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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 lm 4:, yjfn(1fach2tqmetal resistor connected to the battery. Which one of the following choices best describes the direction of electron flow through the resistor a( ,4mhfy:2ntqcal f1 jnd 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 co2z*.j r8k:ixals v cp*nnected in parallel, the_________each resistor is l2 rspa :kv8*zjix.c*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 throughmb2-xd n nrtx k64a01m the thin filament wire of a lightbulb causes the filament to become white hot, while the largm4nrk2a-dt0x1bn 6 xmer 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 replaced with LEDs. LED is thjpi-n9m r2dj2f + blo6gpw(t m0-)fkp e a9p- d(m2g)r2woijkpp6 ftl-m fbj+n 0cronym for 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 l4s(qrs z 8nl 3zy;:np x,u,mkgength 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 res 8yzu,; mz x(4s:pr3gs lqkn,nistivity 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 then g9uh6/9.bd bhi ;scap1vwd. same material. Wire II has twice the diameter and twice the length of I. If I has resistance R, II has resistanc./9dw hvpi chgs.6 a1dbb;nu9e

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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 mf.tfnc2s5 3))h y+0rybu vqjhalf the length of wire X. If wire X has a resistance of R then wirecrhtfjq)20sy.3 5f+yubn v)m 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 resistz/e2h h mahu* u:q++sdor has length 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 this material because of this pr:++dsae q*hzum hu2/hocess?

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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 ligh pilh6u/hac../.7ydc v86 vgh dj)jp+zs acu+t bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make u+/ hiv ajvu.j7adl./dh yh+sc pp.68c6c)gz 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 made of the s3gj)oaf z 8f s7n;uv pnnb42-jame material. The length and radius of each resistor ipvb 3o2fzns8 ugnajj-n 4 );f7s:
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 cont9savj ,m4 8s3rnqtp8nected to a battery in the following waysvsttq384,89r pn mja: “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 res a omlywln** .tq832nhhmm )k*istance 10.0 kW and the ammetm 3.mtlhn * 2 hmy*klqn*w)o8aer has 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 shaofk+ l *pfph4d4e b( cs651vlown to the right. The three bulbs 1, 2, and 3 - represented as resistors in thb5cv*fkoes4l (4p h1afd l 6+pe 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 electrical circuit at the rig*w kyoot9 ),vb qkjh6 lyx))i8ht. If the current in all three resistors is equal, whick,*o6) )lbi v owjyt x9)h8yqkh 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 composed oq: aru0bg7 m lbe*3v3df 5 identical light bulbs and 2 flashligh 3 r*ue ab0bg7:3lqvmdt 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 is6 g3fkd+ku yd. NOT true concerning the simple circuit shown where r+ d ufyd.6gkk3esistors 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. Bul083tas p / uuo;khq0xyb X is brighter than bulb Y. Ass3o 8k0/;p ay0uxushqtume 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 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 through u o(suytr(*em: 1(n dn the identified resistor in 5 seconds mnuns1y( rd*u e:(o (t 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 resistortx) qi,e(cfg /s in the following simple circuit have the same resistance, whicheg q ixf/t()c, 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 cuhc a(1l+t6xtt rrent through the 6.0 Ω resistor is 1.0 A. What is the power supply v ttalx6c(+t 1holtage 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 ser( v z+c6dxjmw(t, wyh7ies to a battery. Suppose R1 carries a current of 2.0 A, R2 haszwj(,7w m+ydh tv 6(cx 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*zps(fw*fe s 5 0j2xwu resistors R1, R2 andR3 are connected in parallel to a battery. e5*xz(sju ww 0pf2fs*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 is rated 1200 watts and 120 volts. What is tz33 ujg)ieuq; 6/f zawhe maximum value of the current under azzg)e ;uju36 w3/q ifthese 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 designed to operate)a-xas0 kae1e at 120 volke e1)a0s a-axts?

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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 is dissip0,csv*szidudekt0+ , ating 36 wattsz+ k, dsec0 vu0st,*id of 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, 67d2b t vk- ke-dtz y39ayr5 tydo(26iy00 watt.” In normal idy3vte72 6y9o(ak -b tdrdyt2yz -k 5use, 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 resist mil4/1p(jwquances could NOT be produced by a circuit contm/ 4j1q( lpuwiaining only 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 th0b7zlk5po pf5a w9dn1e following equivalent resistances CANNOT be pr 5dl zn751a9opb wfp0koduced 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 connected together in diffewq1)t0d4 s-fbtg9ibca(z :ubrent confibudw9b:(-a0t z bi cq )4gf1tsgurations. If all three resistors 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 connected tost0c7md8w)m r 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 t r08mmc7sdw)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 connected6sapi75 v,xo uy4-f )kfw+dm f in parallel, the equivalent resistance of the combination is 5Ω . Which of the follow7u,6is ypx4+ ofd -v )kfwamf5ing 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 hasx my k.:z 3wkp,2xe5a3nejc k* a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take ej .32:5 k3*pmz ,eknxkwxcya 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 thr cpy trxs+h a5(9cv0+bough a 4 ohm resistor that is dissipating 36 watts ofh 9ctpva 0cx(+5y sr+b 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 connec 17 tmi9mr7mvsted to 120 volts. If the price of electricity is m m71m sv7rt9i$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 lit cont g8gd rwenc9b(pm 94h7inuou g(eg h4d8cnpw79r bm9sly for 1 year 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 4.00 A through a lightbulb results in a pmg5 n,0 ; p6jbp3)nwpopbx* ixower of 24.0 W associated with the bulb. Which one of the following choices best reprex; *pij)p6mb opxw,b30g5npnsents 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 computer rated at 500 watts in aq5ot hr8aqev7)bz2 2o 120 V circuit. If all computers are plugged into a single circuit protected by a 20 ampere fuse, what is the maximum numq) v5o t 2o8e72zbhrqaber 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 four resistors to form a simplg bu3rs(2k 1 m)ui3 ocvph2n,he circuit as shown to the r)pub,3ug( rsv c h1ko22n3ihmight.
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 co66 wh .konim5yg( rsb c+ q/n1obyt8 11suede9nnected to four resistors to form a simple circuit as shown to tn(6/nqtud.1ek yb+oeb1gm6 r w ihs 1oy9 cs58he 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 -j 6opm+ f2f4xqg nxyr /(60t(ivbw jrare connected as shown. With t/(rj - 2y+wt6q r( on4 6bmfvpxig0jxfhe 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 switch and thv *r opq1-jqq0rbvf.; ree resistors are connected as shown. With the switch open as shown in the diagram the amjvp- ;rqf*01b rvq.oqmeter 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 three resistors are co/wq0vaf)e i*y nnected as shown. With the switch open as s e i)wyf/aq*v0hown 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, wh. du rbhnt.yt*t i9,6uat is the equivalent resistance? r 96h tnu .b.i,u*ytdt Assume that all wires are ideal, the battery has no 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 circui16tb ts g-l4vhy. ij9lt shown to the right with resl b4.jsy6gth9- l 1tviistances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 identii;mgs+bpqazs8da) 1f)n4z n0cal resistors connected in a combination series a f)am1nq;n0zp )+gdba4s is8znd 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 fivu ztemv 67x7y8e identical resistors connected in a combination series and parall7uv y78mx6 eztel 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 2qf7zy xp :-fx bulbs are identical. Which bul -y:zxf 7pqxf2b 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 and three resistors are co(17idmij5y1 ko1z bgknnected as shown. With the switch open as shown in the diagram the kioi(57ym gdj11k1b z 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 5s lsb jhg1wl 10u6 p5, jzrnzo8xi1-oand three resistors are connecte11hz 6 lixwbu1rs,p-5j l50songoj 8 zd as shown. With 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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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, awtodb/6 tg y4p+w2 8pd switch and three resistors are connected as shown. With the swit/wp+g2 p tyd 6b8twdo4ch 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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