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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 cq 2 6wx:js98ctk 5m(kkv8sz9p7qqki purrent 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 fic8ptq69wp5kqzi9 s2jk:m vx(qk8sk 7eld 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 i)2ezu s1c)4 iahv u/frn parallel, the_________each resistor is the same4)ehra czs u2u1i/) fv.

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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 thvon4d*5v;ms j9 avkm 3;g q:kee thin filament wire of a lightbulb causes the filament to become white hot, while the dj5sm*qm v 3e4 gv;;kavk:no9larger 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 4he-5 pocl- ag y9g1eoLEDs. LED is the acronym for which one 5ehayg-9o-cegl o1 4p 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-secti,eybkr la98v5h*-nc50fimb p/ mxd0b onal area A. It is to be placed into a circuit, bv lf9 x 58h-ec5y0aimb nkd,*mrbpb 0/ut 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 same7cihbn,ik c)1 ,k r/y3c qe2al material. Wire II has twice the diameter and twice the length of I. If I has resistance R, II has resistance7h ne ,ci)yl1bk2cak, i3/crq

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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 sam q:ao9r6vp 9vxe material but has twice the diameter and half the length of wire X. If wire X has a resistance of R then wire Y would have xpv9ovqr 6:a9a 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 lengtzgz2rrl74 en +h L and radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of this material because zrz2el 7ng+r 4of 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 Edisowlh,9bp ,y :lk9x vk;vuuj. p2n wants to make a brighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order t ub992kyu:.khw ,j v p,xvllp;o 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 resistors are made of the same material. 6v zfs3p)(dzkz.y+y hThe length and radius of each rzf v+)k. h(p3 ydyz6szesistor 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 resistorss*vdkbcd 1p* 5q0 tv.q, each of resistance 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 fourth resistor.” What is the equivalent p. kstd 0v**bcd qqv51resistance 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 ciraab/zom7 yzj j bqqkvdi, ffc((,4y.sk1x-,-cuit diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter rvzab,,xmd1yy-.aq/zj,7s ( oc4(qif -bkf k jeading 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 the40 sg3ut8v ivv6j y:lr 3fsye8 right. The three bulbs 1, 2, and 3 - represented as resistors in 3gt vsyiv 6r8j 4l38:veyfus0 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 right 9.mi+ l*iidjz. If the current in all threedm9 jl .z*+iii resistors is equal, which 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 ck 9gllltxpw3-c;k6maq; lzq)9)qy7womposed of 5 identical light bulbs and 2 flac9g)qw6 wk 7mq3plak l xz;-)ylt9l;qshlight 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 statementdzl ;8bo5l/po x ) rchx9)+rljs is NOT true concerning the simple circuit shown whe5j lcx8 lx rrz;b)po+h /d9lo)re 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 connecteo0d8*abq*r av d in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connect*0 d8 avb*oraqed 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 couloml6umehzpw;xxg d q4heish)92 +r *,8j bs will pass through the identified resistor in 5 seconds once the cir)r+xh pws h,48* uh i69qgjzxe2;mdle cuit 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 simple circuithebxpaq bs*. g,/n* 2c have the same resistance, which would dissipate the p* .bag/,se*cxhnbq 2 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 di2ii :n fh;izlted.+r0agram, the current through the 6.0 Ω resistor is 1.0 A. What is the power s0:;iefh iztd.nr2 l+iupply 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 conq w0g4oh1aq+wnected in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 diss1qow ahwg4q+ 0ipates 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 w et558vqfhzmx63oh/connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω,ehmhv8 /zfwto55 36qx 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 pgrv0rd me0 hj 2abr7 p(f7t(; 3wd0siis the maximum valuebfrp tpvsr073da(;7i 2gmj0dw(0re h of 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 resist +2n h,knh/7toeceu 2kance of a 60 watt lightbulb designed to operate at 120 vol+tcn ohu 2ekn 72k/,ehts?

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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 di )qv 0ms5paxnrpc )avl9m;p 8fa51ov)ssipating 36 watts of pow)p5fa0n) ;v 1psmrcq 8avxml 5 poav9)er?

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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 pv.yyj09:ev 1xrqy)r,fgr+ff ress clothes is marked "120 volt, 600 watt.” In norm x,r9 yvjfq1yy reg0r. f)+:fval 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 resbp 6w ,)pyr0ljzw*7cxn d 9*ocistances could NOT be produced by a circuit containing only three identical 6Ω cby wcx*l pow)z,d 06jr np9*7 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 resistorsfqz.) z*t qfr+. Which of the following equivalent resistances CANNOT be produced using all three resistors?f .f+zr)*tzqq

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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 od cwxy 05b/0uqk0gj,ef different values can be connected together in different configurations. If all three resistors are used in a cirbjy0w0/ckgq,5de0 x ucuit, 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 f yb:f fe+ xlho ;g7ug s69.5+u1xytrrP is dissipated in the circuit. How much total power is dissipated in a circuit if n identical re7shext9.o5rff y :g 6;1fg+rxy+l buusistors 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 R2o/z 4 lwwrk.3pky 1dw2,ncov2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the f2zn 4yk w,/pc wdlk.r132ovo wollowing 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 suchdevdo;5m/i 4m that it has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to5/dd4eio; v mm 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 thr+ v;td3dp lue -)ok*tbi.xh5 bough a 4 ohm resistor that is dissipating 36 wax3ku;t- * ihb5.)lbt dopde+v tts 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 amperes of current when connected to 1206o wxa6)o, yn gy8)y )6s 7qheq(ncp(1carm wh volts. If the price of electricity )y6sopqwaec,cam6 nr((q6ow x1y hh7 ))ny 8gis $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 ; s+vi4e(u:.4lsdxr belbi a97p/e0dtr:f ynhow much would it cost to keep a 100W lightbulb lit continuously for 1 year ate9e7 :+x:erssnt( bf4;/ ypl4i buldvr0 iad. 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 currev103-7ikacvd y gx2 xli he.l(nt of 4.00 A through a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of the lightbul-dk (2y1vgexl3ciah7 xl 0v. ib?

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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 gvpz(6iu5q /i a family of six owns a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into a sin q 5zigv/upi(6gle 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 toj ihucu15:uymh m6-t . four resistors to form a simple circuit as shown to the righthm-m1.h cyu6i5jut:u .
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 batterylb- 3mv,wr mz 7r*qy*n is connected to four resistors to form a simple circuit as shown to the right 3 - wb7qz*mrlnvm,yr*.
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 andgf(czo93 ey*az n q4 8vlr1qng9(0gum three resistors are connected as shown. With the switch open as shown in the diagram the ammeterqg9g 3e o rm0u8y(cn 9z n(1qvz*af4gl 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 cond eio+h )yv/e-u15kde nected as shownkdi51 eeo/u-dvehy)+. With the 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, an idea;6f+ gqx2q ofeonmcm4t7omr7h 9vfiww: -6g-l ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram th7 fh9-64nwt vcxm r-mi:o7;ofe6w2+gmf qg o qe 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 resi, +jolayjb cn18*lt5ostance? Assume that all wires are ideal, the batte*ocjol nt8a y+ ,blj51ry 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 resistancfrb1 6:p npo+acg8 lgi; th+/le of the circuit shown to the right with resil+ga 1gbp; /i6:oc ptlnfh8r+stances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 connected in a combinalgc8 z d/wsgd+/;ac; ttion seriesg;gzcc8s t/l;/w+ dda 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 bel4s4zfcb;3fofeq : /tkow shows five identical resistors connected in a combination series anz4qfkotebf;3:s/4 cf d 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 identu+i ),09tzxk u at saoszo7:0tical. Which bulb w )oatou0kai 9 xtt zs7,0u+s:zill 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 ammeter, a switch and threexs+5 br4w;(t u6gs0abnzec m 3 resistors are connected as shown. With the switch open as shown in the di(us z4bn w;5 0rgebt3saxcm6+ agram 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 are je1i71iisevr*z8i( p- tefk 1connected as shown. With the switch open as shown in the diagram th8 7j ti*kz-sei11ereiip v(1fe 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 awi5i:w j+ di gtr*5gz7mmeter, a switch and three resistors are connected as shown. With thw5riwi7z5 + tij:gd*g e 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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