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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 resisto0z jvxb0 lt mr2ep41,kr connected to the battery. W,r42t0kjlpz e 01vbxmhich one of the following choices best describes the direction of electron 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 ac j fvc)bu z19i,t3oum-gzu/cp g44s1re connected in parallel, the_________each resistor i-u b13ijoz/ gvcc ufug tmcp4 ,149)zss 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 through the thin filament wire of a lightbulb causes the dbnifl;*+r (xyk)qy ;filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. Thisbx i;)+;y *qyr nfl(dk 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 ligvaq8if8tekd (m:lkumnk) +:, 2iiuo 1hts are being replaced with LEDs. LED is the acronym forauf 2m+1km o:)l8(:ivi ,ukdkq ei8nt 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 gfpnmh 7bqp- jk.* /zu:noiu+ 4raphite resistor has length L and cross-sectional area A. It is to be placed into uf/bjqn m o7ph4:in.u*zkp- +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 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. Wire II has twicgu j kr:e+9xai8+,( uai oyk;ce the diameter and twice the length of I. If I8;ke+9 , ro(x+cyjguiik: au a 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 /07.rrmy jj5vw7,rpa whs )trbut has twice the diameter and half the length of wire X. If wire yr w,h07t5pw r/vj) 7rrajm s.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 L and radius r. This piece of matek4o7ipantl*z+woij y1 :h ,b 6rial is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of this material because of th,4iat*hj7 klb+oz n:6piy1o w is 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 bulbh;i:lb/ xrr jj n/6pq*. He decides to modify the filament. How should the filament of a lightbulb be modified in ord xjjrnhbl r;6pq/* :i/er 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 resis( v6p)tvk2s ybtors are made of the same material. The length and radi2v6pv byks )(tus 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 connected totu7d0znr*vx/s-3to9 mtkj,/e d sfi1 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 resistance of this d/tf9 xtr0 mkt d7v s*-e,uzs/ioj31narrangement 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 kcefa-e*dga,uv 5z )fwc6e7 )in the accompanying circuit diagram has internal resistance 10.0 kW and the ammeter has internal rg),z-)v* wfk 7caeafeu5dc e6esistance 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 showjm i+atq:c5 (en to the right. The three bulbs 1, 2, and 3(c tei5:maq j+ - 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 simple electrical circuit at the right. If the current in al h37g ;keh.ovi8p3 cwnl three resistors is equal, which of the following statements must be tru ow;3cp v7ig3hhnk.e8 e?


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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 ve u3xj7lvjj2rn 0qd,.a +, kqright represents a simple electric circuit composed of 5 identical lightvkajr 3n ,q7,.vd+2xj 0uqj el 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 concerbz)2*ghh j8sxr trg)5ning the simple circuit shown where resistors R1, R2 and R3 zhrg b hx)58trgs2*j)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 u1k8 +ztjrwd) are connected 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 choizkturd1j +) w8ces 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 idhm9dun o94 ,*zl pp7dqentified resistor in 5 seconds once the circuit was clo omz 4nu p,dd9h*7q9plsed?


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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 resistorst+qt/v2d njl)2 ljh u6 in the following simple circuit have the same resistance, which would dissip 2 jh6tuv/nllq)t jd+2ate 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 Ω rqimi; kg/f;ui32 to79fj g/vhesistor is 1.0 A. What 7;32i mv;ihto g9/if/jufqkg 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 connu85nzd n7sld1ected in series to a battery. Suppose R1 carries81nd u n7s5zdl a current of 2.0 A, R2 has a resistance of 3.0Ω, 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 )6bfpr2 n kqy2R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 )nr2qkbpy26f 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(iv2f8mvibc8zx3c* b k;rd.j is the maximum value of the current unk biczv8. m *;3vd2irbfx8(cjder 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 lightbulb designed to ope:)j8e8dsg k wjrate at 120 vk djjw:e 8g8s)olts?

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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 mv6)si sajzvkf3oe b9e:a /skh8-,:s a 4 ohm resistor that is dissipating 36 watts of power?esz v/9 fb36m8- s::iev ,jo)sha kask

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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 "120 volt, 600 watt.t -tgeotnf44d 8ny.xnkt 8u4 6” In normal use, the current . e6x4fnnt48ogktt- y4un8dt 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 circu6ovc:z 5s; o-lql.qhy+s;qvm it containing only three identical -zs mo+yl lqq sv6;:5qvhc. o;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 equivalent 5z0v) v y:owrv-6,yed;qt ruk resistances CANNOT be produced w;t)k-r6ydr veo,zvqv:05 y u 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 different5 b,qe m lk*r+mdg6luws, 6f/rjz1h,yjv7h-t values can be connected together in different configurations. If all three resib5h7r-td y rqmskzw /1j6 mll6jv,he+ ,*uf,gstors are 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 to a battery, a total power P iesf+ky mcb /,(ao2 lt8s dissipated in the circuit. How much total power is dissipatedyo +k(l2bt,/m8f sca e 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 resistance R1 andx6xwkz te(5u2.y *zfq R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Wyq(xu zz ftx k.625*ewhich 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 itdopa83/ t gslk)l. i9v 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 watlak9lv o8g/d s3tp) i.er 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 cgonw,i jx 2r*74o(( jdpfsr+ is dissipating 36 watts opr,j+csd 427wnojix ro ((*fgf 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 connectyluz73mxel m/ w*(5wied to 120 volts. If the price of electrime3w7 zyl /xu*li5m w(city 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 lightbulb litux (ku t,otg96 continuously for 1 yx6uk9g(tu ,to ear 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 lightbulb results in a pow++jkd3lj ws 70kb:pmwer of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance kmdk+ :7 sp3l+wj bw0jof 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 p zmc6n+ hq5ar58y;bsowns a computer rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected by a 20p5q ;+hm caz68nbrs5y 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 batterypy9 ojgbf/ 1;99elstudu.ez 12he.yh1japd; is connected to four resistors to form a simple circuit as shown to theyj91 1sbp.; 9zg/l t1yuuehjh; e2a.fed9po d 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 f1s z0t: 6 jc7csppdzp:our resistors to form a simple circuit as shown to thejtcs:71 60zz dppc:sp 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 thrr;a14eyjc k6 w tk2f(qwov4um2xz6 e*ee resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 azfwrvwa62 k oyj u2mt;c6*eex(q4k1 4 mperes.
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 connf5li jk ;4y8eiected as shown. With the switchjiikl4f5 8ey ; 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 switc rk 5ty3ei j;unug1;b2h and three resistors are connected as shown. With the switch open as shown in thyug ; ;3k 1rju5ni2ebte 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 resistan b1t* f/64 *h2jchyoegt: htobce? Assume that all wi1*h:/ tfh* ttohbeyo b2gc4 j6res are ideal, 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 circu h37f8yl3w9d 2 8bjkvkkyu(f hit shown to the right with resistyj khhlu3 8kyw(8bk d293v 7ffances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 ic+ o 0aee1kp a2bi -v6 ayf*tqlb9iw9*n a combination series and paiayvt e0a+ o62eb-fpikc*bl 1*9qw9a rallel 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 five identical resistorjdq;g.+yc cq:)w- (jnisfa0 as connected in a combination series and parallel circuit to a voltage so ys;iqwj)f+cjqa .0-d(cna g:urce.
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 identi:k v x .t3ihvom,5+oqncal. Which bulb wik q:,mxoh5 v3 o+ntv.ill 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 idebnw;6y h*sw;t,djp n3al ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0;nts b,*yn 6jhdwp 3;w 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, a: wpjw,lt 5owes,g;y1n ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in th,l twp 5os,; jy:1ewgwe 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 and three resistors are connt+g.n zx9tjp5 z+m sg87 ulymo sa7ce0v*l+ p;ected as shown. With the switch open as shown pe;mjpm 7t0u+za+lcs tlz 7s+5x9g .* g8vonyin 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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