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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 resistor *wl.uiheadas ( 4uj7q/-0jqb3c/ sl o xh5,re connected to the battery. Which one of the following choices best d3sqha (7o45/xu- j/u.r hlw, jlq*ecebdi as0escribes 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 parallgz)xwg v,fl+2 xbz v -m0hcriful761/el, the_________each resistor is t)cv2/zxf1irg fg 07,lxlzh-v6uwb m + he 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 lightbulb causes the jv9.4cyi:hq+ kr(llm filament to become white hot, while the larger wires connected to the lightbulb remain much cooler. This mi lrj.9+c(lkv:h y4 qhappens 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 lightq8,*eg mp:he 5 m,gdqqs are being replaced with LEDs. LED is the acronym for which onqegqh mg,5me: p *,qd8e of the 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-jw7uo4 7+c o o/fid0rrsectional 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. What is the ratio of the new reoi wo 7/c07+rur 4fdojsistivity 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 materiagu0h ,pdq+ fwn5a3a 5al. Wire II has twice the diameter and,aga5qawudfn5 0p h+3 twice the length 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 bt.6t-ba, gxpkm( p2 8e.bauhvut has twice the diameter and half the length of wire X. If wire X has a resistance of R xa.m2 8e-gp6a.vth, b pb(tukthen 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. This piece of material9qldd 5 fcnu7z6 j+wt, is twdnf7jc,+d9 u qlz65 then drawn so that it is 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 Thomas Edison wants to make m5(1i3stf jmv 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 more light at a given voltj f3(is 5m1vmtage?


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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.07: Three cylindricadi6gqi9yzq ix8 g;r. -l resistors are made of the same material. The length and radius diigiqq6rg.-;y z8x9of 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 resistanrlz3 00cjej t,tii 64ne0dse 0ce 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 tl3cid00ejstjri600z 4,n eethree 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 accomp+zivt aq.qk/ 6anying circuit diagram has internal resistance 10.0 kW and the ammeter has internal resistance 25.0 ohm. The ammeter reading is 1.00 mA. The voltmeterz q q+.tik6va/ 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 sh4 )w-ebp1ck5 dqdziq,0a 2rm aown to the right. The three bulbs 1, 2, apbk zediqq ard-0)cam452,1 wnd 3 - represented 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 electrical circuit at the mcd2)600 vwws(st )ngk egw4xright. If the current in all three r ctew0ms04)2wd( ws6k vx g)ngesistors 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 simple electric circuit k85 2,kk.uka.6y*pg qa(gn. x snopne composed of 5 identical light bulbs and 2 flashlight cells. Which bulb (oou nnagkpe,ks 2 .6qy5x .kk pa8g.n*(r 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 followingh*59mjxh1 w+tmd d)2yep gwc/ statements is NOT true concerning the simple circuit shown where resistors R1, R2 d ymm1de9wwcg+* h/)h2 ptjx5and 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 connected4) g9:- nmfgqncga bg) in series to a battery. Bulb X is brighter than bulb Y. Assume all circuit elements ar)fg g):nggqcm94 -anb e 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 coulombs will pass : tuya.ep,gg my1l-9z through the identified resistor in 5 seconds onpzlag t1,:- y9g.muyece 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 in thiq sn 99d28 u ((uwyfcsy((jche following simple circuit have the same resistance, which would dissipate the greatest pj(s ycn9(df9i2yc (u(w h8uq sower?


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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 346zu8 e :-jncpjsfpq resistor is 1.0 p8jeu q6j:s 4ncpz-f3A. 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./x;: in4 5,kasa f n-wsv 6xa2sqf)kuu Suppose R1 carries a current of 2.0 A, R2 huaak5vi;)/ , : xns2u q saw6fsk-4fnxas 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 differe2vjs4- vv :wtint resistors R1, R2 andR3 are connected in parallel to a battery. Supp:24jt vv- iwsvose 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 120sldm-cv6k t(b )s0is;0 watts and 120 volts. What is the maximum value of the currens v-6dt() cmsblski0; t 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 kxv 7kw )7hug kf3c2f;of a 60 watt lightbulb designed to operate at 120 volts 3gf2fk); cwkvkxu77h ?

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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 )k,r+ueqq6d xflows through a 4 ohm resistor that is dissipating 36 watts of qrqk+ e)ud ,6xpower?

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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 pre 2wr/iu2gbv+a50afb x ss clothes is marked "120 volt, 600 watt.” In normal use, th/a5wgi2r ux2+f0 v babe 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 aug8 cmp- *z 65oxk: bj+phf4cy circuit containing only three ide+uph*kc86f:-y 4z gjo 5cxpmbntical 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 f-ie0no:n cm co9i,3gresistors. Which of the following equivalent resistances CANNOT be produced using ale :cn3mofi cgo-9 in0,l 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-vkppj3,ezj 4kpe g 8+ in different configurations. If all three resistors kjvep ,p-z k43j+e8gp are used in 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 resistor isuejkash+)gb6m4j (2m 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 resisshuge (j4)+m2 akm b6jtance 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 rey7qy xa .:t7cay(pl2ftfoe+8 sistance R1 and R2, are connected in parallel, the et+f.7e7t :yxoply a2yqc af (8quivalent 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 wx5e e 0 1x9yicvaa +.6,wbtotit 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 otw5 9+6. ecx,yevaa1bti w0xwater 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 dissipa07q/bs hl/p shznn(ct )4d* cyting 36 watts oc b7n/4t lpnch)y zq0h*d(s /sf 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 current when connected to 1qr ;;x2wn oymrwn/ u2:20 volts. Ifnwowr;x;:y n2r/ um2q 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 w+x1vc,yohs3ay5d6np ould it cost to keep a 100W lightbulb lit continuously for 1 yxdv13yc5poy,+s6n a hear 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 power of 24 ( zygwp:du*ce36+qxu.0 W associa due p*g+3 wyc(:z6uqxted with the bulb. 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 fae(iqia 1 9v g5nuz1yc5mily 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, whaz1qig9v i1y a5ue(cn 5t 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 resistk6l+ c4s* rxxmx w)ghjxp;2 +gors to form a simple circuit as shown to thekgwx rs++lc 4 2p6mx*;jh)xxg 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 form a simbdbp*6o2 1exoj epse0d/x 85 kple circuit as shown to the koeoxep 2s58x0dpdb*6 j/b1e 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 :4b ut2uj5 vyaresistors are connected asy a4u v:jt2b5u 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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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 resistors are* ;f)v o:2r ol0osq 1fx*mtzxi connected as shown. With the switchvmxt2lxor*z ;0) o *s ofi1:fq 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, an ideal ammeter, a switc fahv)r xkukjzg( 2q+;(.thp1h and three resistors are connected as shown. With the switch xjh 2q)pu a r(+g(h;tvkzf.k 1open 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 righnm5v r8ek +o6 0hs0bdct, what is the equivalent resistance? Assume that all wires are ideal, the battery has no s85 c+m0hk 6do0vne brinternal 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 t t(b3gy.a4epoe8 jyt9he circuit shown to the right with res ao 8.eetj 4y9(tg3bpyistances $R_1 = 4.00Ω$ , $R_2 = 3.00Ω$ 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 coxpwd .-i50a h v lk6-5zgujwz+mbination series and parallel circuit to aax0j+hz-5g5 i .u-p6w k lzvwd 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 s yprygj97f9 :yhosy2jw22*g khows five identical resistors connected in a combination series ay2k9j 2yypjw s og :r927h*gyfnd parallel 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, all of the biy4 s,/ 7j,ik8 dyt5 me4aek4mv7yowsulbs are identical. Which bulb will be the br/my4k,w,i7ysdioee sk m t4478vj ay5ightest?


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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 idealnn( w8/dk s-po6 ag,tl ammeter, a switch and three resistors are connected as shown. Wip/a(,nd tkg slwn68 o-th 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 batt3p k, kf9/yj 5uet-tp- jp6ictery, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram the ammep3 t9 i pp,j/ tcyk5fu-6jtk-eter 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 ammeter, a switch an /0 6t,zik o)wtja0jf 2f(zwmsu zs,w6d three resistors are connected as shown. With the switch open as shown in ja0jo ,,zsfs6uw mi)0wfktz2z6/t( wthe diagram the ammeter reads 2.0 amperes.
When the switch is closed, what would be the current in the circuit?


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