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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 metal resistocnifb7kxl vb8l u;9mx wm683 +r connected to the battery. Which one of the following choices best describes the direction of electron flow thrnm l7 lx98fc mkw;ixu3 +b8bv6ough 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 connected in parallel, thepsf t989o vz3puwr.p2_________each resistor fp.t 9w8zop9 u3svr2pis 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 l.psna ob)(:qb gqqp6pg26j8vightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb rem j o(6.q6gp:2sbb)pv8aqn qp gain 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 LEw,y hd813n va j6n*oq6sya;r jDs. LED is the acronym for which one of the follnwryqas86v ;jny ,6 3d1jah *oowing 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 cropr2 +oj3tw5 3e1s)6csfh w1xz xns*fg ss-sectional area A. It is to be placed into a circuit, but it first must be cut in half so 1+se tsw3fgx3)zx5f 61hrno* s2pwcj 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 materialef6 b(c-fi .hv. Wire II has twice the dia(f-chf i6b.ve meter 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 :,bbhn7;i fy ebut has twice the diameter and half the length of wire X. If wire X has a resis 7ef,nyi;h:bb tance 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 r. Thi+a1xwep-z n q(s piece of material is then drawn so that it is a cylinder with new length 2L. What happens to the resistance of this material because of this processz+x( -wne q1pa?

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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. qp(r8vhwz7 /l e-gnf 7ted.v9 He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the lightbulb produce more light at a given.pt - vwlgnzvqfe/9( 78dh7er 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 resistof.n eu;4jtap,e7c,fu o 4 8ylgrs are made of the same material. The length and radius of eacpau4 7 4yg,jc ,nfu8t;fl o.eeh 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 connecd7khz*eaxk8 + ted to a battery in the followiaxkk*ze8 7h d+ng 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 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 internal resistanj )j fvdvp ,g8yeldx-av-2 :0uce 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ayjpu,)lav82 : djv-xge-vdf0 mmeter 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 right. The tinyun9;vj,76fm q vu 28aa,xy hree bulbs 1, 2, and 38iam vqnuy;v79 6,2 xayn,fju - 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 electricalf0 wulz *ivblpw8 is6 91b,8uy circuit at the right. If the current in all three resistors is equal, which of the b ul8sbiw, 9f6 l8*wv p10yziufollowing 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 sn trx xz gg32iwp./5k.imple electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bulb (or bulb/.3g 2 kxi tx5grwzpn.s)
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 thzb9 eurtx6 ;jl328zmw e simple circuit shown where resistors R1, R283wze 2mlu;rx j6z 9tb 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 co+p 5 4i,rcyujsnnected 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 is obseyjp5i,s+cru 4 rved?


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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 i):xscfrc t8f, ix c8b4dentified resistor in 5 x ibc )xr t88cs,f4c:fseconds 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 thexwkx rl5*y qt-k 6x)l; samk k ryl )5xw-x6*txql;e resistance, 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 accompanyin;qv 8 e,w;) m-oxrgwr3 dloqr(g circuit diagram, the current through the 6.0 Ω resistor is 1.0 A. What is the podevx8;,gqo m;-ro)(3rwrl wq wer 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 battj6+t6d cq8. hd2lfk4z, qkbeh ery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipates 6.0 W of power. What is the voltage qh8 bhqdj4,e6+k.kcd t62flz 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 rrqe. 0ecfp :w.esistors R1, R2 andR3 are connected in parallel to a battqr0e w.ep.cf:ery. Suppose R1 has 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 isn48di4n etj*l rated 1200 watts and 120 volts. What is the maximum value of the curre8ji4nl4et n *dnt 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 6s:(+z k,) hs n9ulaydc0 watt lightbulb designed to operate at 120 volts)kznaus+ch (s d,:9ly ?

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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 current9i3 p +1+0de bn e)yv0pikthua flows through a 4 ohm resistor that is dissipating 36 watts of powp vuh)detkni3 peb9y0 i++a 10er?

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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 "1203nm47r i:i ceo,zu-j m volt, 600 watt.” In norma moei7n, : -cu4mi3zjrl 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 resistancz 1 );lpb2cbt.fvh yl3 pd/jo sfe x7w*x-,.nmes could NOT be produced by a circuit containing only three identical 6Ω rese bh2ljcf) x3x ; ,fd7y.mvp*.tb1osnp-/lwz istors?

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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.c:k6apmx9 e 3yph*p. h Which of the following equivalent resistances CANNOT be produced using all three resisto pah*xh9kc y.36mp pe:rs?

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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 togetv6 uqp+- .s c+oxswvme;nt ;ymk.1(tther in different configurations. If all three resis1ms+ (m;wtq c.;upt.kx y6tsove+-vntors are used in a circuit, 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 is w u8ax1.ye4zaconnected 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 internal resistx 48 a1ywzaeu.ance 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, a bs im2frtuw8bxy0/fx4ea(-9 re connected in parallel, the equivalent resistance of the combination is 5Ω . Which of the following statements about the resistances is cof-bwy/9axtr8 (2efm bx4s0i urrect?

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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 ofm er t/i18d/hx 12Ω when operating at 120 voltsrmt i/18d/xeh . 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 f1m6fp :v efw-y4:k l f(vbtqnbjk45(alows through a 4 ohm resistor that is dissipating 36 watl affw -5(fb(kk4:nbmj146:v qvyeptts of 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 curre52)l zv bzyljf(c: y+xnt when connected to 120 volts. If the pl5b)v:zf+jxz (ycl 2yrice 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 wdj/w5s vet6 )qould it cost to keep a 100W lightbulb lit continuously for 1 years w5jq/tdve) 6 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 4.00c0tfnc 9rf; c6tzgbc. /c t7r9cube2tz0n- 6d A through a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resi tc0grd 6.z 99z f7n cbttrceb tn/f26c-;c0custance 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 famp+7k/2-0wylcia* x mx d 3yxbdily of six owns 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 the maximum number o c b pyd32y l7w0xa/dx+x-*kmif 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 forb *fuwv 6t/l .0d0snsmm a simple circuit as shown to th db0sfn6 luvwm.s*t/0e 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 s3(hgm9 yc,vkz /uf2uzimple circuit as shown to the riv2humzc 9zykf /( g,u3ght.
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 idealj t0snt1u.tt 6 ammeter, a switch and three resistors are connected as 0t6n 1jst.tut 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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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 swvpkq)mezdodp i ( pg4w:8852(otb8g iitch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.gpe2 tkbv54gdpqio: o(( zwmd)i888 p 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 ct/)sum qvu6m -2x. jidonnected as shown. With the switch open as sh. sud26 )-mqutijmx/vown 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 resistance?ji9*w;i hta0f2+ x**lggr3q7e o tkc* mn eul+ Assume that all wires are ideal, the battery has no internal resistance, and alci;fneg0x + k m la*u*te*rgwlh2i*3 t9+7 qjol 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 t+.0uajj b ,:n t0sg,baats a9yhe circuit shown to the right with resistances+ ys,t0t 0sj,j:a.bbaaa n9ug $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 idenq8ib)+mg g ). bax2pnxtical resistors connected in a combination series and parallep8x +g gn2) qab.xbmi)l 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 connected in a combinatic x2v j5w 8e 94(dsn(yyh/ipxton serithdj8w(xcs /y9e x4ni2vy 5 p(es 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, avz(jy38egy ;m ll of the bulbs are identical. Which bulb(zyjg;v3 ey8m will be 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 anr) hg4y )ya x+jplde yfs7kg 744sq)5id three resistors are connected as shown. With the switch open as shown in the diagram the ammqgs)y dh5 y77r44 klagi+4fxy s ))ejpeter 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 ammeh )uh,8e)nbruter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeteu8 )h,r)hb nuer 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 batt elna. 9;be-(oo if:xkery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.n9o : baf- xe.;okl(ei0 amperes.
When the switch is closed, what would be the current in the circuit?


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