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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, anm vn a.i-q.( ls+p)vnsf nvr/+5rz 8bs electric current exists in the metal resistor connecte/ b.sa-in nz 8n.rpsvqrl 5+vvfms() +d 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 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 parj+vmch8j -d33 sy 8dhfallel, the_________each resistor is djm-+ hf8vy d3s3h 8cjthe 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 lighgy7)mk9)ao xjt unc *)tbulb causes the filament x7u))tkgy 9no c maj*)to become 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 e5t4:95enw-okmdt h vLEDs. LED is the acronym for d hevt:-n mw9to45ke5which 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 and cross-zxi/6x ow)j5eh(o g1r 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 of the cylindricazo(/x6)rw5oj1ie x g hl 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 sam 84fv svh+ki61ezemt(e material. Wire II has twice the diameter and twice the length of I. If I has resistance R, zfmitv8s khe6e(1 +4 vII 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 half(xcz 2k5a: rtt the lengrazx2k(t :5 tcth 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. This piece of mat4u1) aml:adglerial is then drawn so that it is a cylinder with new length g1l 4mu)aa l:d2L. 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: d3d.oz.fnazc;+bdbudfsa g0 t+l w :4s:p 1b wants to make a brighter light bulb. He decides to modify the filament. How should the filamentsdo;+lzb baz+.wfpdn cad f.g :4::3u1bt0ds of a 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 cylindrig0km 1k nj7to+cal resistors are made of the same material. The length and mkt1 ognk7j+0 radius 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 resist 5k9rs 8 t3drvuqrdyun-qc6ss:w3 ,a,al9m+h ance 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 fourksywu rqm+3:h-8,a 6rnr5q ,93ds vdst ulac9th 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 internal resistba . qc-d +7fey)x5ads vpjtuk ul ,glcy9-501ance 10.0 kW ) ep-k +7ddx-t1ygal9blu0 .v5ca,c5q fsju yand the ammeter has internal resistance 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 5 j5qf a(j7bvdcompound circuit shown to the right. The three bulbs 1, 2, and 3 - represented as rebj(va q55dfj7 sistors 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 c( c s1q b-ka/+a0:xlc -jsapctircuit at the right. If the current in all three resistors is equal, whictl pc(qbas+0acx-a c 1k:j-/sh 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 pwu2,m 7mbm 9qc1k.gq composed of 5 identical light bulbs and 2 flashlight cells. mc mpq.21qk u7wbmg,9 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 staf/he5 -hq84jsw53rie/o2uo br9u ho f tements is NOT true concerning the simple circuit shoh/5qrsu 43 fhuhf wb5 eore 92-ooi8j/wn where 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 connected in sn(qp: l6 ky1 -eclc-f)kr7ywmeries to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andpnl7r- keqw6m f k)y 1-c(l:cyY 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 idt6 o8 vg3ymui.ogcsin c/ 3,5pentified resistor in 5 seconds once the circuit 6 n,coiu3tg 3og8ypci /.vs5mwas 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 circuit havefx.m0z5h 8r fm6(sx um wzdy-* the same resistance, which would dissipa8s ff 0mxrzz*m (u6-dh. y5mxwte 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 circui (ag/ t(8a 6(v5oyv2txz 8voe wm/lacft diagram, the current through the 6.0 Ω resistor is 1.0 A. What is the pot/ fvoxo tvyca 5m26 awge(8/(zl8v(a wer 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 b9kkr:9kr52 )zd eaderr-jp16q s /s cjattery. Suppose R1 carries a curresredrkrje9kas qkz5)pd 6r:j2c91 / -nt of 2.0 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 pararx w:nf 7 dd(l +dp5;ihkw63zfllel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W5(px6wl3; z:7ki+wfrh dfd n d. 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 coim4i+,-ls7tlk w-+m 9u djupbel is rated 1200 watts and 120 volts. What is the maximum value of the current undermlej7tb,l us-wk 4p9i-+dm + u 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 rtvlsq gz kt-4-)4(ej tesistance of a 60 watt lightbulb designed to operate at 120 voltettgt )q-v44-s(jz l ks?

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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 flowsp( -ymq86d.45yukuwe* hoqst pj c:t1 through a 4 ohm resistor that is dissipating 36 watts of power?65 ud ch-tp .tq wqe*s(14y:j8pyk omu

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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 ,qz:wc d(f aa(volt, 600 watt.” In normalda,fza(: ( wcq 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 followiwrtykm( 3a1w )ng resistances could NOT be produced by a circuit containing only three identical 6Ω resis1kw3 rmyw)a t(tors?

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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.tfi6i5k(bt-6ksz*h06 ec kwo0 Ω resistors. Which of the following equivalent resistances CANNOT be produced using all 06 bskwz *oci 6hf6tik5te(-kthree 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 connectebg 9kbb7g0 08nfn jty scx8k-)d together in different configurations. If all three resistors are used in a circuit, hock7n yxbg )-8b st 09jbgfk08nw 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 i vkmcov86 g,f/0c; qbpower P is dissipated in the circuit. How much total power is dissipated in a circuit if n identical/k o;qfvi68cmg c,bv0 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 para gg fa5esveqexpg960m y);o s 1cv4lorzp+1 +:llel, the equivalent resistance of the combination is 5Ω . Which vpo1 rv:eo9ceg 4 z5q 1)e6s f;+ max0ygspl+gof 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 desig4.vr : c67qe)xgd( ) vz cool;ksolsgta*; e5hned such that it has a resistance of 12Ω when operating at et;vg ak)hs;(o67dcr*olqc:e4. s x lg)5v zo120 volts. What 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 current flows through a 4 ohm resistor thqd z lf5 nt62m6pg1-i8qfifn3at is dissipating 36 watts of powftfiq q m66n8fz -dp5n23i l1ger?

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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 d3mj7pr )7:w1jhy szy p+ .xdqlraws 13 amperes of current when connected to 120 voltlx r+.p7wpj s17yy3zh d:qjm)s. 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 how much would it c r,.q ulf*xrf1ouiw9dr2u r 74 /a(myfl6i8zuost to keep a 100W lightbulb lit continuously for 1 year zl49r fd*1.yrqu6fu lm fr,w(2 8air ux/o u7iat 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 current of 4.f1p1rf0cjhz7 :p l)zf ,g3byii,i3 ib00 A through a lightbulb results in a power of 24.0 Wl,r: byzf3ijhc iipgf,7 )1bf i0z1p3 associated with the 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 six ow;u6kwq7-: znk db l.cyns 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,d6lb :uz 7kc; q.-ynwk 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 battery is connected to fowcfy/rjemy( c(oqt- z4,w :m5ur resistors to form a simple circuit as sh jy5z4e: ctr/m y (mqwfwo-,(cown 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 connected t)zbny/bw5mp 7 o four resistors to form a simple circuit as sn b) /z7byw5mphown 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 switch and three resistors sfx5h:v;l v 8 y-.tezuare connected as shown. With the switch open as shown in the diagrafv-tulhyv .x5z se;:8m 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 and three y0jzyu y(: g9eresistors are connected as shown. With the 0yz(jyg e9 yu: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, a1jcddhr +rq*7l)b4 atdcnf 5hj5i 6,o n ideal ammeter, a switch and three resistors are connected as shown. Wi h4,h rc156 75dojqaj rl+ncdd*bfti)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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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 equival exm6vq3;n-sjent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have identical resistance- xvm6se3 njq; 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 circuitvqb3 *gq5a9em8hz r:z 7m-tg o osk;s; shown to the right with resistaq37q z-mt :9m;gs;k*8bvgse o zahr o5nces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 resistors connect.j iit/ncuv j: 8 /zoq6zj;kk9ed in a combination serk.;tjv i z/6kqn j/ui 9zo8c:jies 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 identict )ij g8p4.et eklh .1whty.bl( c;g1zal resistors connected in a combination series and par ity;hl.8g leg 1tp.c h4e).z w1tkb(jallel 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 bulbs a(u ,tq f-ytl 4zuc5v94ov+dcvre identical. Which bulb will be the brightestt c5ld44qu+u(vzcv,9t o- fy v?


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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 swigprl54. ow4lw tch and three resistors are connected as shown. With the switch open as shown in the diagram the ammet54gr ol.pw4w ler 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 switc/)am8cd9rrd:-21c ytdnq9lq -kc *p 2 wmh asbh and three resistors are connected as shown. With th:casqr9/d d- naqhdcrw-tmy2b 1pc9k*l )8 m2e 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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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.23: An ideal battery, /4 uns,nmg8 vwhf0 t6ian ideal ammeter, a switch and three resistors are connected as shown. With th8 hn0gi,s/6w mvu fnt4e 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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