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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 el+mr67 tew3if-to qv(cectric current exists in the metal resistor connected to the battwovt t(e6 +7mi3fcq-rery. Which 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_________each resmo:c 1dfuaw9l 3 ls)wu.m)bu, istors9muw:3a))fb, dou1lcm ul w. is 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 wirek0g -6 exl(c oun60:en5crozz of a lightbulb causes the filament to become white hot, while the larger wires connected to the lightbulz(l-xoor0zc cg:6 u0e 6 n5nkeb 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 househol dpv1-d7bkhdbi 6cd( 2d lights are being replaced with LEDs. LED is the acronym for which one of the following dpvc 2b bkd1 (hi6-7ddchoices?

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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 Lw7 hcf hu usq0/)t+b8zp5s; dn 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 0htfsupncqb/zu 8 +7s d);5h w1/2 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 sa)orj 2 uwx*4(,jst+t:b tjyoame material. Wire II has twice the diameter and twice the length of I(jo wt 4yra otjb*x,2u+t s)j:. 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 30b*w r 4l nm.njobvv)1hmrg 0the same material but has twice the diameter and half the length of wire X. If wire X has a resistance of R then wire Y wouhv0jmrr b)3lb nwg 0*m4o.nv 1ld 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 ou al3f7b8 +rr2ti8qjr. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens to the resista 3i8f2 8lu bot+aqrrj7nce 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 bhii 9cb 7mj n l2qyyx-+qn:4p5z 1:xdmake a brighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to make the y +4 cx9bqn z:h:2jd- mlnqp7xy15biilightbulb 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 areq.:a/n g63xb3ext b- (k hbmhsgq j5few0g-y- made of the same material. The length and radius-fx / bge- hy-h(6a 5g3twe x.ksqbb0 jmgqn3: 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, arewmw.(4detwx : 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 resistors is connected in series to a fourth resistor.” What is the equivalent resistance of this arrangement of four rwm 4(ext.w wd:esistors?

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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 resistankk k;.lgw;q;vkdy 0l9ce 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading i9 l; klgk.ky;0;wdqvks 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)k5ylu 2h ntl3 1, 2, and 3 - replky)h t352ulnresented 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 el pzugih-wn rnvy /9-;/ectrical circuit at the right. If the current in all three resistors is equal, which of the folloynv /z;gu-h r9-pi/nw wing 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 righmt;i*:k8usz*+u y wdnt represents a simple electric circuit composed of 5 identical tz*wsu;nku *8+y :idm light bulbs 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 statements is NOT true concerning the simple cir twl6 ;cvm1d*xcuit shown where resistors R1xdv6w*m lc1 ;t, 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 tou6c6ex06h uf j a battery. Bulb X is brighter than bulb Y. Assume all circuit elements are ideal. If bulbs X andY are connected in parallel with fjc6uhe06 6xu 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 wilp*1kg4l(q+ eqw g q*ycl pass through the identified resistor in 5 secondskwyg+ 1g4qeq q(c *p*l 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 thwkjz(h/e pjkh1 2kja)y sm7z/e p*z9m8oo +,de resistors in the following simple circuit have the same resistance, which would dissipate the /kpz1k,eh( m28msy9 aw7e jz) jd+ohp*ok/z jgreatest 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 current through b0vuxl7 jpz a3)cq bkz)p )3.jkfa;s5the 6.0 Ω resistor is 1.0 A. What is the power supply voltage V? .j;)vf5 7bkzpuxsq jzl 303capb) )ak


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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, Rzw x734zg78bj.wapduakv,,y 2, and R3 are connected in series to a battery. Suppose R1 carries a current of 2.0 A, R2 has a resistance of 3.0Ω, and R3 dissipates 6.0 W of power. zwvkaybz 7wg, 7.a8x p3j,d4uWhat 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 angx3xohz0i: ak2rrr; . dR3 are connected in parallel to a battery. Suppose gx kr. 0aihrox23 r;z: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 voltslg:,qk 9*wf rx. What is the maximum valul*q9 :grk wx,fe 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 resiy/ xwihb(u3l elu3- *wo7l:prstance of a 60 watt lightbulb designed to operate at 120 vol o:blr(xh7u-3le/wy*wil 3 upts?

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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 * lmc q;ykiapbl:m, ,+f;2tfhflows through a 4 ohm resistor that is dissipating 36 watts of power+ ilcp h,*aky,;;:tmmlqb2f f?

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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 w)sg 7*m r8qgl2 ghmq8xatt.” In normal u h7g2*xsr8) 8 qmggmlqse, 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 be produced by a cihm zgm,4ftb 20rcuit containinmz,gf0 4b 2thmg 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 resi7nj4 nz gt0yo+stors. Which of the following equivalent resistances CAN0+o4nygn 7zjt NOT 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 be connected together in dg/c8ji o. (vi4p3a, ak5t+dyiwg bw24)g p bgqifferent configurations. If all three resistors are used in a circuit, how many differtqgagw)a4dovi 5ik(gb 4b /cy.3i8gjp , p 2+went 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 re/ugch e2toz)z) 1hfrr;ly6(nsistor 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 identi h(cz ;fl g26rhnyer1tz)u/)ocal resistors are connected in series 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 resistance R1 and R2, are connected ./f4siz: lab0vygj 6yin parallel, the equivalent resistance of the combination is 5Ω . Which of the following statementsfiaj 4g6yv: /z .0blys 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 des2. rn5vp r7th3yg;trmgl*q iq32r1c xigned such that it has a resistance of 12Ω when operating at 120 volts. What is the minimum amount of time that it would take to warm 0.45 kg of w7m x1ir. 5rqrv3*pgqln ryth 3c;2t g2ater 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 odtvyi.wa++ or:k c f+/hm resistor that is dissipating 36 watts of dyvarcit+ f+kw/o+.: 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 dradt,bx4t7 h(sd ++updsws 13 amperes of current when connected to 120 volts. If the price of electricity4h++s,dtx t(dsb7 pu d 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 36fm bk2 hi37le; zkyhs-3) j9gowaawcost to keep a 100W lightbulb lit continuously for w3y9hijkk s-3 7b2ae) 6zh;3mo glawf 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 pow*xjvm i5 ou3y(er of 24.0 W associated with the bulb. Which5y (omu i*jxv3 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 f+ (v11m qz8rjbozltcbsr b; * k2*lv-samily 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 ma-k2*+lm1*j qb bbz os t8rr(;vcvzsl1ximum 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 form a simple -jc djb37r.sk6o6r iwcircuit as shown tbod3-7j srk.6 i6cwr jo 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 connected to four resistors tqol agnm444 s t(q8uo2o form a simple circuit ao( mgaqnstl4u 824 4oqs shown to the 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 ammeten h4p5o,g -mnmtg) 8kur, a switch and three resistors are connected as showng854k go ,tm)nuhnm -p. 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 switch and three reso0te3 3yvznrh 14i0 gyistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amper1 h zn0v itgy43er03oyes.
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 battxmc2eqfy3 h*z );r e-zl(a-caery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch oy 3crze - f2lhaxmz;* ac(e)-qpen 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 shown to the right, what is the equivalent resistance? ue5 a*gkm/5ri7pi9h u Assume that all wires are ideal, the battery has no internal resistance, and all three575pha9/im* kigeuur 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 ej-jmkl p84. cshown to the right with resis pm k4c.j-j8letances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 7e0, ls -h1mm)idw;hvvb gdb)identical resistors connected in a combination series and parallel ci 1bv;h)l vbwmhg)id0,dm7- s ercuit 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 combinatisnz/omw9n.se vi (gt(l*l(7b on series and parallel circuit t.llns9gb 7o(/z( m*ewnv ( stio 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 thewp,:+zf j ln0+i an)no bulbs are identical. Which bulb will beio)j l+0p:anw n ,zf+n 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 resistn 0eyqc7 e 4nyc dxox2hi 7y.jzm+l0cab0:-c7ors are connected as shown. With the switch open as shown in the diagram the ammeted- i+qm4o0707cj7 xclycynbxh2en:.cay 0ze r 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 resis*thx ;1fcpne:uw 4 l3 qkh:8yboie( :gtors are connected as she1i f*8ptgb;ke: :qxw cy hhl3(un4: oown. 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, anx d 2op/96tkokta+tp8z r5m3o ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 69+25o8t pzto otmp dx3/kkar 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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