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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 elsuys:8vq g6mf ,+fc, cectric 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 direction of the electric field through the interior of the resistor?+v 8f:qfm uy6,c,sgs c


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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 resistos, xiky h:2obdaw 83a)rs are connected in parallel, the_________each resistor is the s:y32)aibawx 8,hso dkame.

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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 fik7lp),l /kxr dlament wire of a lightbulb causes the filament to become whi xp7 r)ll/dk,kte hot, while the larger wires connected 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 lightsf- vyxh140qgk25fx -sh; 6nifcg wac/ are being replaced with LEDs. LED is the acronym foxhg;2vg s-w6x a 1cf5i 0-/4yhcffqnkr 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 resistor has length L and cross-sect kz/bw5 e*yf9zyb2zdi43.md jional area A. It is to be placed intz 29dim/y wkbd5b.e *zfz34jyo 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 Ivz/ha342b kd.e2 smk uI has twice the diameter and twice tdbze v ua2k .k/s243mhhe length 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 diameasnkixo:9- * cter and half the length of wire X. If wire X has a resistance of R then wire Y would havex9s:*oki- can 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 lengtgf,v /( mlme5gh 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 thisev g /,gl(mf5m 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 brightee9, b bwltdys.s6h-q:; . bhztr light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbul:-t6.;slbd9eys b hq,h. tzbwb 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 mat wiy y/njkj5z a( pvd-6p pm9oyx6*0)qerial. The length and radius of each resistor ip6/5(ij6mpv xnkpo djzyy9)wy*q- 0as:
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 rsar.44dt 54 qm-s34mkamst sbesistance R, are connected to a battery in the following way: “Two resistors are connected in series. This combination of two resistors is connest.3m44 k44 mrasmssq-dtb 5 acted 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 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 ciab,:*ln-hza (x 3yvsvrcuit diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. Tza: ,nya*vv-bx3( lshhe 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 +yv.usoyjhmt 0tl+ k8hpt r *c+5w v*.shown to the right. The three bulbs 1, 2, and 3 - represented as resistors in the diak+t hv.+p lvw+y* t*cht muy58s0j .rogram
- 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 sk;h .ij/*;m9cz airqin all three resistors is equal,q9acmizjr/h;i s;*. k 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 simple electric circuit composede;3nox hv vt3k0): 2durs,wjd of 5 identical light bulbs and 2 flashli ndv )s2e3tw 3,uoxv;:jk0dh rght 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 the sie9 +;kl 6gzc:inca9 xpmple circuit shown where resistors R1, R2 and R3 are have equzc+9p lc k:;egixn 96aal 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 connea/g; fbnxf k rn,e21w.cted 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 x;w, /f1kganef n2r.bis 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 w :8ms2zcn5mee7onj, through the identified resistor in 5 sec 8cm7z w: jm2n5,oseenonds 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 resistors in the following simple circuit have +lbw:3)f v y gfgsc+,xthe same resistance, which would dissipate the greatest )cvgwlfbfs:y,+x g + 3power?


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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 throug;bp:y *-+ ziq)pz g kpw:hmic6h the 6.0 Ω resistor is 1.0 A. What is the power supply voltage iwz; :gp -b)6c+y*: zqhpk mpiV?


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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 R1wzy ,yh0h1)ske ;htr5, R2, and R3 are connected in series to a battery. Suppose R1 carries a current of 2.0 kwy)ehh s ,5yhr 0z;1tA, 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 R1, R2 andR3 are connected in paralleqdwxav / 45d5kl to a battery. Suppose R1 has 2V across it, R2 = qx/w 5dkd4va54Ω, 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 rtu4 p+h7td,fe4ml y suf .4:xqated 1200 watts and 120 volts. What is the maximum value of the current4f: 4uu ty4+dlf hpxem .,7qts 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 reia: qv,c/ee6jsistance of a 60 watt lightbulb designed to operate at 120 volea e6/i,qcj v:ts?

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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 throhpp o(lyzg. 34ugh a 4 ohm resistor that is dissipating 36 watts 4gpl. oy( 3pzhof 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 watt.”wzs qn+gjq 7-; In norzqng+-s wjq ;7mal 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 r ,li18omsgr1 yesistances could NOT be produced by a circuit containing only three identical 6Ω resisto1sm o1lri8,ygrs?

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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. Whicummwy f gzuv)x*0zf +9yny6xsl;i6jm42 )+d gh of the following equivalent resistances CANNOT be producef)m+4x;6j9fl inusywgydzx*ug6 +vz0 )mm2yd 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 caqa m(yl j6 3n6 63xicmgk9ldl5n be connected together in different configurations. If all three resistors are used in a circuigkl6l6 l jm3 m5n3xi 6y9d(qact, 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 isdgyk:nf :i.dvxs-o/ ) connected to a battery, a total power P is dissipated in thed/go :fdys.:xkn i )v- circuit. How much total power is dissipated 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 and R2, areu:fs* ddya5r 8)ob89lws h2t y connected in parallel, the equivalent) 9ab dr2w8oyhs*tyl s 85udf: 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 designed such that it has a resistatwja;b /z.h o,nce of 12Ω when operating at 120 volts. What is the minimum amount of time that ,tw/bj o.hz;a 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 flowsfpbu8 4xc60j7x w -jt,e7m mnq through a 4 ohm resistor that is dissipating 36 watts of pow76 78nbutjc4emm- px,xwjqf 0er?

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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 120 voldo ke3jdk;nkq +c/9p2k3 c+zsts. If the price of electricity is dn3ep +czq/ d3sc2 ;9okkkkj+$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 aztk*.- bcqqy sa+dhf4 1:d6h lit continuously for 1 year at a r qhsqd:da 4*fbc ha+k-.6z1y tate 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 ws6kf30vtov ij- s82n in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resistance of the lj fotwis680vn23-s vk ightbulb?

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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 2.cz*gmd lw k+500 watts in a 120 V circuit. If all compu +*mw.gzc2lkd ters 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 cotqulrp k.56wpa+jjf.6- o oj* nnected to four resistors to form a simple circuit as shown to the ro+oq lkr.5tup jpfj-6a j*6.wight.
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 resistors to form a simple circut8t pc3t(azh+xhs lk+uo3j 4.it as shown to thezsx4c+j+3lth oh8pk (. tuat3 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 three resistors are c0oegrekyf6u 05 ;p5cjonnected as shoef60k;u 50rgy5 ejpco wn. 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 id)bm0(x bq 5nyzeal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reamqyb 0b) 5(xznds 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 resistors are conox9 8z+zmok0e f3r. tknected as shown. With 3. +zfoe80z9o xrkm tkthe 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 shown to the right, what is the equivalent resistavy c8+bclx1gw1 ,z/rlnce? Assume that all wires are ideal, the battery has nox, ygw/z bc81l1cvr+l 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 shown to tv 80ykp,+by:qmmvjj e7 hz .) the right with resistance tm b.,8ykpvqz jye0):h+vjm7s $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 conn0:kcea ff/u5b ected in a combination seriebekf:5facu0 / s 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 below shows five identical resistors co bj-vs0-9z+nprburf exeh )0n)v02 zznnected in a combination series and parallel circuitu+2zs0bfvbpr 0 n ej)nvxe-h)- r9z0z 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 fj4f+9 fficp 1identical. Which bulb will be th+fpjf cf149if e 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 ammexb:ou(nz .7w gter, a switch and three resistors are connected as shown.no (uzg7. :xwb 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 amme g rdj6k-+7rf *3p thy8ohid8wter, a switch and three resistors are connected as shown. With the switdhk-rih+*3woprytj8g78 df6ch 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 p*.z :/ghb oxuresistors are connected as shown. With the switch open as shown i obuxp .*g:/hzn 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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