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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 c bpo2n 7mu -qav2qli//urrent exists in the metal resistor connected to the battery. Which one of the following choices best describes the direction of e/nm p olqq7- /a2u2ibvlectron 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__bbvw)1 t 0*ixj_______each resistor is thejivw1 xbt )0*b 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 ofv;( . gwsa )x f9(etry2bn8ulp a lightbulb causes the filament to become white hot, while the largervw29;a bn.ufg ()tpx(e l ry8s 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 LEDs. LE4:6g, lock axhst b+z-D is the acronym f h 4cot6,al:xb+zk g-sor which 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 leng-/tdo 8-kia0v jyvtpx:q1mqe bly) * *th 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 leng-p*:iyj8v 1 xv* o/y0ql mtk -da)eqbtth 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.27d2 v vz37o5fgz pmx-m ars5l Wire II has twice the diameter and twice the length of I. If I has r2s2vzr7px5l 7-zd 35 g oavmfmesistance 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 materia,)s3. o0tiugwd(ufveulw .8. wjjg b4 l but has twice the diameter and half the length of wire X. If wire X has a resistance of R th 3e.tw.gi (gou4ljw ju,wsfb)0.u8dven 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-jm x3:l8zi:cy ,zqw06don ye has length L and radius r. This piece of material is then drawm6cz:0yj,x i q3e 8-wyldn:zon so that it is a cylinder 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 brighte+qx vc3 mm n+9bm7ydr2r light bulb. He decides to9 cx3n+ +7rmdvq ymbm2 modify 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 resistors are made of the same material. Tm82bti oy c*-ghe length and iy gt *8-mob2cradius of each 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 conni5qqteqn v5 .o8h8v5zected to a battery in the following way: “Two resistors are connected in series. This combination of two res8 qz.o qet585vvn5 qhiistors 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 ie khdt u*(3;ud szxbez73;(mp nternal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. Tp;meh7t (de(kz*;3b3 zd xs uuhe 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 circus.oxb)rn* ( bwit shown to the right. The three bulbs 1, 2, and 3 - represeno.()*x bb wsrnted 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 electrical circuit at the right. If thk cbusza 6go3.;sjz4 +e current in all three resistors is equal, which of the following stasu o4zacb3 ; z+g.js6ktements 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 repre mdo)amuxi omz46j;szh+88 *lm 9m7y vsents a simple electric circuit composed of 5 im zy6s m+o98dal;z4 m8x7vjimoumh*)dentical light bulbs and 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 concerning the simple circ.ssej na7e,h1 6imq3w uit sho1 .6,his3awsn qjmee7wn where 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 connected in kx2)aqqj 3 b;iseries 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 of the follow);3xq qj ika2bing 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 resistor ph0j*nzwz e v/21ng) w. r5fzt in 5 seconds once the circuit wa nzr1zw. pn*j)t5e h/wgzv20f s 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 fo(i/tg5*k.cv ay8 dkluf0 sl0x llowing simple circuit have the same resistance, which would dissipate the greatesd5alcfuk(0* ys8/ .klx gi0vt t 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 w e,+3 v)5febo4o aahjcircuit diagram, the current through the 6.0 Ω resistor is54fa)e3+ob oj,whev a 1.0 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 a0bnhy:rnr( y- re connected in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3:(yn-r0 byrh n.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 cqc/r;g( n0 p dp5mxz 8ftmwf* 6ys5,x0*spfl connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates5 fwgfz mpssxqyl0/mx0cpc*8r;*dpn t6,(f5 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,gc,r heei 3p,. What is the maximum value op,ghe r3,ei,c f 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 601g-l imy :9hme watt lightbulb designed to operate at 120 volts?e hyim g9-m1l:

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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 z 9mybg2+x*i6 ;tlajo4 ohm resistor that is dissipating 36 watts of powg+ z6a j2x;mbo9l iyt*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 press clothes isgvdpj wqlz58 5n66p.aac; s 2k marked "120 volt, 600 watt.” In normal use, the current i 65q g8n.p5az ;6psvljkawcd2n 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 be produced by ae2 o pz:ii31jx circuit containing onx1 p ziio23e:jly three 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 three9 z 8+ph)inirifc r4.d 3h qt*q+jm)ny 1.0 Ω resistors. Which of the following equivalent resistances CANNOT be produced usin t))+qnifhizhr*89 + 3 py djmrnc.iq4g 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 0opjlxj3x1 x-g4 *iszvalues can be connected together in different configurations. If all three resistors are x jjx43 -ip0*zgoxl1s used in a circuit, 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*4 h6(p-nsy(p fvvy vp to a battery, a total power P is dissipated in the circuit. How much total power is dissipated in a circuit if n identical resistors are connected in serypy(pv*n-p6v (sf hv4ies 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 +kg;.0mg * hkfow bclqldv;43 in parallel, the equivalent resistance of the combination is 5q;*3vo 0 ml+4kfkgg hwl b;.dcΩ . 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 th kny3 qq/-4nqxq-f1t g 42lhbzat it has a resistance of 12Ω when operating at 120 volts. What is the minim1nq4ykgh nf2lbqx 4q-- 3tz/qum amount 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 ikt9f9 eo b6-e(nkit 5jo4af 2qs dissipating 36 watts of pow24ij f59enkbfoq o -at9ke 6t(er?

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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 he0v3sgwq/ 9pvyater draws 13 amperes of current when connected to 120 volts. If the price ofwq9y vp/03 gvs 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 2ffdbcj-0 ey cpu o0can3r /ha-tb 53/a 100W lightbulb lit continuously for 1 year at a ra5caef -p 32rc0c03f-jynduabboh /t/te 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 rxh-d xo(ze/k5+ghlwm: idd 9,esults in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of the ,ezdoli g:-/k 9xxhwh (5+dmdlightbulb?

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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*;988o avbr0oo1qu lk ffj9uw7r vxw 4 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 maximum numbekrw 0quoa*ujo84o vf79x;v1 f 8wb9rlr 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 u z++bz7x.tao z-dk5gis connected to four resistors to form a simple circuit as sh-ogtb5z.z+ad+ 7xku zown 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 to form a simple circuit iy/7dx tff+ 4*iyn,oo)n hkx,as shown to the ri, id+ ,oxfkyi*hnx f7nt4/) oyght.
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 i/ ab+n ks -yi6g.hiezp+haz12deal ammeter, a switch and three resistors are connected as s2 eg-z.ya hh+6kb inizpsa /1+hown. 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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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.22: An ideal battery, an ideal ammeterijcq:l+- 7 dk 0t,swqs, a switch and three resistors are connected as shown. With the switch open as s +w0-q kl,qcssdt:ji7hown 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 switch q65bau 7)-qcbxjo i/pand three resistors are connected as shown. With the switch open as shown in the diagram the ammeter req b-acijp5)67/o qbu xads 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, wha(7dd89rw cvcqm b ey,*t is the equivalent resistance? Assume that all wires are ider9m *qd(ydwc7v 8ec,bal, 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-p(r, zaf78by:t hw hd to the right with resistance-:w7 ,y a8pbh( zdtfrhs $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 u/pnt.ywoq: js)mywh; u z82hs(i4+c combination series and parallel circuit to a voltage stz+ )2sus8hn;4m(pyujww i/: hcq oy .ource.
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 ide)t) j0 lzwz+3jj, wkrantical resistors connected in a combination series and parallel ciza +jktjjw3 ,)z0 lrw)rcuit 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 7ks-dk pg4h c . 8ov,dciyr7h5 diagram, all of the bulbs are identical. Which bulb will be the brighd7yks4hcr,.o-hi vpkc 87d g5test?


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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 ammetdkd/s(dbp.5 p/yi *u :p5qs rper, a switch and three resistors are connected kp5p/5(dissd.y p* rpuq/ d:bas 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, ;qs5/ edlu gqr i-8*cic:3xnhd(uq.yan ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the dgu lihq3s/8x5 cdqn;cir qe.y-: d(u*iagram 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 a1+pghyjt2k i wk/6y-a nd three resistors are connected as shown. With the switch open as shown in the diagram the ammetegy ayk-htjw/ 6i 21k+pr reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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