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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 h7zp + d9xcjq,x/sjjou- ,:lgelectric current exists in the metal resistor connected to the battery. Which one of the following choices best describes t:9 , lxdojcughp7, +/-zqjsjxhe 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 nuyi9 ;0jzrl mis gu1,s.ro,2 are connected in parallel, the_________each resistorr,z.i; 9i0nu1 yl2s,suorgmj is 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 f)ma tcz 4:gsxd (-v/:tl9ppcsilament wire of a lightbulb causes the filament to become white hot, while the larger wires connec mazl: v-/: 9d4ss(pxpc)tgtcted 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 wr:3z m+ pfym/ vkk5+)ccnj:ehousehold lights are being replaced with LEDs. LED is the acronym fmvkj)c:+c 3 5w/nm: eyzfpr+ kor 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 gr-cvvczrx7 +rt7z 4 8fwaphite 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 new resistivity to the old resistivity f4tw-c+r 7vrzzxv7 c8 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 tzh4xx1ng+:zug 1 6-hi ol g4yII are made of the same material. Wire II has twice the diametlh4z1xg4xz+gnuh:g16o -i t yer and twice the 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 tw wflwro70qf 7bx*rs-,i2 na)p ice the diameter and half the length of wire X. If wire X has a resistance of R then wire Y would have a resi )7ws07p* qo,r- fbr2ilw fxnastance 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 lenzp3w ncyozj1 +g/5qc0 gth 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 res / jcow+10gnqzzp35 cyistance 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,dck+9 gf jr(u to make a brighter light bulb. He decides to modify the filament. How should the filar +gd(u,f jk9cment of a lightbulb be modified in order 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 resistors are mad, j 1yrt8 0;kc8meu u,mq1egiee of the same material. The length and radius of each resistor is0gue ycuj8;8etkm ,r1,e qim 1:
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 resish t12:i*ero mdtance 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 resistor. This set of1 hi to2r*dm:e 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 circuit diagram has internal3jvfe-r)m p3kfn n1n9 resistance 10.0 kW and the ammeter has i)n3f 1pnmr n-fjev k39nternal 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 cq-86 sgkjfj) oh+iip 4ircuit shown to the right. The three bulbs 1, 2, and 3 - represented asfi s+8oj-i) h kg46pjq 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 electrh iij x+fod* ) f.itv5lw)k3.yim,xb)ical circuit at the right. If the current in all three resistors is equal, which of the following statements must be tru j )i5l*)fi .3i.o)tdkhbmyfx, +i wvxe?


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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 ef/*p( j/zqveu;z0 ws. 34* zfb2 id/wzoointelectric circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bulwzd*qujifnw0 *pz zeif3 (s t/;/oebov/ 4.2zb (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 camflp5 e x/1r t364d5.fvwecs oncerning the simple circuit shown where resistors R1,3vf5lmw cr5x/a 1t4e .6 epfsd 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 series to a battery. Bulb X is ja80 queg)/p dbrighter than bulb Y. Assume all circuit 8gqa e)uj0 p/delements 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 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 through7 j(.9sv*spxrr f ;azs the identified resistor in 5 seconds once the circuit was closer z rs7(s;. psxj9*afvd?


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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 followzx e b25bc()nping simple circuit have the same resistance, which would dissipate the greatest powebzn)(5cp 2x ebr?


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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 - 4dw.vdqkxvouag3e9m4vm8,resistor is 1.0 A. What is the power dmmg ,x 3vdo9 .4w-uv4avqek 8supply 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 connected in series to a batter0*e:zoe(i 5fccjm klq+- vg( fy. Suppose R1 carries a current of 2.0 A, R2 hcjz0og:e 5( v qekl(-m +ffci*as 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 connect i*t,uqcq n no.7 n8zx6c(ek3med in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W8qczxnuqn3c,7 .mik n6*eot( . 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 volts7osml z yde 4n1q5*;icc-zvp3. What is the maximum value of the curren-y*;ei3dcs z7 vmc51pon 4qzl t 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 resistance of a 609zj:hxwt +v x/ +xrr3g watt lightbulb designed to operate at 120 volts/3jrhx9 w xzx+vgr t:+?

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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 59/w1fdpz q ykh eh57qis dissipating 36 watts o5 5f17/hhq dwzqe 9kypf 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 wapf dno6axz;/wi42z:3g 7bny b tt.” In normal use, the current in4bnz / bwfgp6 d 32iozyxn7a;: 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 v h5zmt/y xrc(j2v,g;5 lqec, produced by a circuit containing onl(xq/y; l cvg,55hej 2 zc,rtvmy three identical 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. lycqyq014n) x1kvp 9tbxa) 5wWhich of the following equivalent resistances CANNOT be4a9 vx1 0))qklq c bp5yxwtn1y 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 cooc8u v1un:i dr 726fmknnected together in different configurations. If all three resistors are used in a circuit, how many di6un2r: io7 km8dfcv1ufferent 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 resiv *k*4(*;hdu7 pig udyhcnop3stor 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 in series using the same battery? Assume the internal3o dchpk ph * *n*(;uiu7ydvg4 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, haxfk*o.5 f .rzaving resistance R1 and R2, are connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the follx .faz*.5krfo owing 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 w6 0zxr0gwi (v takd0rcq0bpfod-0k-:hen operating qgk0-: tid0 krpf zx0a(c6drbv-0 w0oat 120 volts. What is the minimum 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 dissipating 36 wg q,9t*ir1)h dg3 vpuoatts of powov9gd,q)h31g* i purter?

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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 vol + dynm jp+g+h3l2c4nbo36 qfits. If the price of el+ nhn+oyc+lm fq2b6g 43dp3jiectricity 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 c.z(lc;d ,y9x gt m-q+r;cc8psqx* djhost to keep a 100W lightbulb lit continuously for 1 year dh txr; c.9,(pq+ *j8yl-sqzcgm ;cdxat 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 v/7d)hoc f,jm of 4.00 A through a lightbulb results in a power of 24.0 W associated with the bu,c/mh7) vfd ojlb. 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 computer22 vlpb,*durs rated at 500 watts in a 120 V circuit. If all computers are plugged into a single circuit protected b2sb plur vd,*2y 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 1xr+wa1az*bm2 u*k 8y i y5uqpfour resistors to form a simple circuit as shown to tm8 uw*+y* 1k yqi2bau15zra xphe 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 four resistors to form a simple circui7;naskkm o:x0z5ykh 1 t as shown to thkx:sa0mky7on 5 hz k1;e 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 idqex 62,:byzgpeal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the d6zp:qe xb,2yg iagram 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,y5a0uhqzxmq 35pz6t2 an ideal ammeter, a switch and three resistors are connected as shown. p2 u6xqmzh 5yatz 50q3With 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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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.23: An ideal battery+diwnzbfts+r z 5iw (,*aou8 0, an ideal ammeter, a switch and three resistors are connected as shown. With the swis*o+dt 8w( an0b+zirw5fu z,itch 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 equi+ z* qtg5prt2il 6)k*nbtix9pvalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have identical resista2p*)5iqg pk9b tt+rn6 lzit x*nce 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 ql5zx0sce pv; 90g4 1qerizu6resistance of the circuit shown to the right with resistane rsei cx 1;zg9lvz0 650uqq4pces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 combj1 e/erq4tg. .qzwr:q ination sr: z.wee tqrq 1/gqj4.eries 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 resistztb6. t852 k /8u5kdwandhkxcors connected in a combinatiob8ttk5ah .dzck un82x5 dk/6wn series 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 thee09w6 kfllo o- bulbs are identical. Which bulb will bew09 feo6kl-o l 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 ideal ammeter, a switch and th(b0ja k +-soy ,z s-q2v/tfbvxree resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes-fvx/,( sqb -syv+zjob2t ak 0.
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 th2- yicg 5mbp**dc cll y+f*4beree resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 a il- e524+bc*m yl*d*g bycpfcmperes.
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, aahw jy )zg649 8niww9nnt-wv. switch and three resistors are connected as shown. Withzv .9tiwg69wa 8nwj)-w 4 ynnh 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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