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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 current fmfei)f,sj :kj fl+.4exists in the metal resistor connected to the battery. Which one of the following choices best describes thekj 4: fsf,+ef)lijfm. 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 resistorh 8rrte8u h3a2 buem*)s are connected in parallel, the_________each resistor is thmhrh8re3ue)28ba u*te 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 s8ymjlzs89z.e) w nw 8the thin filament wire of a lightbulb causes the filament to become white hot, while the larger wires connnez9)wj8.my8lw zs8sected 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. ta ..7jcht3sr LED is the acronym for which one of the following choices7 .thr.ac3tjs?

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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 graphiteif ;krz (0:r cje4v0ub resistor has length 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 length is 1/2 L. What is the ratio of the newk:jr 4 uc;fi bzve(00r 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 xa. ctnf;tcc1xbg0ke;7,r ( q g wm/j(made of the same material. Wire II has twice the diameter and twice the length of I. If I has resi tgnf7 (acj ;,b;(txqge. 1wrx0kc c/mstance 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 bui/d90 ff f6srft has twice the diameter and half the lengt/f9d 0f 6fsfrih 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 Lrl mees+lcs a -3b:);k and radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. Whatsl+ carlkbse: m;3e) - 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 brighter light bulb. H7.lnno6 ijo;7u zrs3qhg+ h7 oe decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb produce more ligh6h7ooglnojr 73zq n s7.+i;uht 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. The lewg ho,:iv*o,g0r2 u6 tr q(xolngth and radius of each resistor grogh,ow (6,tu*xv 0i2qrl:ois:
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 tdhda ev2.o 7x8 y8:icm vr90gbattery 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 equiva v 8evr.x92:hg c0amd7yotd8 ilent 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 circuitx6n;s9bi s8cvz)i,k f diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmete; ,f9 ns zxcvii6bk)8sr 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 j i,ivzfl+j sz1)i,wxm65ow 1 shown to the right. The three bulbs 1, 2, and 3 - represented as resistorszo1iz1i6+ s5 xjmwvw,, lijf) 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 electricalgpa8)eo 6v 2,nc.frqwg71 ubz circuit at the right. If the current in all three resistors is equal, which of cav ufgwor16 ze8qp7.n,gb)2 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 repr2oed4 kvwaqo0 +0e;rpesents a simple electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bueok02oea r vqwdp40;+ lb (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 wj lhiapn.mrj/78 k,5true concerning the simple circui wk/ plir85h.nma,7jjt shown 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 s*vwwe dn3;m1j* fzd6keries 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 en3z 6v1*dwdm*;jfw kother 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 identha f;4v4cc7tk : e;zzqified resistor in 5 4;a :he4qzcf;zt v7kc seconds 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 re (n ul, e3,1lw3pf+qo32c xm u7,f/rxolyujfzsistors in the following simple circuit have the same resistance, which would dissipate the greatest power?j u o,p 3yz1m,rwoulu2x, f3 lc/l3(q7fxf+ne


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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 throuq mhl 1k3 -gy/vuzg5b)iax3rgfa5/v.gh the 6.0 Ω resibk5u lvyza3m5g/.f/)v-riagqhg13 xstor is 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, 2tq7ar; 2gjl qnq74 hgR2, and R3 are connected in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipq;7 a74r thqngjg2q2 lates 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 connected in paralbn4jhcq -dz-,, yx/y.(txu( wjc l;kclel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. dc(;chyqz u(. c-,4njytxkw x,-/jl bWhat 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. Wh4(w n xf55k5rpkv8b gfat is the maximum value of the current under these conditions54vf rpxkg5 ( n58bfwk?

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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 de+hh(fp5+fbg0wf:c a dsigned to operate at 120 vw0 g5(apd fhhf:c +fb+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 a 4 ohm resistor that/4grm.qi g e cr,.:xdjw3kxa/ is dissipating 36 wa g i:/,axxjrrke4m.w3qc /.dg tts 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 press l 7zm7dk5 3in edro*3wclothes is marked "120 volt, 600 watt.” In normal use, the cu*r77kenz 3 odidm 3l5wrrent 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 cibr0h9k mq 973s8jucfqrcuit containing only three identical 6Ω rrf 3ushk0j798q9m qbc esistors?

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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 folbr55oj7v .p apb4ctt5bsw0-, 2ascejlowing equivalent resistances CANNOT be pjsc .c5rs5 tabpj7e-vbt4 ao 5bp2, 0wroduced 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 o3xg6;rcczopvdjn (a1 q 9p90+df0z w jf different values can be connected together in different configurations. If all three resistors are used in a circuit, how many different values of total resistance can be produc9 0 0ag3n zx op6 jddzvj1;crf9p+(cwqed?

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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 a5*onmwjjknm )u3dl vi 9 h,,9 iob9c)l 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 series using5mlj u o*wkoi,)99ldnnm )j h9ib3 vc, 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 in 6d*-7u wyg2w pf-/um(m eypbw parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about the resistances iwbeuyfd w7/( m2wp6-mpgu* y-s 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 designb-qbex*i2bpazku:mq, h.9n 58m u: gt,iwkn0 ed such that it has a resistance of 12Ω when operating at 120 volts. What is the minimum amountp5 : xntn-,,gqk miauq2b hzbw 0u*kb8me9.:i 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 througl. h/ia 3 nee0xw/dq*u t(gq6gh a 4 ohm resistor that is dissipating 36 watts of0lte/eg /6*.iqgn(uh xdaqw3 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 connec00ja 19pitq q -d s*hwr-fkr+kted to 120 volts. If the pr j1+iwk a--kh09t q0dqsrfrp*ice 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 it cost to keep a 10fz)az+ sf9jb(8h .oup0W lightbulb lit continuously for 1 yea+fozj)a9(b8phs. zuf r 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 ev;j2u5:.x trdg0j rr in a power of 24.0 W associated with the bulb. Which one :vt5xrre jd0;2gurj . 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 owe48zww p dj clp(ki66( z-u2azns 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 8l pz- p2a(e z6z (w4wjcidku6the 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 connsv 7a49zjspm i-)9bxfected to four resistors to form a simple circuit as shown js7i9fb -9 x)mavz4ps 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 g 82onwb azcby5dz4/ 4to four resistors to form a simple circuit as shown to the right. ydb 2 zg4/58waz bco4n
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, ez*kuov71;wgfx*a 0 d an ideal ammeter, a switch and three resistors are connected as sh*1 de fk07ugxvaow *;zown. 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 aylc 7ttcn y;+/mmeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagr+l; y tct/7cnyam 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 batterljk f55m)ir,3jj)dc yk ;ano .y, an ideal ammeter, a switch and three resistors are connected as shown. Withky3f5, j. ); jmc)dinjal ork5 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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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.14: For the circuit 0ae7m+nqys(oshown to the right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resynqo7+ eam0s(istance, 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 to the x84:-pvh, scim; vxnnright with resvi;p-nh: , v48nxxcmsistances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 conag5 cla o .xc+6h*kcok/vb0 7ivqw ab*f.0:aonected in a combination series and parallel 0ock7 vb oha+lxvc0w:a*.b.*ca65f gi aoq k/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 ide2td -* cwg0co4c byv/intical resistors connected in a combination series and parallel c 4gcc*woit/dy2 b 0v-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 circds)dbcc4/ urx 64l 5amuit diagram, all of the bulbs are identical. Which bulb will be the brighte5d l c4m4)cb/ u6xrasdst?


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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 switc x avei:p.y+s1o 0x3oxh and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampy3x+ eopva x: o.0s1ixeres.
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 x n,z3 tp+wb9land three resistors are connected as sz,wx3+ pl9tb nhown. 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 three resi (:e7 h;sew( iwz.pgyqstors are connected as shown. With the switch open as shown in th qez .;:we(y hispwg(7e diagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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