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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 shd 4kasp(qri t/uo- j/*own, an electric current 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 directi ( di qj*skot/ur-a/4pon 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 connecw 9j(eaoi27vc1 kp;o gted in parallel, the_________each resistor is the sa9 o i7v1gekcowp( ;ja2me.

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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 throui:;ny ,(d y g)4+hzfw rkmut,fgh 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 happens becndi:y gr,u(, ff+ yk;4)mtwhzause

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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 be8h ud-emudad*o 0e;a;ing replaced with LEDs. LED is the acronym for which one of the foll mdh;de-e80;oduu * aaowing 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 10vcneb c5f *rand 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 is1cn *0e5 rvfcb 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 m6nufu ,j.e6lgade of the same material. Wire II has twice the diameter and twice the length of I. If I has resistance R, II n 66u ,j.gfluehas 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 mam/ 8b )3lhuapzterial but has twice the diameter and half the length za3lmhpu) /b8 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 7w:.+k6 x tftk.szr 4e jvhsy.length L and radius r. This piece of material is then drawn so that ix:t7wzs+.sk reh fvkj. .64y tt 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 Thomasg l ;* jhljv19y8)b zh4wi 4uz1dwlyc8 Edison wants to make a brighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb produce more light at a given vo91wjzyz4 1lugh8 jb hc*)4 8yil;lwvdltage?


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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 resistorsf gdz*,h7g5t h i-yu0)uusqr; 47wl gl3hp6tk are made of the same material. The length and radius of each resistor7k0it*dfg;gqr3lhh-su z6u 4yt7u w,h5 gpl) 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 in the rcn ,/h kf0sw2 ob+sqf-z-y3l 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 arrankyfc z3,/ b f-nrhlos -s02+qwgement 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 resi3w*b(. l(ricw fi,r zostance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeter rerw., (fciw *o(z3rbliading 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 cirvudgr0wfle.gbqo f a5 0e(89 .cuit shown to the right. The three bulbs 1, 2, and 3 - represented as resistors inv0 ge.g0 qr.b lufd(5 9oaw8ef 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 rightzr,wf .z-c:ne)yktgy:j6e y4. If the current in all threkc4.n,e)ry e f-z:yty z g6j:we 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 simpl;eq6 pe6*m xrfe electric circuit composed of 5 identical light bulbs and 2 flash xe ep;f6qm6r*light 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 concern:hpmgto11g jnq 5tcda 7)(b4y ing the simple circuit shown where resistors R:(45ycpbtg1m) t7njqad1o hg 1, 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 3elihx):i+y z 1nkw*e 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 connectenx i3yw+ze:kh*) 1 lied 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 through the identified resistor i xze5x* ni0j)wux0v4n br51o un 5 sxv5x 0rwu)bi o* x4z01nue5jneconds once the circuit 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 resisto2o7qs1-y w7jgucn0ms t/kn ; grs in the following simple circuit have the sat17jsq0ncgok ysw gn/m;7 - 2ume resistance, which 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 circub mrt2/ fu7u.kit diagram, the current through the 6.0 Ω resistor is 1.0 A. W./ t72 ubfrmukhat 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 connecjd vq2+i, kiq+bm4f,ated in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistanc mfjdvq i+iq+4,akb2,e 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 resis2-cib9 -m-nmf q27c la-gew1v8ih/hp d.liw r tors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 =e9wi1.2l l-h-mv bihd7 cr mwagqfnpc i2--/8 4Ω, 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 ratedf*+m :zk2q(;tz (fr sm:oxq g5ck,uly 1200 watts and 120 volts. What is the maximum value of the current under theselrx5qk;qk2 c:gfz +f,ymo((t :umsz* 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 desig0q wi2icyan 6y 6)vx+1pwcu,v ned to operate at 120 volts? cw6 vq+y)i2 yavix,10cpw6u n

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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 1(/ ,jruyzgoc ohm resistor that is dissipating 36 watcyj, /z(1og ruts of power?

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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 ps9ivraq al, e+ w,d1xm:m9 q,dress clothes is marked "120 volt, 600 watt.” In normal use, the current in it i,d rxa:1q,+ a9de,svlm wqm9is

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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 resistance.c 5bt ,t1csqzs could NOT be produced by a circuit containing only three identical 6. cts5tb c1zq,Ω 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. Which9// ,orsplhuk65pdi n of the following equivalent resistances CANNOT be produced using all ph,9po/k5 dl/sri6un 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 in diffj46 ba g xhgo+. 5t/2vc fs+wrze;fip+erent configurations. If all three resistors are used in a circuit, how tseb a62xoh+ .z+g wr5if 4pgf+/j;cvmany 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 re 5u;wyvk-: fpbmapudu3zp e 05f h6+.ssistor is connected to a battery, a total power P is dissipated in the circuit. How much total power is dissipated in a circuit if n identicuwukvyph5 map5e d f3 ;psbf :0z6.+-ual 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 and R2, are conzv(efpr 6s tv9q9g1sep3 6)ffnected in parallel, the equivalent resistance of the combination ipe(rtzs3 q) 9f6gf 9v6esp1vfs 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 resistance of 12Ω when p, qkrq0)8ahvoperating at 120 volts. What is the minimum amount of time that it wouk)qhv,r08p q ald 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 3++wolqhgf (*- k-i, feveef ftjr *l/through a 4 ohm resistor that is dissipating 36 watf* t- (wh v+kefgl+l/qjfr3 i,fe* o-ets 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 heatej5e3c( ey z k3gos3x;qr draws 13 amperes of current when connected to 120 volts. If the price of elec;sx3yk 3 j5qgze(3ecotricity 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 g(lyl /*k-oie to keep a 100W lightbulb lit continuously for y-ol/elkg(i*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 xx +q-kkz n+;3pi:w8tsjnib9 A through a lightbulb results in a power of 24.0 W as:i39 - xt+j pqxkns8zk bni+w;sociated with the bulb. Which one 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 watts in cj(s;pzb+c+aq ,9 x epa 120 V ca+sqep(cx 9+,zj;p b circuit. If all computers are plugged into a single 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 v8z, (0x*ft+9syvw .bsg qvrx connected to four resistors to form a simple circuit as shown to the right. rw8*xzb 9 x.tg,0+svvv( yfs q
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 connectnly v-ie1 ck7 49uxy1.pujzl)f 2mc(fed to four resistors to form a simple circuit as sh)-zx fj yivly9411ul 2c.fpek(m7uc nown to the 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 andtxas97e/vd2ino- 5r u three resistors are connected as shown. With the switch open as shown in the diagram the ammeter res9x 5 /d un-27arieotvads 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 -ww/; ivkw9 hcyv:qb6resistors are connected as shown. With the switch open as shown in the vvik /:bww-6h; wc9yq 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 switcj/ :h3exxmfvvhywdu15+ c )1yw +rm0w h and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2ucv ewmxy0d+fwx3/:hr mh51 jw1y )v+.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, w5;* -w)l)fakrztwsw dhat is the equivalent resistance? Assume that all wires are ideal, the batterww saf*td)-); zwr lk5y 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 showr17ft wq 0ra-necc8,g n to the right with resista rc a-,tcq w8f1e70rgnnces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 comb5 v.8dylp 8cc)jo.86c fmm4qlnr mwu8ination series and pa vyc 8.coj4nr8)u86mmlcm. f5qp8wl drallel 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 fivebfaql )*u2 : gfjsd0 ,me+pm0w identical resistors connected in a combination sm:b)2d ,0u j*mpffl wsqa0eg+eries 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 identicmxrm/.e 7nt06g si*j jal. Which bulb will be the brijn70. g*/rmjmetx 6sightest?


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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 swu7pf 7i1ox:ee itch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes.eu7:7 1px oife
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*uw8 :sgnnc e9 ideal ammeter, a switch and three resistors are connected as s 8*n ewnc9u:gshown. 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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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 t,8) q irv g:odc: m57csx8zfzthree resistors are conncoq:5z)g xm ,8srf ct 8i:dvz7ected as shown. With the 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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