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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 fquyg bfdhd5.u4k65 +bhov/ ) shown, an electric current exists in the metal resistor connected to the battery. Which one of the following choices best describes the direction of electro u5 d.bq) of bu/+d4hv6f5yhkgn 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 arnq/ uo*4n yniy8 k)x)zoez ;y;e connected in parallel, the_________each resistor is thniyn kuy;8 *)xq4oyz;ozn/ )ee 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 xj *qw 87kmd awrf87,efilament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the light 7mfk7dw8 qxw, eja8*rbulb 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 7l( ,twgkv0x khousehold lights are being replaced with LEDs. LED is the acronym for which one of the following chxgwv (kkt0,l7 oices?

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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-sectiona )s9,sei evs50qtbrp6l area A. It is to be placed into a circuit, but it first must be cut in half so that bss5,e vr)i 06t9q espthe 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 ;w15jz rq*k-h1s cmmjof the same material. Wire II has twice the diameter and twice the length of I. If I has j1hj 1;-zqrm5mwk cs* 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 twice the diameter m+-0y pm)pwhoand half the length of wire X. If wire X has a resistance of R then wire Y would have a resistance owyo-)+mp pm0 hf

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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 L895c o;iw ebsv and radius r. This piece of material is then drawn so that it is a cylinder with new leow5se; 98c vibngth 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 decide)cpt v.7d j tgr:bsa61s to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb produce more light dtvra.)6t 1 gcbsp:7j 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 are made of the same material. +cvo1j *eip7p The length and radius of each resistor ej 71iovp*+cp 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 2;kdwp8ld/mp a battery in the following way: “Two resistors are connected in 2dd/8wkp; lpmseries. 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 diagram has internal re 8 .ib- b 2ra92gllq/ ix2j9r(fwemwzesistance 10.0 kW and the ammeter has internal res82.2 r9rflmj l q -ewb9bi/ae gz(xi2wistance 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. Tha7x.* mnjm5q1pds q2ue three bulbs 1, 2, and 3 - represented as resistors is*5ad2 q umqm71p. xnjn 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 eb8i 4t(1riqw(x g gy;if4xxj4lectrical circuit at the right. If the current in all three resistors is equal, which of the followixq 4 4ir8x;gy(giw14 jiftxb(ng 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 represez)e -tjw,z5 asnts a simple electric circuit composed of 5 identical light bulbs and 2atz,es-jz w) 5 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 statement l-y.aon4u op,s is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 are hav-l uy4o ,.noape 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 series ed40crqwt/ gq ru:l)*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 ofdr:ueq ct/)glrw0 *q4 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 identified resisz ik0;22hrw g 53delget;6fcetor in 5 seconds geefi2rlht06cdw5 z ;;32 keg 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 resis/yda 2p tnsl81udko 6-yny2(gtors in the following simple circuit have the same resistance, which would yny1gl upo(d8nt /y2 ak6-s2d 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 accompanying7zb;lc6r+pm k circuit diagram, the current through the 6.0 Ω resistor is mlz;+6 pck7rb1.0 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 R3 are h.h h16ctxql1 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..tqxhl6 ch11h 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 pa:(0q qqwxru5rv+ 5la5*b qzxkwc/e. b rallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. Whaq0wuxzq bb*kr5wrl5( q+aq /5ve.: xc t 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 maximum zggqgie( nk.76vd * v6k(/kh 5 segpm-value of the current ue z5iv/(k p.vnq7 g ( m*66-gsegkhgkdnder 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 lightbpi:*)fdw.-h* )qv ebc afs b.uulb designed to operate at 120 vbvw*q.)fh-u*b p:ca .eif )sdolts?

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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 that is dissipating 36h;j r1*as.gn3qh g19ovo sa0s watts os9q osvha 3hn01r gso.*a1jg;f 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 bz9x4x1 p25ga2ph dm o"120 volt, 600 watt.” In no5go9b2xdzhm2 xp pa 14rmal 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 bt n3kzk(zhjnq ;85yn(e produced by a circuit containing only tkztj5 zn;n(y3(khq n 8hree 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 equie nmxx* aou/nl+wb51v;u v -3y, i-hzxvalent resistances CANNOT be produced using all three resistor/xvn5 ai*,bevw mz+ xhl yx-- 3n;ouu1s?

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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 kg. nni rl:i65xl+ h:hvalues can be connected together in different configurations. If all three resistors are used in a circuit, how mnl gn: xi ki:6.lhh+5rany 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 tp;te. v2 ke ttirb*;d3otal power P is dissipated in the circuit. How much total power is dissip;d3pb2; .evt t tr*ekiated 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, hab9hd16j0 h;oyukw:(ak l( lat ving resistance R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω hl;uak(jk a lob0 6d:y(tw h19. 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 r,y z *y07 zsp,m*f-c4v oytuvof 12Ω when operating at 120 volts. What is the minimum amount of time that it would rs7*u-my * vyv,,yftz0pc4 oztake 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 oh(e28o hrqli a8m resistor that is dissipating 36 watts of poiloe 8(aqrh8 2wer?

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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 ampere2zn 3pt)f 7qhzs of current when connected to 120 volts. If )qfh7tnz3p z2 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 a wah-wfe7y; 98wu7 k qm100W lightbulb lit continuously for 1 year79eua w8-wf7hyw;k qm 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 current of 4.003bf*jbjtoj is, m)bmr/ euhy1/*jj72 A through a lightbulb results in a power of 24.0 W assoctj 7bi m) j/m1b o *23ehb,jru/sfy*jjiated 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 owns a comr g3 8t 7gs13w*lzceu r8)jitaputer rated at 500 watts in a 120 V circuit. If all computers are plugged *3egr7ul3 8ti1j) tzcsr ga8 winto a single 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 fourugqg+ my 2(,bw resistors to form a simple circuit as shown to the(wm,ggy2qb +u 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 lx ;l 5ffu/ owbn1+y-tto four resistors to form a simple circuit as shown to thexy wtb1uf-+o/l ;fn l5 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 res(lbw2ubfv ( 4zc9 9cfp3xi l-bistors are connected as shown. With the switch open as shown in the diagram the c4(bixv9l( pfbfuz9 l- 2w3bcammeter 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 resistors are ( + r6r (0e mpf8+j4enlb7dnwhiso7fi connected as shown. With the switch open as shown in thel8njo4wf +76( hi0 pmn7birdre+ f s(e 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,jte kuavsj kq -.i;7ap+j33d1 a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter re+i 3aj;ak3v1pqu.-k sjd 7tjeads 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 equivale5du-dc )eec9z nt resistance? Assume that all wires are ideal, the battery has no internae cd-5) z9ducel 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 circuatybb, n79rh xr8w s4j 8vbpn3(qx (5cit shown to the right with resistances hxrs8n( pbb84 5vtxy,379jancbwq(r $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 identg jf9)be jva-8s3o kl77 2fmliical resistors connected in a combination series and parallel circuit to a vol-so2a j ij3lb)e vl8g779ffm ktage 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 in a como/,l rlqj -(e 2rkmeiril;+;vbination s+;-rl eoi;v/krmliq(r l e2j,eries 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 bulbs are identical. Which m h qvwxa no0b/i 5d09:7l:8z1tcormy bulb will be the brigh oo 1nzi0qv98tc /0:y7xwrmbah5ld:mtest?


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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 t+y yj1z/b0z qol4zpc +hree resistors are connected as sh o1cyzb 4y+0lqzp+z /jown. 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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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 areq5r7 7cl chlg8u-e.:mlieph ; connected as shown. With the switch op7;5i.gh:7mp h er u l-qc8clelen 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, a switch abru.vmz*e3 * tnd three resistors are connezt.vur **ebm3 cted as shown. With 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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