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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 shown, an electric current exists in the metafmegf5mk bky.ud/0k- ke p. ,2l resistor connected to the battery. Which one of the following choices best describes the direction of electron flow through the resistor and mmdgk/p .-eufkyk 0., bf2 ke5the 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 paral(rs-avexlsg cm+9 f(2f-3gd t m;i3pzlel, the_________each resistor is the s-l(g (vfmtfa+ pc3sis3-mx 2regd9; zame.

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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 w6v a(h7h:tw gthe thin filament wire of a lightbulb causes the filament to become white6wh whta7v(:g 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 repli1xlzl,i167 g cur ohoca ,anr*b9ee*: 8x 2jwaced with LEDs. LED is the acronym for which one of the following choicc r i9g l1oawj6 xzhui*7e2b,:*re81lcaox, nes?

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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-sectional arevmj-a4/yt gd8jytdalpybwu+ + y7);*. wn .cxa A. It is to be plau..a-t+w4vl* djy wtc/dyy y+jab8xn)p;m g 7ced 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 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 toyhy5/(f lv znpz3 h/0he diameter and twice the length of I. If I has resistance R, II ha3hynh0zl/ ov(5fy pz/s 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 ank) ,tb qe7o8ky,3/j ht ip/szld half the length of wsi y8,ph 3kt)lj/ktz /7 b,qoeire 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 u:*o5ag+thvpzm5 :lk u;e sc, has length L and radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. Wgsu5* ztkm: auheo:; lc ,5pv+hat 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 ma lv,0y g1za t9tipj-d+ke a brighter light bulb. He decides to 9-tl10j +iv tgza,dpymodify the filament. How should the filament 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 cylindrical re7qr8ax u pwd+n:5syv8a eg v(3sistors are made of the same material. The length and radius of each resistor 3d8auan:r(v8xpevy qwg s 5+7 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, are connected to a battery in the asqx o*)m2c+ c/2angyfollowing 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 resmn2sq +c2x)y c a/*aogistance 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 wwlggxv k71v e 0w:kpkj18o8 *diagram has internal resistance 10.0 kW and the a wl1g:vw*8ekvw ko0kxj g8p 71mmeter 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 compound circuit shuhttb i g,d683own to the right. The three bulbs 1, 2, and 3 - represented as resistorshg8 ,tu t6d3ib 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 rig7y, 9extapiy o;15frz ht. If the current in all three resistors is equal, which of the following statements mustr, t95p7aof yz1iex;y 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 ikk.7.,cn5qa xkd/h(f bj ph) of 5 identical light bulbs and 2 flfdx,b..ikn7)/(kkq chp ahj 5 ashlight 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 ct i:plid d:;,e/b9;nsw v pej6oncerning the simple circuit shown where resistors R1 :te6;;s9 pivnjiw,/ ld pde:b, 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 connectt c)*ox195mnkw +,dp92zpcqhd2 v id ted in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elh1)c k2 x, vo9*pwdndctdpz95iq+m2 tements 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 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 identc 3w43uqonbw.ified resistor in 5 seob3u q cw.wn34conds once the 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 ( c iotb;*bj(isimple circuit have the same resistance, which would dissipat oicb;t(i b*(je 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 circs.zw 5nd9de 3kuit diagram, the current through the 6.0 Ω resistor is 1.0 A. What is the power supplzws95en3dd . ky 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 fxt 05anzbe,- a;swlhci7n46k/phe;o9t ax 3in 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 b-aa74xi,toz kc0 nh5 l awft es6nxh/39e;; pof 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 2*u:b7 1;(ei ;sfkfb wvdgineparallel to a battery. Suppose R1 has 2ev21w ekgu( ; bfi:f;di*n b7sV 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 volts. y,qackkk5uqmy6* 3u+ What is the maximum value of the current u3aqcy6y 5m*kk, uuk+q nder 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 fw7)w7ti4 :z ffh7z 2fkljao5lightbulb designed to operate at 120 awlf2j):7ko5 fwz f7if7zht 4volts?

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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 flowsi: lyhwnf88+*4y6rq7ytlsxq through a 4 ohm resistor that is dissipating 36 wattr 7 lxlyfh4y: qis*8ynw8q+6ts 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 press clothes is marked "127m 4p7l0sot*n xd */n3tcbpny0 volt, 600 watt.” In normnpt d7 b*n3s*poxm0y/c74 tnlal 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 follo5c.tb7-p ztf jwing resistances could NOT be produced by a circuit containing only thrc7-t5.pzjb t fee 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 rewn n/ 1qua84s:kgzr k:sistors. Which of the following equivalent resist /kruwzqna:k81:s gn4ances 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 differen*g2ka u6 jdkp2.y ioi6ccn ck9*b (k.nt configurations. If all three resistors are used in a circuitk2c .g auk*ikd*nbp62c(oik6ny9 .cj , 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 P,ibyrkbp+:i2 rn bo1vr7g ,v: 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+pbor1ig kr :7y2ir,bb v:nv, 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 resioog-.0dz*qwl stance R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about the resistanceo.*o-gd w z0lqs 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 de*u1j r8 zfgdl7signed such that it has a resistance of 12Ω when operating at 120 volts. What is the minimum amoun7gr8 lzf* 1udjt 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 that is dissipating 36 wlmkmf ;/ rm*,m uljx5,atts of ,*j5 ulmx/mfrmk lm,;power?

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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 1f-lp8n t7q)hb i*-cox 20 volts. If theq-hb )c*np-o78 itflx 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 cost to keep a 100W lightbulb lit c*ut;1st+,a zk1yilej ontinuously for 1 year at a rat;e1*tkaz+,yj s1lt uie 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 4.00 A through a lightbulb results in ,zst hou(ed++ a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resisd+t use,+z(ho tance 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 oz wv 6jgi,jaz;e2/r2v f a family of 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 mzrw /z a2 ji;g,je2v6vaximum 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 simple c4sx/fk176hpvnrq l yp gd us,t9g():dircuit as gsp(,4p1dx/rl :sgtqkdf6u 7h)9 yn vshown 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 to four resis20q yb1vpd7i/a9xn dxtors to form a simple circuit as shpvbq2n axyd/7 x19di0own 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, an3fq;s v,k -w8lmgh )jv i4op+r ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammetvp 3msg;ihf)wv o-q+klrj ,84er 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,o 7+nn 5my9cv/vl lev. a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.v/m59v lln+7yen . ovc0 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 switcgf -rxdzy;0sl xc)9-xupj7m )h and three resistors are connected as shown. With the )yj d 9)-70cpg-x;xsm rxufzl 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 equivalent p ext4yh a+xwa,z,18eresistance? Assume that all wiresw1p48,y teae, haxzx + 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 circuit shown to the rigp7uaee n) .. +ftyeem3ht with resistannpe tf.y+u).am7e e3e ces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 identi0tz*k tddstha )yr3u,k ( n.;ccal resistors connected in a combination ser)zd0t sh tuka3;n *ckd(.ry,t ies 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 rg:)b 7woo e,ipesistors connected in a combination series and parallel circuit to a voltage source.,)e7woi b: gop
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 are dv ilbqbec1 6j6w 4))m1q v7ltidentical. Which bulb will ewv6l1vtd7b l41j) 6bcqqmi)be 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 a /hb-hd7o a:pkzj4(ux mmeter, a switch and three resistors are connected as shown. With the switch open as shown i4akz7x:hh(do p/j- u bn 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 threp,oip ; *jw(pge resistors are connected as shown. With the switch open as shown in the diagram the a p;ppg*j,i(wo mmeter 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, ap,n yh;vr4 m tdlv13qm; j1z9qn ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the dil1p mn 3hvtdqj4y;mrv9;1, zqagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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