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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 meta0)zfvu ; 8wjv(g)yd 4 2i.d0lgxpbzifl resistor connected to the battery. Which one of the following choices best describes the direction of electron flow throughzj)zi0g8dg4f0 v(lwu b pfv.;x2)d iy 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(lmd dl9i w7 a4nsn2;u resistors are connected in parallel, the_________each resistor is the l wum4 n2l 7idsn;d9(asame.

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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 wirba1ripa* 4s m; l0usb/1etn9r e of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This happens becauseu9is*nsp0 r; babra11m e4 l/t

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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 li.16,tdx vdn prh93fjy d)z0 bdghts are being replaced with LEDs. LED is the acronym for which one of the follow,. xdzj 0hb9 dn1vypd)d3r6tfing 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 cross-sectional area A+2. si 2gsrod9pi 8mpa. It is to be placed into a circuit, but it first must be cut isi 2 a.do92pgmi+r8sp n 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 madeqgqzi3mxvq w-7v xy(9p-.(n e1op ) ys of the same material. Wire II has twice the diameter and twice the length of I. If I has resistance R, II has resistanco xv(wq-pqi g-x9zm1p)73vyn.y eqs(e

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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 twicenz(j o prj4/si8sio9n: dm yrhm-8.5y the diameter and half the length of wire X. If wire X has a rend9 snr - imos(iy4j8pr o.m z:/5hj8ysistance 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 hab :ixx0xse* x-s length L and radius r. This piece of material is then drawn so that it is a cylinder with new lengtix0* s-x ebxx:h 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 make a bright)( z(icz*qm*)m(vy xk aq3 otner light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order t*m*)cnqz)((ak mi( vt3qxzo yo 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 ofyl 15zlle e7iew19 mu6 the same material. The length and radius of each resi9ewm1e ezy5ll76l u1istor 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 connecl2k 3k 8-4u/z o9j uajq9wmsrkted 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 resistors is 8 kko2m-s 94wauqz/ l9jrkju3connected 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 voltmeterv 4z//4iqu (ohu yyzn5xa(5etk 3hiw. in the accompanying circuit diagram has internal resistance 10.0 kW htyw/ /uixi 4zau4.(e5(h3qzvy5 n koand 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 shown to the right. The three buynkg.ogr5 3 ;ulbs 1, 2, and 3 - represen5u3gn; gy.kroted 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 electricad pus: ,1nuwpxbbd2 +)g:o: dpl circuit at the right. If the current in all three resistors is equal,:dp2)ppu:o1,xd nbgw d :+u sb 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 electric circuit composed of 5 i7horg4g 0y/x gdentical light bulbs and 2 flashlight cells. Which bulb (o 4 7gh0/ogrgyxr 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 fol)w 0nve (r. sovz9v:fflowing statements is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 (ew90v.rffvo:n)v zs 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 :hix*) t,mupyconnected 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 paral:hxm)p ,*i utylel 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 passb 21bql,tw 2ve through the identified resistor in 5 seconds once the circuib wb2lq 1e,t2vt 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 haaibv0 1 no 1fwbmk3m+.ve the same resistance, which would dissipate the greatest power? w +1bmkobf3i.n mv10 a


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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 Ω p gv s1furwj.19awk.- resistor is 1.0 A. .1 sfgpravku1.9jw-w What is the 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 connected56eiimlgu,z82mrkv r* s2 c7w in series to a battery. Suppose R1 carries a current of 2.0 A6w* g5r2 mm,zc kiluse782ivr, 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 connected in parallel to a bat v.(:pxzr ecw+ ,qjs8; 8ajwgitery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 diss s(q;zeca +wpxjj.i8vg r:w ,8ipates 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 -9z8zdlcs+zs (5us y ecza4:awatts and 120 volts. What is the maximum value of the current under these conditio4cslsc z8d (9ya-az5u + z:sezns?

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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 m:ztz l:2hj,o 60 watt lightbulb designed to operate at 120 vjltz h om:2,z:olts?

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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 rt;v94dqzbqdr-g;37ox vn ;qqesistor that is dissipating 36 watts o- b 9 qrond; dq4;vx3gq;qt7zvf 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 ma4tdrt*/q9 gd rrked "120 volt, 600 watt.” In normal u4t/gqrdt d*r 9se, 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 bct:j4 i8 z;fx+codyb0ci0n *ue produced by a circuit containing only three identical 6Ωd0c0xo 4c;njtfu *8:iyz ci+b 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 uq56dya2f v,y/lvti. the following equivalent resistances CANNOT be produced using all duylq6ya.v,/ if2tv 5 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 togethtn ecn2 dz,9 d/j2j+;ps *arxger in different configurations. If all three resistors are used in a circuit, how many different /;e9datj xzcs2d ,j*nrpng2+ 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 convval.e ; g.4wlmqnqv.8xj uon*4oh 83nected 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 ser.qqg3vm.xv *. o lnle8n 48o jwav4uh;ies 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, having resisg1mib k+c 7ug8tance R1 and R2, are connected in parallel, the equivalent resistance of the combination +bcg8m17ki u gis 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 i ),fbu/lmp- 5 r)putvq-tonw1t has a resistance of 12Ω when operating at 120 volts. What is the m),- 1twmprl quuv)btp5 f-/no inimum 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 f8e(9hw ka*z1urebk ehu 1a /*olows through a 4 ohm resistor that is dissipating 36 wath*aueeuw1ze(o r/ 9ab 8k*hk1ts 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 jpdh ,do2w)u-draws 13 amperes of current when connected to 120 volts. If the price of)d h2u op,j-dw 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 cowt*huu(+fi1v k7 /;f xu f/beost to keep a 100W lightbulb lit continuously f +h bvk;xf ie1uwf7uut(*f//oor 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 in92oso 6,jyu )yqbq kh9ws3-fw oh:p( k a power of 24.0 W associated with the bulb. Which one of the following choices best represents the 3wwf9h (y bk:q o,yphsk)6 uoso -qj92resistance 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 co i-q*9eb xf f7oo* ,3aj7urqaqmputer rated at 500 watts in a 120 V circuit. If all computers are plugged into- 9 qoief*, oaq77 auqrbx3j*f a single circuit protected 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 ny4,t +hqb41h, vdr2.omjyd 7a(kk jm to form a simple circuit jv4mahn.yjr o(bdkhmytd,4kq1, 2+ 7 as shown 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 connf(qcif dqb- //kt30f, ayk)veected to four resistors to form a simple circuit as shown to tfaft cd -feb 0v /iqq(,k)/ky3he 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 redj bxexx .5*k0sistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes. je x x*k.xbd05
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, anqn(6na3kc uqd*f1 0 gz ideal ammeter, a switch and three resistors are connected as shown. With the switch open as (ugk 06q* c fd3nan1zqshown 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 t y- i:y- tt)g jz(ckvlizdg71;hree resistors are connected as shown. With kg7v 1(iy-cd:z zt;g iy-jlt) 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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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  12.14: For the circuit shc*,6 lk )kqwxmown to the right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no,*lq k xk)6cmw 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 circuit shotf,2oe3 vf(qk wn to the right with resist( voefkq,2t f3ances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 connecdw xl,8tix 59mted in a combination series and parallel circuit to a voltage so ti8mw9xl,5dxurce.
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 identicalq i/z *yy+pl6k resistors connected in a combination series and ppyy ql/+*k i6zarallel 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 qd7gi3e3yya9v 77 tma9fci)z, all of the bulbs are identical. Which bulb will be 7a3i9a 7yvgz e9qd t) cmi37fythe 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, anmifi6;p6jb j. ideal ammeter, a switch and three resistors are connected as shown. With the switch opf; p.6i6jm bjien 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 ideal ammeter, a switch and three resistors mm(-k2 :tdl +tp /b24ypncyhs are connected as shown. With the switch open as shown in the diagram the ammeter s t(2tph2d- 4/y+mypl:cb mnkreads 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, a switch and three resistors are conn f-e(m u0k-zofected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amp foez(mf0-u-k eres.
When the switch is closed, what would be the current in the circuit?


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