battery, a total power P is dissipated in the circuit. How map)-s-0,8pjuqqo jg 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 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, arew x 1argrk253b connected in parallel, the equivalent res25g r13wxkr abistance 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 a resistance of 12Ω when ocxp2j2-w ym)f perating at 120 volts. Wh)yfx2wmjp -c 2at 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 currv fmpj;7z32 aqw7btfp .+tk 7gent flows through a 4 ohm resistor that is dissipating 36 watts of p7atm.+qzwff7gv;j7btp3 p2 k ower?

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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 connecte .)rbm5pl 5 fworhj /q p9e7ehb64.plyd to 120 volts. If the price of elecjqpp.h o pb6bf l9rhr.e4e )/ymw5 5l7tricity 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 k2ify(.fl (gj9: qy popeep a 100W lightbulb lit continuously for 1(oflifpq (j g2yp.y: 9 year at a 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 currem4svq *0 +r7tb+ pjqppnt of 4.00 A through a lightbulb results in a power of 24.0 W associated with th4tmqjq0ps*r7pv p+b+ e bulb. Which one of 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)u,xeha)0brkh g9j 6d six owns 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 bx) ,0 hadgukj69)r ehof 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 resistf cj heyv*r7z+m4sr(39mr 5cge .9 metors to form a simple circuit as shown toer+sr cg v m5etj9fzm74re.cyh9(3 m* 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 connected to four resistors to form a simple circuit 9net w0t3 jtr 3;gfx,zas shown tn3xrgw0 , 9z3ftt ;tjeo 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 idealqxdgf29t2v4zr / s22zpki jl+ 3ql /gu ammeter, a switch and three resistors are connected as shown v2szu ltgij /k24glpd+2z 2xq/39frq. 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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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 w:p,*d crinazaa) bz67po, .nand three resistors are connected as shown. With the switch open as shown in the diagram the ammeter readp6c r bzda)7,in. wp oz:,n*aas 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 x km 4g4war()ks:k6fhideal ammeter, a switch and three resistors are connected as shown. With the swxkkf: 6w4(krs h gm4a)itch 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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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 equivale4zehsc07b9 gk nt resistance? Assume that all wires are ideal, the battery has no interksegc47h9z0b nal 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 +qgqm.uge):u shown to the right with resista)qum+e g .uq:gnces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 y3o a2e)u8isgidentical resistors connected in a combination series and parallel circuiase g8)io2yu3t 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 re0w-k(l axaeu )sistors connected in a combination series and(-luea0 wxka ) 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, 6zki3h c1s)ek all of the bulbs are identical. Which bulb will be thes zki1c)he6 k3 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 ;k mvl. +wmcl4 edc*7vammeter, a switch and three resistors are connected as shown. With the swit.vd4e7 cvwl+ cl*m k;mch 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+f 2t0- nq f2p1l6 ekcyqydiw4, an ideal ammeter, a switch and three resistors are connected as shown. With the switch opqtl4+6kcfy02w e 21dqy fn-ipen 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, lk ,l+qftcr 8 cz.l2k6ir7hhc9i74e ma switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampz4h.k8f+2m,ckle 9lcri cq6ilh7 tr7eres.
When the switch is closed, what would be the current in the circuit?


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