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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, an electric cui2gc rkb96cfc+dpn 10 rrent 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 the direction of the electric field throu+i kr9cg2n6cfpc 1 0dbgh 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 connecter7e.( r3aa:,i m5je4gcs ozrsd in parallel, the_________each resistor is the sa ee rzmscj ,gar5a(4sr3io:.7 me.

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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 o as o,oy:c+hpiy8h) 7o*4qw fof a lightbulb causes the filament to become white hot, while the larger wihy o+f:4ia) , hqos7opow8y*cres 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 househof 4e c+cpy8bs5ld lights are being replaced with LEDs. LED is the acronym for whic 8 spf4ec5+cbyh 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 amz50mg+)t h3()vtunal8c)axl qrj1 m nd 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 resistivlxc)m0 u hzlvtat)aj 8)qr( 1n3 mmg5+ity 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 Ikxot y ,qitw .)y+kt1.I has twice the diameter and twice the length wt.+x )1 ttk.qk,iyyoof 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:-ezx k2 )ylle but has twice the diameter and half the leez:2lel)-k yx ngth 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 cylindrical8q2rhew 1n q2g resistor has length L and radius r. This piece of material is then drawn so that it is a cylihg1wn r2 e2q8qnder 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 brighter light bul + vz) vu934kfibvqn9xb. He decides to modify the filament. How should the filamenz9f +v4k vbx)v9 iun3qt 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 reaw xw5j.ue4 ,uv nv*a4sistors are made of the same material. The length and radius of ea* ux44wjn .v5a,aeuvwch 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, are connected to a batt.(n ohqrjk r:9ery 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 fourth resistor.” What is the equivalent resistance of r9q .(hjno:kr 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 resi, cfd1dz9g-l;e j93u,4q zl ghqvf5qestance 10.0 kW and the ammeter has internal resistance 25.0 ohm. Thl1, q;4hg v 3zdz9j9edflqqfc u-5e,ge 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 rwp0wk x3ychg4; 71dlyn .6kfto the right. The three bulbs 1, 2, and 3 - represex03.glwhn7py; kwrdy1 f64 cknted 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 simple elex k6kab;( x62oz/nv voctrical circuit at the right. If the current in all three resistors is equal, wh 2v/ 6kxb6;vxnozo (akich 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 e (ll :*4f nqexf;d rg/;(wth4zlij,qcircuit composed of 5 identical light bulbs and 2 flashlight cells. W( z;/df(*4qlneihexg; l,j4t : rwqlfhich 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 state5 z9o nur-p0quments is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 are 0o zpuqu59rn-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 l+t2.5 fwilhdm d bh2:connected in series to a battery. Bulb X is briglh d i+bwtd.2h:mfl25 hter 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 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 thw7o3 nfvw*if.rough the identified resistor in 5 seconds once the circuit was cloi .w* w3v7onffsed?


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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 cir9q,nv3o vatv:ztb.+j -fqq 5acuit have the same resistance, whichvaq.v3vzb9o-tqf tanq,5j + : 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 3 p5 k5s6(vcslwc rf/aΩ resistor is 1.0 A. What is the power supply voltage V? /swc p3sf( a56vcrlk5


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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-1lq xc7xnmfu4b f7 0v to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R xb-n4m7ffc l 7qx1uv03 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 andR3z 5mk4k.k4l; hkyu.+ppx*dyx are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What is the currekkm* l x;+5u .4kypxz4ykph .dnt 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 120y9xxck:pw8bq)p0gw :h jy, ,c volts. What is the maximum value of the curren,pw)hqbx c kyy0:xj8 g, :pcw9t 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 resistanm irisp0;b7wt/ b4ralf5 88hk ce of a 60 watt lightbulb designed to operate at 120 w8blp;r/k8i fr0ibta m7s h45 volts?

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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 46k,mk 2a3abo8bu djoohm resistor that is dissipating 36 watts of pojaodmb 3a , k8ubk6o42wer?

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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 "12/ g r6t.orh1pl0 volt, 600 watt.” Inph/o6rlg rt1. normal 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 foll8 i.m canq;* n3;m i-dixm:clgowing resistances could NOT be produced by a circuit containing only three identidg:i8qcin; n. *am3-m;ixcl mcal 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 ey1*pliw qe)j rkd;v cv 8i0+e*quivalent resistances CANNOT be produced using all tq0i k8r)*yj*w+1 e ;vdv elpichree 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 di+hje;v8k0ues vupg3. fferent values can be connected together in different configurations. If all three resistors are used in a circuit, how many different values o g.h;8v 0ejus+3ke upvf 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 n5/) c6b (u fnceohwo g6j+;gcto a battery, a total power P is dissipated in the circuit.+ e6u6)nhjfc(/gcg5n; oboc w 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 resdn6iceggo jw q7l6 2 r/:kjxo29jtc- :istance R1 and R2, are connected in parallel, the equivalent resistancitn k:jgl-rd7x66 2q/gcc o2jo w9j:ee 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 itpy7 4bbtqwc gh(6z o69 has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.45 kg of water b(o q gph6byw4t769czfrom $15^{\circ}C$ 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 res6 uyrvug.+cor n 2d- k/i7rg5u2 gahi9istor that is dissipating 36 watts9ug6 /-kdrhou7 + g 5vyga r2cnir2i.u of 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 ak6 8t4lod;5n6 v9ba o8m*advwydo p(mmperes of current when connected to 120 volts. If the price ofmdo(*a8a8y5mlo bk66 d4ov ptwv; 9n d 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 lig/mg(zul. 7zp0 ny.d krhtbulb lit continuously for 1 year at a rate ofylg( n z u/z0m.7dpk.r $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 resul f:5vlr 6y:kc;6r yr; gxjjd2jts in a power of 24.0 W associated with the bulb. Which olcyrv 66rkxg;:y rj f5:;jdj2ne 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 computer rated at 500 watt8 g,nmft,e7e8 w7okstfeg0-is 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 ge 7t87t,f0 m-f 8nwekgoei,sof 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 res7mxlv6o65 od lnhl5/mistors to form a simple circuit as sd 5l/o5on6ml 6xmv lh7hown 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 resistors trijr-- ve.s 4co form a simple circuit as shown to the right.j4rsc-v-er .i
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 ammete9rlcq esu 5nui-s554jr, a switch and three resistors are connected as shown. With the switch open as shown in5unc9-4eu55 ji r lqss 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,+ ogi;smof4mg4x nw 75 an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeterf go7sw m+onm xg44i;5 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 switch and three resistors aji dd;r:/on6 sycrx .8 -eu*x dc(qkw8re connected as shown. With the switch oped* d:8u6 kors q(xj-y/xc.nw ;ied8r cn 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 resistancerlmobxk3h) 3*u4u x.3hgo4 y l? Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have identical resistance R *yx lohux3hgb.km4) u4ro3 3l.


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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 resistan 30l9 2aejmsjevab0 +jce of the circuit shown to the right with resistan0 el3 ba9asj0vj+me2 jces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 x1p4kri -p4(hhn z+d(lub0cp 4 :tukyconnected in a combination series and parallel circuit to a voltage source. (p 4k-zdx +k0h ptu14h4ulbr(iynpc :
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 a2 hqx/7o(b,pm4yd bg five identical resistors connected in a combination series and parallead/,4 g27xbh y(omqbp l 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 t/cylvl;v. ti25 0gb/m7hre*kc 3edtmhe bulbs are identical. Which bulb will be t tc5imbe;e v2 l 3ldr0 .*/vmhkt7yc/ghe 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 resis8rn ak7 xuuv.o6(zg o;tors are connected gzna( 8ruk76;xvouo. as shown. 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 idevv oa1dfpn7l 33vy4+eal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 am+o4dpf v n71laye3v3vperes.
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 a*, 5rtqm3y51dp +4vm3d ki jrnd; ji1m0imhpvnd three resistors are connected as shown. With the switch open as shown in the diq* y d0mir1mv3;vpidd jhp41,+53n 5kj mrimtagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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