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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 sn pr;,z, 0jauexists in 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 throrjsa,pz,u0 ; nugh 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 resistorl e 4cwdzu im3*j8o bqe.sr3+1s are connected in parallel, the_________each resistor is the sasoil4.eurzqc m b38je*13dw+ me.

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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 througzc91 a104xca0oyf hych the thin filament wire of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. T 1ac09cf hz4y10coay xhis 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 beiui u6jqqjj/j;/rcg 1cp3t z7 -ng replaced with LEDs. LED is the acronym for which one of -j cugq/i1prc j6/jj; qt 7u3zthe 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 graphipbe4h3hq (/ xmayms:5 te resistor has length L and cross-sectional area A. It is to be placedq 5(b3: s hhp/mamex4y 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 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 mate 9p92ymhzx f7:o6meq erial. Wire II has twice the diameter and twice the length of I.yp hzm7xqe92f:oe9m 6 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 materi e+.,7d k5pt66gaxe:xdl+ himyc6dvpal but has twice the diameter and half the length of wire X. If wire X has a resistance of R then wire Y wo6xm td dvp6,cyikp ++e5.da7 h:6ge xluld 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. This piece of material w*+;inkq0lkw is then drawn so that it is*kww;nkq+i l 0 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 Thomasbut) :fx.b- hr Edison wants to make a brighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in o ubt xr-bfh).:rder 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 made of the same material. 4- 5:gt:uptpbwxzlee,jr (8i The length and zuxbtppr,(ig j-:e84 l:w 5etradius 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 connected to a battery in th1m0-.a4 nc (phcvc3afp8tqn ve following way: “Twcpan .1fqt4hpvac (8v03c- nmo 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 internal3vk/skok9x5n resistance 10.0 kW 53kks/xokn 9vand the ammeter 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 s1g*w-utx g;zq hown to the right. The three bulbs 1, 2, and 3 - represented as resis;g -gutwzq *1xtors 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 o(f(u6flufyh e5; 6myc xnu(- electrical circuit at the right. If the current in all three resisx((6- nh ffu(y; luycm5u6fo etors 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 simplee);q,r1a+d gtabzndv (rt;- j electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bulb (or bulbsr1zgt tb+(d -rad;n);j v ,aqe)
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 statemenoi.dp i4r25ju ts is NOT true concerning the simple circuit shp .ji5d4uio2 rown where resistors 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. Bu3 tjwm/ aopz3d3.t.fi lb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected t difzo.3w./ 33atjm pin 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 coulom3 n79-h.tqamnf7e uae wf)4gpbs will pass through the identified resistor in 5 wn3u4-nf).tg7ef aqmp7 he 9a seconds 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 in0,eyy+p okvzg5p d.*)ta ,rx(zisy,k the following simple circuit have the same resistance, which wouldek ,z(g.y0dzpy,vyx)apks *+t,or5i 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, 1r7g.zdf kxr 12onn6e the current through the 6.0 Ω resistor is 1.0 A. What is the power suppe1k z x672dn1ognfr. rly 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 a *ps/x/ucr v4dre connected in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipate* scxp4vr/d /us 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 connygyy0 j;a yvi a*+5mr.ected in parallel to a battery. Suppose R1 has 2V acro* ay0 yy +yjgi.mav5r;ss 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 fm:wq8 ww.e8u 120 volts. What is the maximum val:wwqw fm 8.ue8ue of 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 w*j3 +,3s ; z,cpqimz wycwfed:att lightbulb designed to operate at 120 vo,q*m+p sdwy3cw;3eifzz:j,c lts?

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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 res1fscy(: /d, mhs ;de2p dkwz+nistor that is dissipating 36 watts fm ehz1/ycds2 d p:,(;s wdnk+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, 600 watt.”0g*yvjyvnb frc e3to0, 2k4: r In normal use, the current in it iocftrkv: e,00y2vg*3ynbjr 4s

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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 resistancesnyb h0bmuh k 3y y05+z.vmd+2e could NOT be produced by a circuit containing only three im vk+yd 2+mb5h0ebn u0h3yy.z dentical 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 equivalent i:k-gv l9k +a 6zk 08sk 1or7rhg4whairesistances CANoak r kl +68khwrhk1 7g4gz:0s-ii9vaNOT be 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 b/8vwbt:k a jj:e connected together in different configurations. If all three resistors are used inj b8v/k :tj:wa 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 resistonliy+k ,md ,z,l)ka9e r 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 internal resistance of the battery is znl +zm,a dk,lyi9,)ekero.

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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 connectedp:a(s6rnhlv( ;f0s yg in parallel, the equipg vy; rfhn6sa l:0((svalent 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 that it has iuk8bha826 fea resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would tak he6k2a u8i8bfe 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 dissipatin nsgi k/i5yx lgkyok:q +v39r(- i1)wig 36 wa:xs okn+(i-iq)k9g wiy ylikg3/1rv5tts 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 currph s 6w+h5y+lbent when connected to 120 volts.lyw6p 5b+ shh+ If the 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 )zgc: m5iq4e xcost to keep a 100W lightbulb lit continuously for 1 ygzx)cme:q 45i ear 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 resul+e-4z *y 7s*phczu .srrbvckq xo8l1+ts in a power of 24.0 W associated with the bulbryc+ 8 -qezou 1cz7vl+* px*4skbrsh .. 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 computer rated at 500 watts in a kmnsic6m-)bm2a + e9cnqhb 29 120 V circuit. If all computers are plugged into a single circuit protec eckqa9mi-c2)ns+b 26mn m9 bhted by 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 four resistors to (q9.t ht;w x+qxh 1)4i5 zpqzo.nxrmmform a simple circuit as show qzhp5nz94t(ir1+o txxm)qhx;.qmw . n to the 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 connectex6)by pk ten9;ne80qxd to four resistors to form a simple circuit as shown to 6q n)ex xptbykne;980the 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 am(a0ih x tb)dh5p pq))kmeter, a switch and three resistors are connected as shown. With the switch oph d5tp)qabxh)k0) pi (en 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 batt2.dg z4oq9iux ery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter dogu24i x zq9.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 batteor .2vsi+2ubs ry, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as showv22isr+.ou s bn 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 shx,csz.69yl3m(e rhs/t4 lgjq own to the right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three r.r3,6x y9ml ctss/z gj(ehql4esistors 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 the right with ressm l*+ gbvv q-lxu/v/4istvllgv s/ -m/4* uv+qbxances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 idth 7 .z1qre6( sqwsw(yentical resistors connected in a combination series and paral ws(7zse6qhyw. t1qr(lel 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 wj+sk-1b7 mn6 na -g66besquf resistors connected in a combination series and parallel circuit to a voltage source. fnksu- jw+6e6ans 6 qbbm1-7g
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 79asou q98taeq agl ;7are identical. Which bulb will be theo87alagu79q;9 ea s tq 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 an:5 +k-8t ,m(naepsl ,homgouud three resistors are connected as shown. With the switch oup+amu, kg(sh:ot8 em, lon 5-pen 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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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.22: An ideal battery, an id :co1*sxl oj b,u6h6tw -nrd8oeal ammeter, a switch and three resistors are connected as shown. With the switchucjotw o-sl 6*hd8 6bn:rox1, 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 ammexf p38,qzocvm)+za v8ter, a switch and three resistors are connected as shown. With the switch open as show) +8zmxvqv o3cfp,a8zn 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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