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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 mw7) o;hx,gzjmetal resistor connected to the battery. Which one of the following choices best describes the directio gwjhzx),om7 ;n 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 are connectedpal w3(9 vny-j in parallel, the_________each resistor is nj lw9-3v(apy 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 lxk9( vw*l3n akightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain v( x*k9na l3wkmuch 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. LEyjopa64 wpfiz k;:k 5fjj :2r:D is the acronym for which o2; ojjiwpyrfzp6 :::fjk4 k5ane 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 res5*cbhz kpsy; +istor has length L and cross-sectional area A. It is to be placed into a circuit, but it first must*bpkzy+5;hs c 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 o jy07nx8zfrl0/ fx t-9mi,awc f the same material. Wire II has twice the diameter and twice the lengnf89 -mlc x0j/7zyx wt0a,rifth of 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 but has twice the diameter and haldhf5 i aw:e+/yf the lenew5/ dhay: fi+gth 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 L and radiuc43) ckl .c c1t*gwsm *bsgp4us 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 ma)wbg k41 pcc*m43c g.c uls*stterial 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 5vlb 2- perh.cbrighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbreh-bc 52p .vlulb 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(dq+r sr+ eix3m6d+ 6y6brccf made of the same material. The length and radius 6exq 66rrc(y+ fs+d 3rcb+dimof 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;g ly2jf1v93m zxopb 2 of resistance R, are connected to a battery in the following way: “Two resistors are connected in series. This combination of two resistors is connected in parallel to a third resistof2x l m1jgv32bpo y;9zr. 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 cxdfg;ny rs zo v97hf/unqb8.j--7k 9nircuit diagram has internal resistance 10.0 kW anq/ bof x;rnzgks9. -j78f7hydn-v n9ud the ammeter has internal resistance 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 4727bhn.qv0 evnc m gnshown to the right. The three bulbs 1, 2, and 3 .qn02c n7hemnb 47v vg- 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 9k s.;cjqm:b0xs 0lupthe current in all three resistors is qx:ms ;b90jc 0kuspl.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 represel7of0 0yw m5nnnts a simple electric circuit composed of 5 identical light bulbs an5wm007nyl fond 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 th1)j; eoujbst,*1b oocwtts42e simple circuit shown where resistors R1, R2 and R3 are have*)bosutwtb 1j 124 c;o sejto, 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 series ex tngz7mp:nb1s0*p) /n m5dhto a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are zmnepbg01nhd*: pxs)/ 7 m5tn connected 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;6u5nny7t g ;dqp ca9b pass through the identified resistor in 5 seconds once the circuit6bt;y uc d5 anp9;7ngq 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 follrab94 d+b z zwc0p;tu1owing simple circuit have the same resistance, which woulwc1u p9;4zbatdrz0 b +d 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 circuit diagram, the current through t+v5 b)-:sbrfkuwsb 9xhe 6.0 Ω resistor is 1.0 A. What is the power supply voltag-b uks5bwf)r b: 9sxv+e 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 in series to a battery. Supp7-*9 wq(aefy iiwz4kk ose R1 carries a current of(zq eiak4 yki-7*ww9 f 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 resm t*fs ktx :;i( bfs/d/n7xrs.gh/8hjistors 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 curbm7frxt*.h/ j:nk8sihf(;xs/ d/gtsrent 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 is the me0z; u2 xd yhj2nch /43udwt1kaximum value of the currt;ewu4kj3d 20h2x /uyzch 1ndent 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 resistan,+wog 3qoib;un k)9 qzce of a 60 watt lightbulb designed to operate at 120 v;3 qo) kqzbugi+,nwo9olts?

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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 ohyu1e+e p)rqroo py-3 9m resistor that is dissipating 36 wa opeq+pye r3-y r9uo1)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 clothes is marked "120 volt, 600 6 g:,+ivl 0d4eun yqz k7anno.watt.” In normal 7l nk0agy o ze.q+:nu64dn,vi use, 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 uw0 aewmoa7,o3glj35ircuit containing only three iden0j7ml e3w u3o5aow,gatical 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.vb0z z/8 flx/f Which of the following equivalent resistances lvfzb//0z8x f 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 in diffewr,xun h at 10x:6k73iuej1zo rent configurations. If all three resistors are used in a circuit, how many different values of total resistance can be produckw:0ut6zxuxo1r17aj n, h 3eied?

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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 resistorew/(lg n9qo uj9w 5b.f 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 identical resistors are connected inwo.q9jwf/l(n 5 9ugbe 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 resisl+8zi3os8tlk tors, having resistance R1 and R2, are connected in parallel,ok38s+ ll 8zit the equivalent resistance 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 designed2 el 8f5,yikip:xys ,8jrgxh: such that it has a resistance of 12Ω when operating at 120 volts. What is the minigr ksxj,py 2eh 5,if:ix:8y8lmum 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 is d9q pu)r:h+l lye.zp/y issipating 36 watts ) hy/ 9 z.lp+pu:qylerof 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 c*cm fq laqny01r,)07 omy o,ee aqz3+amperes of current when connected to 120 voltse m e)c*,yz ,0lcoqaq7fry0qnm o31a+. If the 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 it cost to keep a 100W lightbulb db ;muf00 +2digz(g(ia0slpllit continuously for 1 year atigg(l z ;02(0udsdl pf+amb i0 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 i j:yd;rdna 0av;dof.8n a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance od;d;aonr8yjv:fa. 0 d f 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.k6wl;0 *hcdl(k )dffdoob .s of six owns a computer rated at 500 watts in a 120 V circuit. If all computers ar0);(bfoddfo*6.lshdk k.l cw e 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 connected to four resistors to form a simple circ 7yc dllw)((vcuit as shown to the righ(7 ) lcvcw(dlyt.
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 resi,i8s3iq:nk7c0l 5sd 7 iswxawstors to form a simple circuit as shown tonic3sxw 7i5ws 7,q is k08a:ld 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, anpn*b*rr8n xwbhr .+ b5 ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the amxpbn*8b h+ .* br5rwnrmeter 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 ammeter, a switch aat7g, e* (, 8grp ftfvebzq1/lopb4q7nd three resistors are connected as shown. With thvtr/,b*gp(4zlt 1 q,8go p fe7fq7a ebe 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 an2denjb5zpoex n ccs 6( y3:o7.d three resistors are connected as shown. With the switch open as shown in the diagram.o2sxo: d e7b(e6n cc5 pjzny3 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 e,uo(2of yf sjv*c (ip7quivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three resistoropc(7i fo *yfu2j, s(vs 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 f g 7 xoka(,4w;hjo2pq ,tq1ab0ph7ihthe circuit shown to the right with resistanc7k(h iq 7w g41t fppax;,oqhobj 20,haes $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 bc n;nn+efa3;s0n okvazt/j;4elow shows five identical resistors connected in a combination se 4az3tves; fo cn/ k;a;0j+nnnries and 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 belo c/0+d0nwm(- jyg( fano9i hllw shows five identical resistors connected in a combination series and parallel circuit to alnw/ c m-hgif+ n9a(oy dl(j00 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 ide) , j,:ep7p/pami zlmjntical. Which bulb will be p z/j 7, m:pli,am)epjthe 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 switch and three resisbf 1i 3bk.0-b kj/nh;.o xwdx5gfzwe,tors are connected as.bd j- f5nib1 o/wh.gfw 0,3xebzxkk; 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, an ideal ammeter, a switch and three resis x wdv9-6ur8pftors are connected as shown. 6vrud-xwfp89With 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, ae p:s.,6v- ky)b bntbybnc8 1uuc41mbn ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in tuvcny-sb 1pbc1n68b.e kbyb,)4m:ut he diagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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