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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 i.kjhrgmudvv */9 -d2 un 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 throuuk v 9/dj-g*v .mhdr2ugh 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 connected 55lvtaiar1k m0mmh,. in parallel, the_________each resistor is ,atv51.m mik5a ml0hr 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 thinec/-gi f gcdjee/2j /* filament wire of a lightbulb causes the filameg- /dc/jee/c*2ej fi gnt to become white 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 lights are being replacfw-cwv37 l0f9*ap tiyed with LEDs. LED is the acronym for which one o9fwl7a vtcf3i0yp- w*f 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 y1+uufa fv ooi- wjc14t8w3 2dhas 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 of the cy oo11d3fyi2 vuf8u+-jw acw4tlindrical 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 II has tdh7r+tlcz8yu ejg+l-+ d l/ /owice the diameter/8zu-y+e+7l /jgdo+ld l thcr 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 twice the diameter aq:9yctne m +r9 t)*kh8smv6gsnd half the leng:+*6v9 rs9m 8 gmq)stnht ykecth 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 radius rpue7nhs6/lkiy)xr2iq sa 7ip2t ,6s3. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens to thti 76 pxs,)/sey2piq27 r3 skilhan6ue 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. He decides x4n8g, s:r lm5s2 ktymto modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb produk5t y,lg 8x ss:42mrmnce 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 thei ddop131fzy +um, da7 same material. The length and radiu7,1ymd3z pud a+di 1ofs of 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 of resistance R, are conyt-60qk, mok dnected 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 of three resistors6,o yqtk0-kmd 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 cis3;7 xul.+j8m gzqgqv rcuit diagram has internal resistance 10.0 kW and the ammeter hvqs.ul q8xg+3gm ;7jzas 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 shown to the r+efcty:m (1psight. The three bulbs 1, 2, and 3 - represented as resistors in the diagram sfpm 1c+:(ey t
- 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 in al.ln6 fpjhsxjk7r1 g4doy4 ;6fy n1bxs)f2 2xh l three r2f17psrsh4y6 n24yjo1bjx xglkf)dh .nf6;x esistors 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 simple electriq7nd2rvp, y /6 *dgldgc circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bulb (or bulb6ddg 7g/vp yrq2n ,*lds)
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 statzf/p+9ds c1 zcb4ytlk 2fh4 rd/t0 er2ements is NOT true concerning the simple circuit shown where resistopl24+k 9rty1f 2ccfdzer/0 zh/ 4bt sdrs 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 series to a battery. Bulb Xt/ bi3jq s9vgmd+8 6qggmk-z-xj / ww+5mgvy + is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected in parallel w xy /gsmkqmwgtg b9mz+i /+gd -j-6j35+qwv8vith 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 wili 8s 9d8(cbkgil pass through the identified resistor in 5 seconds once the circuit isg98(8dcbik 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 resistok; +0q hknhec.rs in the following simple circuit have the same resiknkcqh e +h.;0stance, 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 circuit diagram, the current through the 6.0 Ωija(k89 ;v m2 w*b;nccb 4ymkk resistor is 1.0 A. What is the jkccw 4yk9;abb *imnk 2v8;m(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 connected in series to a battery. -evaogezz) w26p,8 vwSuppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, aneoa,86z2)zvwv pg w-e d 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 pa;m 7,hhdr)nsp tak) tk4i4mm4*m o4lvrallel to a battery. Suppose R1 hahmlpt imnm;7 4rdvsktmka),h4 44 )o*s 2V across it, R2 = 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 rated 1200 watts and 120 volts. cyi r6 .qu69pqWhat is the maximum value ri6upq 9yq.c 6of the current 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 60 watt lightbulb d1xf tph* ujxw.0b.z i/av+gn0esigned to operate at 120 x/0.0u* i.1fbpjagxvh +nztw volts?

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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 currx4 t1anq( wm/;jdel8cent flows through a 4 ohm resistor that is dissipating 36 watts of power?n ( jmaxcwdle41q;/ 8t

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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 "1yhi kujs*ihz49v.b-:20 volt, 600 watt.” In normal use, ijvhk9b yi 4z*u:s- h.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 producexfw z*bi:.7*o zlk7omd by a circuit containing o bmzflo** .wzx77:k ionly 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. Which of the following equivalhhu .jl)+4cs8 f 0hnobent resistances CANNOT be produced using all thufbh. lcnh )sj+ 48oh0ree 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 ca*aih)44:snztwh e n0pn be connected together in different configurations. If all three resistors are used in a circuit, how many different values of totale0wh*hizn:4pa) s 4n t 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 is co w8)lowgixqr o ef 7af3i0n8zst*2f/.nnected to a battery, a total power P is dissipated in the circuit. How much total power is dissipated in a circuit if n ident0nftowwx fizrlo3sa) .2 * 8eq7i/8gfical 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, h1lpsmig0vpua-5 s). caving resistance R1 and R2, are connected in parallel. pva-0)us sg1c pil5m, 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 designed such thas7fi+*e1z upqeg,u; xzt j+s+t it has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to wa7tsqu+feg*, p;xz1ue z +si+jrm 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 currt*: dm ypv)f3bem62 ahent flows through a 4 ohm resistor that is dissipating 36 watts of powef)hb6 2mp3vat* dym:er?

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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 a+f3;k ulk()pi. rc 4xrx1fanp mperes of current when connected to 120 volts. If fx;3a1r .4pnc+rpk ifk(lx)uthe 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 lightc14/kku9vp 5 lnpyph6 ;8 wgpsbulb lit continuously for 1 year pg y6 1s;/ uph45pk9 8knpcvlwat 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 li ( o /2))owc 6nc2nvbxmc4qehightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents txo(c nhe )i/4)w qo622ccmnvbhe 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 :58td0w cr c ybw)ngr+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 the maximum number of the computers can be operating at t )b5cwdrtyrg+n :0cw8he 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 conne9 bgun;cq f 9at**rn6k4rq u)ncted to four resistors to form a simple circuit as shown to thc n)a;*t6kb 9 g ru*r4nnqqfu9e 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 fs x4cs :;nn-dl30pj)d3iei kqj lu:0n orm a simple circuit as shown to the risidc0q0 kjnnpnjl e i-3; 3 :dx):u4lsght.
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 idckjsqrnh0 tq1 *a;0akpyn (2 6eal ammeter, a switch and three resistors are connected as shown. With the switch open s*jnr;h (0ca y0qnpkaq16 k2tas 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 ammeter, 0c,v+- rnvkxj a switch and three resistors are connected as shown. With the swit0-xkvj +rcv,nch 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 and p58 v,askp4ofhkx1 1 nthree resistors are connected as shown. With the switch open as shown in the diagram the ammesk 1 4fhpa 5,nkovp81xter 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 resisfhr49 (lx3gta(*y gcq7e5 k gqtance? Assume that all wires are ideal, the battery has no internal resistance, and all three resiqfga g xk4yc5q (7g(teh9 3lr*stors 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 thjmcxk6(+u.hrw2t7 ; nkj der xmy4(7we right with resis7wk uxm+( ;r 6cktmn2xyd hjr7je.4w (tances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 fold,kaqcf/oa1sr1g da ; 31d 6ive identical resistors connected in a combination series and parall qg o16 ar ,okd1d/1sfdalac3;el 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 connmw10 iw duh:dg6dy p60ected in a combination series and parallel circuit to a voltage : p dwi1y0hdmu606dgw 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 ident5 d:2z1sjjm cyical. Which bulb will bej y25dzj :cs1m 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 three resistors are conc ug5 i4boabsu.v52)3,nghmv nected as shown. With the switch open agbc5b,h)vumsg u3v 2.4on 5ias 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 thresmzvw*7r15 mae resistors are connected as shown. With the sw7 zvwm*am15 sritch 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 idek25l;ype /v.m wf0agp gvf3e)al ammeter, a switch and three resistors are connected as shown. Witvfg25m yalg. 0/wpefv3 ;)pkeh 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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