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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 resiston lfg3e:k3 jerw3i1p2 ;3gesbr 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 si2g wf3:g3 1enb;e p3lk3j reelectric 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,nba+v5*t gt fc18 fr4/mvo9 sf the_________each resistor o*1bt nsgrcvt/+5 9vamf f84fis the 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 thro*eu l x(fv0)hfugh the thin filament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This happen 0ef)huvfl*x( s 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 beij3;pzh8,zt*pu, pc8smbf6 fv ng replaced with LEDs. LED is the acronym forf *3m btf,shj ;pp8pzuc, 68zv 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 dovs p4 px;2k ,8csggw+)*btvresistor has length L and cross-sectional area A. It is to be placed into a circuit, but it first must be cut in half bps*xt g8w4v , sovdg+)kc2 p;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 madgm:gyu s88z * a1lk1nve of the same material. Wire II has twice the diameter and twice the length ofa z g:n1uylmg*v 818ks 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 butv) rzd *(nsig2 has twice the diameter and half the le zis2)nvd g(*rngth 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 k6xykzh- 1 / oiwa,zg(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 becaxzkh,zw / o1i k(agy-6use 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 l +jn /* tgkbynnf9o5*jight bulb. He decides to modify the filament. How sho nny/9f+gt*jj kbn *o5uld 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.dhj k f+ v0 lk;3pw) (1ilnsw/eul*ibr)v3ja material. The length and radius ofwk*vl r/d+ si)lk apf)3j .3he0wvn i jb;lu1( 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 connected to a battery inj4p cxjctnl g*a27d70 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 equiva0j*ca 47 xd7 lt2cgpnjlent 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 inm nl5sv(- ,d9untt6:hw t 2xtnternal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter reading is mostnd6m9l ttvx tws-ht:( u,5n2n 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 compkez 6 aeb:x,n2ound circuit shown to the right. The three bulbs 1, 2, and 3 :ae6eb, x2 nkz- represented 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 simp.;3y p4hhjz situc*o ,le electrical circuit at the right. If the current in all three resistors is equal, which of the following statements must be 4yu.z ,tsc* i3ho;phjtrue?


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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 rnz0p 9l3d 7ajlepresents a simple electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bulb (or jl9a0z7 3pndlbulbs)
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 follow-zyi ev nu8sud7l k1/.ing statements is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 are have equal resista iz1dk7e. u/u -nsl8vynces?


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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+og.-jd)we8vm dkdb - zl5p-y 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 of the following choices best represents what is obsv-d5dd.-kl8 e) p-ozg+j bwmy erved?


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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 5 tdigumjsa 7 y+jl(6) will pass through the identified resistor in 5 seconds once the circuit jdai65 (tsmlujy)7+g 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 circuit have th3 mj1lgtfq, 5he same resistance, which would dissipate the greate 5l3,gfmq1t jhst 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 circuitl:eklx j mc9 vhv9/:t. diagram, the current through the 6.0 Ω resistor is 1.0t :l9 9.kxljv/:hv emc 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 connected in9ue.mts1su59 naw/b o series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3unea5 usm9.1 o/s tw9b.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 resistorse 5t9,i:ets6 ee92hvb 4bny72wfj-r)sevemj R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. What is the cubivjwt97 mt5j:hf, neys-e9e)b rsv 2ee e462 rrent 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. dnc p6l,q*spj c dj)/*What is the maximum value oj/*)pnj*6c, qd d spclf 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 lii5+azqv ;+i neghtbulb designed to operate at 120 vol e+v;iq izn+a5ts?

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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 iwud a1tvp 4 fb*buq4xr; (2xw+s dissipating 36 watts of bf4qur*w12xpt va bw ;u d+4(xpower?

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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 cn+u s1,mxx; 9r yg5ac:h ad g1z,ekbp/lothes is marked "120 volt, 600 watt.” In normal us9+ m5yaaxc ;bxdprk,z:gge/h 1u,s n1 e, 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 be produced by a c +2p(*htxgqm :w6 6g/l ggtqduircuit containing only three t(2gqw*qm6l/ 6+dutg pggh :xidentical 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 resistr t9wjsmm+cr dol)1vw) h 9*z,ors. Which of the following equivalent resistancesm*j)h9 z) r9rwmwo,1vl+stdc 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 connected together mi 38h:tg5bub in different configurations. If all three resistors are used in a circuit, how many different vhi5: 8tu bgbm3alues 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 r2m( pv e. m4*z2axqonpower P is dissipated in the circuit. How much total power is dissipat(mn m2pxeor2zq .* 4vaed 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, hl7l8*cwf0wq nw 7*dlse 0nm1q aving resistance R1 and R2, are connected in parallel, the equivalent resistln 77wl0n0 efs d8cwl1* m*qwqance 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 it has a resu m/+n15y idxm,vrny* pnar* 7istance of 12Ω when operating at 120 volts. What is the minimum amount of time that it wou1+a,d uvrm ry nixpny *n*5/7mld 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 thr5hfob, -y;o taough a 4 ohm resistor that is dissipating 36 wa;bh- oat,y of5tts 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 1:h g87kjeob9 k/re hxwsx-c) ,20 volts. If theex:- o xckj/), hkhwer78 9bsg 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 izo t:e0s 5hbpkm*)n9o t cost to keep a 100W lightbulb lit continuouslt 0n*sh:opo)z5 9be mky for 1 year 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 4.00 A through a lighto;hhl27lga. 5n9ttv *uud6emf, ny +tbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of the lightbulb9h,gfleu6;htav 5*. n7+ut2noylt m d?

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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 owposb22;o-b/t 2 e tszs/dawx m f**q-mh+h3uzns a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protectxbt2szw q-ad;+ os 2 /2*bzu/3pshf*eto-mhmed 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 resistors to fo/curd281j6/hup gs9 (ilusf yrm a simple circuit as shown t /h yj6f8rd9sui1u /plcugs(2o 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 resistol9y 6vqxdq, -m+.xv avz;wp v s2z5t;jrs to form a simple circuit as shown to the rvvx; w azt 2. l6y;p mvj-sz9vqdq,x+5ight.
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, adp c oc *nn+2l ibrffi9) +;0epnq9x,q switch and three resistors are connected as shown. With thq2c bqnflx*pdf+ner i0;cip 9,+9no) e 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 id hvgeh9ubg l; nsch73; e46wx f6dlk(3eal ammeter, a switch and three resistors are connec;3 vf 6hlxk7h69 gscweuh; dbn4elg(3ted as shown. 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 ideal ammeter, a switch and three rest hygai8)(r70/k x etdistors are connected as shown. With the switch open as shown ihg/ 0tr)e(y7 ixtka d8n 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 equiv/y4zv59egf+:8c ( h czifhitcalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all 84 g(tvc5c fz9cf+:zihie/ hythree 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 to theg44128zcjltv58fuh jxd * cksw 2co y3;ywu4k right with res8o h5k4 yvuc;ct182w2jwy3*xu g4kd fclj4 z sistances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 ide v3lfr-2 q2zdhntical resistors connected in a combination series z 2ld23rf-vq hand 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 below shows ;ji/ yqn/cqez iix;i;m3+7aw five identical resistors connected in a combinatie c 7mi ay;/3/wxniq;jq; iiz+on series 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 identv;i c; v +2g( c.vztoeec vl1;7jukgfl.zy*5nical. Which bulb .cz*uec i;j.5vg 17v y left(+lc2vk;vng z; owill 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 swi 1 tedllj2r,7btch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter 2,l1etlrj7 dbreads 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 i-;uny8guo)help 7b o) deal ammeter, a switch and three resistors are connected as shown. With t -eohu7gy))noub8l ;phe 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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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)th4-rxzjgm0/ fdk6y sgxq 83 switch and three resistors are connected as shown. With the switch open as shown in the diagr)z tr -0/hxkqxgyf4 gs36m dj8am the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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