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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 c g+/fsp k3g)dr4b il;jurrent exists in the metal resistor connected to the battery. Which one of the following choices best describes the direction of electron flow through the resistor k 4lfpi rbg+/3;s)dgjand 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, thw -.f j6x 16w0oevelpde_________each resistor is the samvpe-6dw j f1 le.0ox6we.

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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 lightbulr/u tubj5bh /:b causes the filament to become white hot, while the larger wires connected to the lightbulb remain much coolj:5uurh// bb ter. 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 +vnxzm wy 2o wf3aps6+u (lkc1;lhv/8,dwm;xwith LEDs. LED is the acronym for which one of the following ,l6po +z3lyhd+ v;x wk18xw/ ncva2u (;fsm mwchoices?

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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 w6bn5t9l ah+g .nse f3A. 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 resistivity of the cylindrical safhg6t. +9lnb3w5neresistor?

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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. Wir sletqg3(0rs+l*;jh g e II has twice the diameter and twice the length of I. If I has resistance R, II haj htg *lrel(s+gsq3; 0s 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 has twice the diameter and ha co5 *hewou4c0 )pad,xlf the length of wire X. If wire X has a resi4c d5,)0hxp*cwo uo aestance 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 has length L and radius r. Thirkc *a-rl:t 0yjn, n;n2e8oofs piece of material is then drawn so that it is acy lne2ftn-;*0:oj rork8 a n, 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 Thomas Edison wants to make a ab mdpm/1jz8*brighter light bulb. He decides to modify the filament. How should the filament of a lightbulb be modified in order to bjpm *8/z1dam 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 samw s;r:ucr 0ot8e material. The length and radius of each resisto :u;0cso wr8trr 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 re.bcxt1n7.,c j,5+hu tvln iey sistance 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 equival7 .l yht+.,nxtcenc,uib1 5jv ent 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 cy y3l0;t1*wjw )twrq uircuit diagram has internal resistance 10.0 kW and the ammetetjq3yl;t y) 10u*ww wrr 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 compoukz6wk t9 y*j)y5-dxwp:ld3 mnv1y da;nd circuit shown to the right. The three bulbs 1, 2, and 3 - represented as resistors i:6kn zjp)w-dw3ydy ml1t9*vky5;ax d n 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 circuit at ,0o zlhtnho9 .the right. If the current in all three resistors i oolhtn0h. z,9s 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 represents2lmkw o i8-.o-hn iou)buo.: b, rfgw. a simple electric circuit composed of 5 identical light bulbs and 2 flashlight cellu.-,.2i rgwk-. m:obniow oh) 8bu lofs. 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 followieda vbu*9r2v. q 5)oiong statements is NOT true concerning the simple circuit shown where resistors R1, R2 and R3 are have equal o iarovu)d5ev 2*b9q. 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 lightbulbwo j,nb* i)gq*s X andY are connected in series to a battery. Bulb X is brighter than bulb Y. Assume all cii)qj*ogn*, bwrcuit 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 coulombowwns77bjc2x 4 qfc-2s will pass through the identified resistor in 5 seconds once the nwoqf74b js2cxc w7-2 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 in the following huy2+ f ab-t7 zkdab* 1.qujq 0s4p7qz simple circuit have the same resistance, wh u q42pyj *ua7.s-k 0t+z7fzbqa1bqdhich 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 current through the 6.0 Ω rew1n r8 xe6q0iusistor isq i1enx068wru 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 connected in series to a battery. Supf0pab e*h;lny -0 xgesu;-)mu +4m g xi3ons0hpose R1 carries a current of 2.0 A, R2 has a resistanceusn;m-li0gm0p3e beg-xouxhany *h s ; )0f4+ 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 parallell)7+e0oqdjk7 lyg xm 95c ka;t to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. Whatjetk)lo;90757g+xcm ykqd al 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 i8s*kxtc26;vp sl5uc w6;njx e s rated 1200 watts and 120 volts. What is the maximum vcl6xs ; p 685u2jnvt*w;cskxealue 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 watt lightbulb designed to ope*w (nb+0gmanmix- v8oop7zu /rate at 120 volts? + bo/pgon(m v*78n-xmuw z0ia

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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 thwb e pkg6, 9zdv6wig.gi g1s:t:3nq9 ualw56nrough a 4 ohm resistor that is dissipating 36 watts of powe6w a 1tve iq5nzwugg6sb6gi939: g: ,nwpd.lkr?

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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 waxtkrg bk9,9w c. jcsvj0603xstt.” In normal use,9kg, 0sx.j6b 3w9 ctcjsxvrk0 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 b3 .pwixyf0 jf6yed9r*q 2 -rw5 umfv-fy a circuit cont32fmyx95fjrpw6yv *q if-0e. d wrfu- aining 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.en:yr rcoekj+36v vmf53 vs7:acea9 (0 Ω resistors. Which of the following equivalent resistances Ce5v 7 av3(r6fvcn3 c+9ejrye k:ao:msANNOT 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 v-nf 9kwv7h-qcan be connected together in different configurations. If all three resistors are used in a circuit, how many different values of to vfw-v-k 9qn7htal 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 resiswtc*d a7icw,.tor is connected to a battery, a total power P is dissipated in the circuit. How mui.w,ca ct* d7wch 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 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*l 7dxklx d9 o,)rd1bkl5zg0b in parallel, the equivalent resistance of the c)l7ozxkd1gdkll 05bbr9, *d xombination 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 ha 8l q).*c.r szeha(kft k/h:zws a resistance of 12Ω when operating at 120 volts. What is th*)z .r(stk. f /kwaqz lc8e:hhe minimum 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 flows through a 4 ohm resistor that is dissipatinf,,2idm ,-a sgy qbce:g 36 watts of power,sg,q2e -, ma dfb:cyi?

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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 dz6fbc-c heeq t */yy1 tgjnl797x+*vpraws 13 amperes of current when connected to 120 volts. If the price of electricitqfjtpyz+eecxhv l**6y 9 ctnb1-g7/ 7 y 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 id-d/e-da5 s igt cost to keep a 100W lightbulb lit continuously for 1 y die5-d/asg- dear 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 curyk9;9kecp sm6rent of 4.00 A through a lightbulb results in a power of 24.0 W associated with the bulb. p s69ekkyc9;m 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 owxl8i ml8t 5x oduj0e 8q6r8c1lns a computer rated at 500 watts in a 120 V circuit. If all computerstllo8 i80rxd8 j qc1ex6lmu58 are plugged into 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 /8w* cre/ggacfour resistors to form a simple circuit as shown to wc8/ge*gr/ac 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 to for4 szcwkzj+ 6h0m a simple circuit as shown to thzwzk046cj+ she 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 ssi6 +:0cy v ylmbsb:o eeov(-6rbmd0)witch and three resistors are connected as shown. With the switv 6 lb+: mm yood -yscbe06(0)ri:esvbch 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 resd 4ta8hwi y 5,a;h5nq8izwyu 8istors are connected as shown. With tu8nhyy wh da w4 z8iiaq;8t,55he 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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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.23: An ideal battery, poi()oa h67 kjgh5yg. an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as show 6ho.a(kyhpjg 75)gion 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? )2 -ltr(rauwhy5b0ib Assume that all wires are ideal, the battery has no internal resistance, and all three resistors have identical resislbbr5yth2u)wi -0 ar( tance 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 circu3 m7xi,i ucde-it shown to the right with resista-xci ,mie7du3 nces $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 connected in a combina; 7pa iosg4b;rzaad6 d3-ia 4ftion series and parallel circuit to a vz;374g6i pdas aifbaa4;od -roltage 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 compfli/a:w; w *hbination series and parallel circuit to a voli;lw*:fh /a pwtage 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 identical7,szfieg f0n4. Which bulb will be the brightest?0ze74ni ff,gs


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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 switch6ezqegh g/8w/djr g7o k9, y9(xpt8 pf and three resistors are connected as shown. With the switch open as shown in the diagram the ammeter reads 2.0 egpxpoghyz,kr/8/q98 d7 9j 6gwef t( 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 rejq zbqux)frhy,c) 1 a.k7.p lh7vk9e,sistors are connected as shown. With the q yjxl.7b.z ha ,vpk9c) qe) f1k,uhr7switch 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 batterk*e2df8-p j5airfpn06 9;4bcmo k dt ly, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagodmdiek856-*af; rn4jfcpt29pl k0 bram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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