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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 metal res.zxokx k c57s-istor connectezxxc 7k5.so- kd 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 parallel, the________s-;fh ;g5p dbc_each resistor is the p- ;s5gf;dhcb 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 causes the filam+vt *e4 b8zuewmd m98vent to become white hot, while the larger wires connected to the lightbulb remain much co 8ewudv84m*+9vt zmb eoler. 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 househ4/vz st:wjc/mold lights are being replaced with LEDs. LED is the acronym for which one of the following choicesvc/ 4z wt:j/ms?

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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 1zw8w8rz;dr e a 6fr0fz7v gm6qq 4ip8has 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 resis z ziaw0rzv1p64mfgwr8r8d 7f qe68;qtivity 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 ofe 89is-3io(wb ( 6 p9axhvwbqt the same material. Wire II has twice the diameter and twice the length of I. If I has resistance R, II has resistanc83 v( (hob9itp6iswqb a -xw9ee

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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 twilc*8 o1y.8biy,py )tyoiefx 5i +nus 1ce the diameter and half the lengt 8*)bsx+co oliin1 py8t1i.y, 5euyyfh 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 t we(vg 9e2 pxj v71p:vg0p jduu,-0iqr. This piece of material is then drawn so that it is a cylinder wiqvt,ge9w (1720u0pepx i:pj v -jvudgth 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 Edie8t3 ond o.f)woe6lm3vot;as ld3 0r 9son wants to make a brighter light bulb. He decides to modify the filament. How should tr0 3)3ov;l8ws6loo3 9nfe ed .mtoadthe 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 res)nemv mv pdj1)c81 4ykxge 0w3istors are made of the same material. The length and radius of eac1egekv01)4ywm vn3 mj)c8 pdxh 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 resist7jk24 w pvl.woance R, are connected to a battery in the following w7w42w.j lpkovay: “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 accompanying circuit diagrv:v a8a++ym0 gqz 81bdd g*dgram has internal resistance 10.0 kW and the ammeter hasqmvzv+ 8* d1r0bagady8 dg+: g 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 shown to the right. The three 3;,at opo/c hemls j7f2so/q3bulbs 1, 2, and 3 - representef hl2matspo o/j;s 37q3oc/, ed 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 simplek; q asm*4z j5a8jox8mpfb g*e 0lez87kkn 90l electrical circuit at the right. If the current in all three resistors is equal, which of the following statements0 msg0k78afe4j* l *8ek o; bzz5x lq8nkmjap9 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 righp 60z4 /z8+wiurzzvq8 yvutanh 404tz t represents a simple electric circuit composed of 5 identical light bulbs +8 vu0/z6azzzt4 rnutzw h440qv8ypiand 2 flashlight 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 coyy8u0;on la ek a6mir3a3/b3oncerning the simple circuit shown where resistors R1, R2 and R3 are have equal resist8mr y ekla y/uoia;a0ob6n 333ances?


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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 connecteds+r :nd-1vn hv in 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 ods v1-+n hn:rvf 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 thgnpx5y5 o9s5 he identified resistor in 5 seconds once 9hp5nx55ygs o 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 resistorsph :c6y3kt+wi in the following simple circuit have the same resistance, w + hpkiy6:ct3which 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 accompanying circuit diagram, the current through the 6.0 Ω :cc9 equ4zru9wca ;p, resistor is 1qr4ca p;c9we9:cuuz , .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 7k9zzv fm 0s0gR3 are connected in series to a battery. Suppose R1 carries a current of 2.0 A,9z vzmsf7 k0g0 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 pyyz 81h3. fm tx z)(hw t1z8fmv44vzyjy:mg8in parallel to a battery. Suppose R1 has 2V ac3m8 zyy)ttm(h:vyy.f14p xhz 8zf1gmz 8 j4 vwross 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. What is the1 jub :kzf0* f(t+yhti maximum value of:z+tu b tkf0yijf(h1* 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 designed to oxez +-7wubd;g perate at 120 voltsbdxe;w +7 uz-g?

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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 4 ohm resistor thaf zi5 uhcs 3cxp7+hv (rme7;w7t is dissipating 36 watts of pumi h5sx7fe7( r 3wvpchc;z+7ower?

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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 useds-f3 9dkh 6p+,hcdk px to press clothes is marked "120 volt, 600 watt.” In normal use, the current hfkxk d-hp+ d6c9 3ps,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 followin *eitkcs/ cn4+g resistances could NOT be produced by a circuit containing only kc*/4+inec stthree 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 resisto+01xnvm o o:e3cu9prbrs. Which of the following equivalent resistancesb rcon9m3 +v:u1eop0x 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 conns;45cnv a z*)(tly5gtq you 3vected together in different configurations. If all three resistors are used in a circuit, how many different a5y*nu vv5ot s;zq)t(3lc4gy 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 d fc-72yiovvk4iff ocp+ 2.m)/az ew,a battery, a total power P is dissipated in vc .),-pf a+e7om4iic/zyk fw2o2vdf 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 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 rt6rcn*ha m4.t;/bs uparallel, the equivalent resistance of the combinatio/ 46rr;bua.n s ct*tmhn 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 resistancem d)qy -lm)d8w of 12Ω when operating at 120 volts. What is the minimum amount of time)y dq-dm)lmw 8 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 thx4 efx4lz9g4 orough a 4 ohm resistor that is dissipating 36 watts xg4ex4f4ol9 zof 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 4w3scw9 vktq7/u)ot fk1 tk*fconnected to 120 volts k3kfvc4tqk) st/17w *9owu tf. 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 cost to keep z;dryadn 8s2n6v jt./a 100W lightbulb lit continuously for 1 year za6v.2/ yd ;jns nt8drat 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 4.00 A through a lightbulb results infgxr8ei 2 1we36fsu81zkxus 4 a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of the lightbu181 zux efw 324fsekgsx 8ir6ulb?

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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 c m3. kasi cy t0fmqvpzb:u41,1omputer rated at 500 watts in a 120 V circuit. If all computers are plugged into a sit i41azy.1qp fmm3ucs:k v0b,ngle circuit protected by a 20 ampere fuse, 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 four rep)caa+ymq8 74aon1my sistors to form a simple circuit as shown to the)oyaqaa4m1 yc7nm 8 +p 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 resist13 s5asr4(kt ;svtevs a*;h8g+xdgsc ors to form a simple circuit as shown to tsh g*t3sdsx ae1+rvs4k 5 ;acs(;vg8the 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 ideapqql*pw, +dk88u:yt/ f9.gk.uvm iot lht;h4l ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2 qlt*m;9d/w p4tk i8ovl tp,g.hu +uy:fqhk8..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 0 ye.gau5ax9y5q2 yyaresistors are connected as shown. With the switch open ay9yxgue0 q aaa525y. ys 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 swlfgw3lo 4kt :t enu,85itch and three resistors are connected as shown. With u5nkf lwgt3 8lt:e4o, 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 isl,;u vo1 k gl:qb2oa9y the equivalent resistance? oqul1;2g k9a: yv ,olb Assume that 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 resistance of the circuit shown tof mn3b:(vgz)v:qt0g jwi/fu0 the right with resistances f3zgum:)/v0fqb(i:vg n t0wj $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 7x m r c1 xmcy:-p7v90e ncr1xtvlyog5t.5ku4 connected in a combination series and parallel circuit to a vol otu vmm1ey05x 5p xk4g9rc cxvtl.r-cn:77y1tage 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 isjdpg-:-91m vqz nz)g 15 u00qwfhytdn a combination series and parallelzt mgpv- q0qufs109 -zgnyw d:)dh1j5 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 diag4sfak3;vid er6scjebe ywn.5 :d 7(6xram, all of the bulbs are identical. Which bulb will bid5a;(: w7ejv rdeb4 csk6s.fe ynx36 e 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 resis3lo 5p eityo9;c +l 9-4p4xlg)rgnx gltors are connected as shown. With the switch openlp lx co9-yni35 lgpl)o+ r;xg4g9 et4 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, an idea,*cjb/h vvp/n mt-5cm*x2i6 jiea d/ il ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2 mx*it6-npcie b2/*v/ jvac/h,dm5i j.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 are conzk*qmyxeyoe xma)lf*i es*.6j+l( 8/ nected as shown. With the switch open as sy .slx)ylm* 8 xzm*if(eokeae +6q/j *hown 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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