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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 mett bm85tp a8exn40r+gs9ukwc 4al resistor connected to the battery. Which4wp94bsg c 5urkta 0+mnxte88 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?


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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, the___bu9np3of ue-/x2z,pp7 xj(p l ______each resistor is the f,ub xo3(p2pzu7lp e9njp x/-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 lightbulb causp-q) z wi1vtz)1s52q nef/wfws -qa r9es the filament to 9zwq5)fvs- fi)q1s 1z-awrewpt2n /q 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 re 5x-rcl9 :t.ycx:z fkvplaced with LEDs. LED is the acronym xr: c .v ltkf-:9y5zcxfor 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 c+:m6lniof;ws1mezk(suqo 47ross-sectional area A. It is to be placed into a circuit, but it first must be cut in half so+ mz ow4feu;7mi1s(skn6o: l q 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 mater rj/1o lum7p22q88z3rnz pvnfial. Wire II has twice the diameter and twice the length of I. If I has resistance 3rlzq28p 12fn8r mo7upv zj n/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 half nrc:rf*l;g0 e1o1ax rg qjpqzw+**d:the length of wire X. If wire X has a resistance of R then wire Y would have a resistance o:cr;p**rqfrez*q: 0nwg+1 g1 xljda 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 rekda;so +:i3hz*o 8f,ao jpu-adius r. This piece of material is then drawn so tj*+ uiokhaoa ,od-:83ezs pf; hat it is a cylinder with new length 2L. What happens to the 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 5z xls py;8s5 7fdcqk.make a brighter light bulb. 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 giv.fzxs5c ;ypdl8 5qk7sen 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 thetq32t u.clq* e same material. The length and radius of each rtq*.q3e t2luc esistor 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,mf6po) a3 lme+ each 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 resistor. This set of three resis6+om3lae f) mptors 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 resi 5*ze-sn( z12v oytiiystance 10.0 kW and the ammeter hasy-(t*5yne 21z zviosi 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 right. The three bulbs 1, 2jt wjq1 g3san-14,obv, and 3 - represented as resistortwjan1 ,jgv-sb3 q4 o1s 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 electricxr:lh c7j: lc u27nas-al circuit at the right. If the current in all three resistors is equal, which of the following statemr:l:s7hlxn-7cc aj2uents 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 sima35n ov*cmr.d g8z7 fiple electric circuit composed of 5 identical light bulbsd*z5mc3gniar.8 v 7 fo and 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 statementsmga0ev78l -:un)zd j:i qu,lu is NOT true concerning the simple circuit shown where resistors R1, R2 and 0uiz v8ul:gqdum: njel7)a ,-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 ag3s- ,8iq ff- mjgtmo3 battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected o-g iq8-fmsm3tf, j 3gin 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 wixt- 6:unbww7s gh- wlq.jy5s36em/fell pass through the identified resistor in 5 seconds lmbw6wx7-s f . gese h6u3wynq :j5t/- 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 ;tfd4 qy 7luc6 the following simple circuit have the same resistance, which would dissipate the greatest pu lyftq4d;67c ower?


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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 awye(d7z(h) k diagram, the current through the 6.0 Ω resistor is 1.0 A. What is the( (hze ak7w)dy 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 bdr iyw5t ue,63c hei*9attery. Suppose R1 carries a ce 5 dt,9*ci3rhyiw6euurrent of 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 resistors R1, R2 andR3 are connecteu2k8 p)mww+tahm9z;e d in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W.8 mmhk+ae)wp;zu29w t 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 isr 93njd,t4vigh,le *h rated 1200 watts and 120 volts. What is the maximum value of the current under these conditionidvl th jr,*4ng 3he,9s?

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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 ;uhmb -0d-qi wwatt lightbulb designed to operate at 120 volw uqd -mib0-;hts?

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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 reskxq3 w) if37rqwpzbl) a b8):8ag 2uvpistor that is dissipating 36 watts of bx:)3 zr27 u8l 8qba3w)qki)vagpwpfpower?

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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, 6007 deh b,t3p)edgqt(o9 watt.” In normal use, the cug 9dhq (te,boe)3t7 dprrent 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 cz2ee82)d d pj7z es y9df1q;8;zcqmh s0u-qxfould NOT be produced by a circuit containing only threhde2fzej) qs8 qmqedd-s;12 u07c z8y9;fpz xe 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 reai6,mi1lir7/ mqstl30a7 ux fsistors. Which of the following equivalent resistances CANNOT be produced us3aml16q/07rai7 l ,im txsu ifing 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 v6xpr(s+xnu(3iwhwf - pt6 ( mvalues can be connected together in different configurations. If all three resistors are used in a circuit, how many different values o u (3pwvif 6n6mtr( +(hx-wxspf 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 connected tjy9wbk3.+ m hgo 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?m9w3 b.g hkj+y 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, are connected in paralkuqn6kf6/;u(s9c hddga xd2*lel, the equivalent resistance of the combination is 5Ω . Which of t/kd; xs nuf(9 62hd6dqckga*uhe 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 resistance of 12Ω when+k5wifnccz4 , h7l70qrv wx3p operating at 120 volts. What is the minimum amount of time that it would i+4z7l0n7c rfvw 5hcqkpwx ,3take 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 w8gtkn o9) 0digatts ik ntgdog 089)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 current when con. m-k 1o2ajrgtnected to 120 volts. If the price of em.a-j2tr1 gk olectricity 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 lighrh09lp6vv 1/y os5ihsb1ro mm 0/+rewtbulb lit continuously for 1 year at a rate o6rvss/yovhwlop+b e 1rm 519/r0h mi0f $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 4.0d9 f)*ke+, mgki/n gr3gxsw*zb5ip h 90 A through a lightbulb results in a power of 24.0 W associate *g*3/r e m+ h5sdx9g)wz9ikipb, nkfgd with the bulb. 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 familyi(bcuj a3l+c44v( g 8eafaah, 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 of the computerac vgae(,3 u8jca +4fbh ail(4s 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 fo py89.gbe6wan rm a simple circuit as shown to the right. y a8 wn9.pge6b
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 resisnil 6a1rg8ggu / dm1:rtors to form a simple circuit as shown to theni :dma6lg g/r1 8gr1u 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 areyn/ rn pet4z69 connected as shown. With the switch open as shown in the diagram the ammeter 69 / nzter4pnyreads 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 ammet7mkvcmegi4 zh98:h4j er, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter rz9ihm7ekm v gc:48h4jeads 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 sw85dj yuj.,6jrd m6v mjitch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0dj mumjjdy5.8jrv6 ,6 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 st5 5o 8z+u htrruku*+is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three resis8t+our u5*utskzh+ 5 rtors 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 m7p4jpc nnn 9:shown to the right with resistancescp nnm4p9j:7n $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 combinuro 2inp( z jw:g 4nrn3nn5h3(ation series and parar3guoni3(2 (zhp : rnw4j n5nnllel 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 ;w v hjbh3acno9x,7:fa combination seriesa: 7j;9w3 chxh fvb,no 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 the bulbs are identical. Which zdrgrz;-t 12wbulb wiz;r12dt g zw-rll 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 and three resistors are con)s9 g xc;kr1ivtn - 6-xc70/dkf fkiconected as shown. With the switch open as shown in the diax/i f)k ic960f n-rd 1 sxtcgk7-ok;cvgram 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 resistors as 1/x: t:efgh7 m7avm3d9vjvm pw- (bdre connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes.:bwa3gdh( :vj7d-fx7tvpmmvs e/m91
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 idea yd-3 wdcs00dx9n5 (n;xa/epc.elk lol ammeter, a switch and three resistors are connected as sh;09wlp3d0c. d cnx5ed sxey(/lnk oa- own. With 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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