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习题练习:.Resistor.

 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 metal resist)f/yt f ip:2kf aymv0zs9/z -9ik ou.ror 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 elect9iz.fomk 9/kt/fviy ys) 0pf- rua2:z ric 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 3o sx)qmi4:sk_________each resistor is th os4xsqi3:km)e 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 lightbulz)qcc )k6(g7lhfeq2 xb causes the filament to become white hot, whi)czcl)xh fk 267( qgeqle 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 replaced with LE8(s lnekcnx+ls1g-8 nDs. LED is the acronym for which one of t n+kx(l1n e8sl8 sn-gche 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 cross-sectionalmvnha8.f:; gl9k7yc+riu z2p 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. Wha2favc+ uimlz k7y;9nrgp 8h.:t 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 material. Wire II has twice the d is.:z4ma;b+ p-k r/xkpy9uc6j)vndt7 9cfxtiameter and twice the ltcn sjfbt.rum+kk7 da9 4z)/xy :;i xpcp6v -9ength of I. 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 material but hasuzpxo .b/0ocge6j eu462fr z0 twice the diameter and half the length of wire X. If wire X has a resistance of R then wire Y would have a r2zgopu fzr oe/ j.0x4u6c 60ebesistance 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 Leuk0 i,72 jmr7zzzx9f 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 u0977 fz,zxrike2zmj 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 Edisoa-mk3jk* shsgr gu ai i1,3)pzm- (cz.n wants to 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 mors u r1g i-h ik*(k,ja)g. -3maczpm3sze 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. 9 vn*tya zyze.1qpy9/ The length and radius of each resis1.vyay/ez9p tq nz*y9tor 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 resios1oa d(ki: ;astance 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 resistors is connected in series to a fourth resistor.” What is the equivalenk(1da;soo:ia t 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 interna ofqbf / 7b,xs6r6ndxwvt *96bl resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The vqwbr669vs/7*ob t bf6x,ndxf oltmeter 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 s3ag qk6 ey0yrrv1xx46hown to the right. The three bulbs 1, 2, and 3 - represented as resistovg1 0yyk6e4xqxr 63r ars 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 electrical c.hvc-y.m z,igd1 z/: 3/dw0y3alk+pxwr syjrircuit at the right. If the current in all three resistors iy 3dzycjvyrl. 3mg/kw -:.hpd+r0 /x1ai,wzs s 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 sif d-.rxd.ykpkvq/g.2 mple electric circuit composed of 5 identical light bulbs and 2 flashlight cells. Which bulb (or -q.pd k2xdf.k yg/rv.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 NOg)r*qx,l*f(dbfx fkn5;+:gq tut k-xT true concerning the simple circuit shown where resistors R1, R2f+ugk)dff 5*(t xxqq,glkbxr-;: *t n 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. Bulb Xm,7pq;vx9 ub+b, ycoj/;f jr x is brighter than bulb Y. Assume 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 choicecju,m v;xbj+ xpy/ ro;9q,fb7s 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 the identife d1xkyd t5(d1ysyp:2ied resistor in 5 seconds once the circuitxs: 1d d12ypde yy(t5k 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 simpl;icq-l , 4egxo 1+cfxfe circuit have the same resistance, which woul 1cc-ie4+o g;,xxfqlfd 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 current through the 6.0 Ωlwd9 xc+9 d;n-lz)aje resistor is z9dl jcd+)n al-;9we x 1.0 A. 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 coaq.n01iemd m-nnected in series to a battery. Suppose Ri mqe-mn10ad. 1 carries a current 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 connected in parallel to a baw3k3d re+ve) yttery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipatrd w+y) kve3e3es 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 coiliy/nd-9 )f dbm is rated 1200 watts and 120 volts. What is the maximum value of the current un) nyimbd9/d- fder 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 resi,v gqi+n9am2 s gp58qgstance of a 60 watt lightbulb designed to operate at 120 volts?mv a5n2g8qig p+9sq g,

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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 i hmws0tiu ,3l/s dissipating 36 watts of powei s03w,ulm/ htr?

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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 volcrxmgv; ;dqe /sax). 7t, 600 watt.” In normal use/q g.e;) ;x7smxvacrd, 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 NOt0u, zc4: yrszT be produced by a circuit containing only thruz: r,04cyzs tee 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 the following eqxd0 *j1kb qpze j.xpy:krq0 :zvq-s5: uivalent resistances CANNOT be produced using all three resisto ys*xq0p5:.xvpqkjz-z01 ed :kq:rb jrs?

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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 iwb )qq f 3m1zub ia4hpvm7i3/7n different configurations. If all three resistors are used in a circuit, how m7m1q 7aqiibwvbh p34z mf/u3 )any 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 l k2ikf:+lkmksb 88j* rzje 93resistor 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 r9lr fej*+kkszjb:l2k8mik 3 8esistance 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 R1v;*0vbwt y 9vgkn2 ;ig and R2, are connected in parallel, the equivaty2;*ki vwgg0 9b; vvnlent 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 vwvh3us kzo9g/2v 8f0 a resistance of 12Ω when operating at 120 volts. What is the minimum amou9vo0 vwv2sg8h f/ zk3unt 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 flows through a 4 ohm resistokkk71s8b9n a+h8 fnoy r that is dissipating 36 watts of p1 b9 kh7an nk8skoy+8fower?

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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 connected to 121bym(4kat7gx/ q),md4 srotc0 volts. If the pricebmoxt/(4cqgys )t 4r1dma7,k 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 cost to ei8ypla+f)h 2g:grmcl3 u8w*keep a 100W lightbulb lit continuously for 1 year at am2 * u)w+ar gh3cl:i 8ygfl8ep 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 to,e k 6,9n)btaxz*niy hrough a lightbulb results in a power of 24.0 W associated with the bulb. Which one of the following choices best represents the resist enb*x ,anz96o),ytik ance 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 opmglmz6e xtt) r;z3x2zw0,5 hj /80li-wtrtsf 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 ,i0 8gtr jp/3etl x; tmzx6hrl w2tz5m-szw0)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 resisr7vam/j wu,5 vtors to form a simple circuit a/v m7,u rvjw5as 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 batterq9 nqhgxyyd7m 3221;j mc odm4y is connected to four resistors to form a simple circuit as shown to thg7c qxy24mo 1h9q2m; d3yndjme 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 thre* xbhw;nh9oxjm5/bik56)p xo e resistors are connected as shown. With the switch open as shown in the diagram the ammeter readxi *b )p5mn okw569h;bjxh /oxs 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 resistorsb:qq 19:nhy 1xe zt1fo6u/9c kqdkr-a are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 ampezb6ehx1 qndk-q11/q tukof yar c99::res.
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 resistu 3cjwk7h 1 5 rm9pz6.)mbcmhqors are connected as shown. With w m9zch)pk3. bj6 mr7qm5uc1h 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 shown ty 8 f),jx4flnul/f;smo the right, what is the equivalent resistance? Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have identical resistance R.f48,n ljx)s;yu/l m ff


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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 rfntme*x0bjii8h 5 b*)ight with resistab*ibnj0 8 x5fie th*)mnces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 r;p:t -/gmb:op(pvvckesistors connected in a combination series and parallel circu( mogpt bvp/p ;-:kcv:it 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 connectejxd2d+hq ; v-id in a combination series and parallel circuit to a vol;q+j-xhi d2 vdtage 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 ident0ll0 ebsr/q; cical. Which bulb will be the brightest? ;eqscr0bl0l/


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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 idegfw-eht; g)* pal ammeter, a switch and three resistors are connf g e*)pwgh-;tected as shown. 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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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 s6ke,rd- ob -owwitch and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 amperes. -d6bwoer, k-o
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 cop pc,9c mhv-q,nnected as shp mqc,-p9vhc,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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