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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 met z,n)tkr8ky)p al resistor connected to the battert,k)z p )y8knry. 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 pacbd ;szsvx+em/* ac by(7*x 6drallel, the_________each resistor is s*z67s+cy/a ;ex(d bvbcdm *x 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 throug50dm wid4 ipim/eja+2r -o vk;h the thin filament wire of a lightbulb causes the filament to bew+m4dk 2-ji0 re5 d; /iampoivcome white hot, while 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 s45no q ntdl7feh6 c/-with LEDs. LED is the acronym for which on/l6-no 5 7n cdsthfqe4e 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-sectiojvbkav*8v73o5z hn 6inal 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 resistivity to the old resistivity of 5vjvb37v8kno6iahz* 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 3u7-,2*aa 2,ldp9j+goz bcr dazcnb oII has twice the diameter andar2-cd 3p2*u b7a ,bzdazn 9jo ,gloc+ 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 but has twixm 5fd:r 2knna)x4vlwyjz1s4 5iw 0u6 ce the diameter and half the length of wire X. If wire X has a resistance of R then wire Y would have a re 6 u)w5av4: drnx0ifj12s4xw5lmnkyzsistance 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(udy dm1yv a7k ,s,3/wjsjtk; and radius r. This piece of material is then drawn so that it is a cylinder with new length 2L. What happens to j y;kayj1sd/vu 37dtm,,s k(wthe 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 Ediso)nm8pd ykj2up* dni+*n wants to make a brighter light bulb. He decides to j*ki2ypdun) d+ n8m* pmodify the filament. How should the filament of a lightbulb be modified in order to 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 same material. Thtnubl-1u-)/ o-kx i m+ +dlclhe length and radius of each resistor ihniku+- m-l1od /- xt l+cu)lbs:
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 ovk g6q z2ebo9v 3q:qn,f resistance 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 ofqenkv3b2 :,6 qvzqo9 g three 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 accomzt e/9tua my(7u) -xcdpanying circuit diagram has internal resistance 10.0 kW and the ammeter has internal resistance x9ct tuedu7ma(y) /z-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 ts3-n+no flpla(1cjx)l0 a fx3 o the right. The three bulbs 1, 2, and 3 - represented as resistors in the diagr + 3n 0j -afa)llc3xonpx(s1flam
- 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 circuzz6pv6 zvh x39it at the right. If the current in all three rez vxzv36h9 zp6sistors 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 electnhnv1rp( ;pn;4ffq /c ric circuit composed of 5 identical light bulbs and 2 flashlpq(4n;;nh/ p nf1cvrf ight 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 thebqm)5 bahz2r 3-duk.h simple circuit shown where resistors R1, R2 and R3 are have23 qm)5bz-hadb.urk h 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 seriesap ;4g,bjd:rv to a battery. Bulb 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 choicvjgp4r d;b,a :es 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 identified re1 ;9wds 9smnyysistor in 5 seconds once the circuit wad w99my ssny;1s 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 irf f-h nk8j9d:n the following simple circuit have the same resistance, which would dissipate the greatest powerdf9 k8 hrfn-j:?


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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 accompa 9ck r so:zb4a/acr-/znying circuit diagram, the current through the 6.0 Ω resis aack r4:bzr//z9s co-tor is 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 tol c*9cz0w2gl88buz vl a battery. Suppose R1 carrie2zb lcvlw 80lu*g9c8zs 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 r,p9 :jid-acr :x)r49jb xkt rbesistors R1, R2 andR3 are connected in parallel to a battery. Suppose R1 has 2V across it, R2 = 4Ω, and R3 dissipates 6 W. Whaxak:d: jbr rpj9, itcx- )94rbt 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 u tu o-/9mr9e5vkxy+ i1200 watts and 120 volts. What is the maximum v/e99tu ik o -5ruvmx+yalue 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 ligb2yn lh(ihz r4syh *r8x(8mr:htbulb designed to operate at 120 vozby4h(rr rs28 :y*(hxm hn8lilts?

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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 is dissipatingv1ar;qs 2 64sv;j8sjf7eccqx 36 watts of pocq18v 2ae;sq4v6 s 7src;xfj jwer?

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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,4 mfngw 6i::wa 600 watt.” In nor6wf gma :w4n:imal use, 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 kgu4wj 5jpp9 wx+9lf; a circuit containing only three9 4fxjgkpplw+jw9;u 5 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 ret2n 0,fcdi;dty p*(xv34sb ycsistors. Which of the following equivalent resistances CANNOT be p4d 0d;ptxf3ytys2c c, (vn bi*roduced 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 didt9sti 03p;w(or+y* onp m1 btfferent values can be connected together in different configurations. If all three resistors are used in a circuit, how many dif t(wt+ 3opnp*sdi mytb1r0o; 9ferent 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 connected to a battery, a total power P isvvl 41b7chy i;00c*l.lfm bep dissipated in the circuit. How much to 1bl l4fv0l7m*y0c; piebvhc. tal 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 resielr1hk;ys k*r *)qvm 2stors, having resistance R1 and R2, are connected in parallel, tre1 *; k )yqvkm2lrh*she equivalent 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 a resistance of 1vp3dp lse 7e ;h3v(*db2Ω when operating at 120 volts. What is the minimum amount of time that it would td3ebsh(3v;dp l7p *e vake 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 resistoompt gzs**fnhn6*8v7 r that is dissipating 36 wat6g 8vt*n*s*p7no zfhmts 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 dpi. ; t0d3npppraws 13 amperes of current when connected to 120 volts. If the price of elen0pd3; tpip .pctricity 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 keep a 100W lightbulb lit cony4h+l -en2: l2bptdmw ybgkg cjf nuue5. (25(tinuousl(n -nh4duyufe2k.5 g e tbl5(2byc2 pgj: +mwly for 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 power of 2d g :1op.6ivv5 ldc7vg4.0 W associated with the bugdol17d . iv5vcv6p g:lb. 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 owns1rv8xhg. k 8ot a computer rated at 500 watts in a 120 V circuit. If alro.tgk8 8hxv1l computers 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 four resistors to form a simple cs1uwpg7tp7:dd )qx* v v65d kbircuit d5 bsgqt7v x*)v:dpuw6kp7d 1as 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 connected to four resistors to form a simplz049d*suj t, zw ff9hae circuit as showa 4dzu9*hs,0tfj wf9z n 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 ammeter, a switch and three resistors are cooh 18lmve x 4brm8rq )(nhiq/4jz2 3hcnnected as shown. With the switci(48xj1n hhm83 mrzq v)/ehbqlor2c4 h 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 battert*(y sy j*6jmka4-leqz hn4(ky, an ideal ammeter, a switch and three resistors are connected as shown. With the switch open as shown in the diagram t- 4ysaetkzj q*mh( *(6jylnk4he 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 three resistor u/ s*. qys)-kvmgwl. f4pyw1bs are connected as shown. With the switch open as shown in the diagryy)kpl1w q /ws.4vbugs-.mf* am 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 circuiwtr1ztl : 2no7t shown to the right, what is the equivalent resistance? Assume that all wires are :o17nr tzwlt2ideal, the battery has no 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 showsj 6t pzx:ar 8nghm/.myq m:55n to the right with resista 8yx.h/m jmt6rzs:gmnap5 5q: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 be*t0 fywx;jp8yilk- ;glow shows five identical resistors connected in a combinatiojp xi tw;-8lgyykf0* ;n series and parallel circuit 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 resistoxk4fl(u9pw7p h/)t axrs connected in a combination series and parallel circuu7l/9p)txw 4pa xhf(k it 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, allp5k: r07ml5xehsfh e) of the bulbs are identical. Which bulb will be the bri )x:h lpfee0h mk75rs5ghtest?


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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 a. :dlbg1bjl/zed9es3 x1 p5fend three resistors are connected as shown. With the switch open as shown in the diagram the ammdsb5ll1x3 1e:jbpe /e g.fzd 9eter 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 thresj( p1v-(yegre resistors are connected as shown. With the switch open as shown i-vpgser jy (1(n 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, an r ie4yix 5-1sj 7qrp6ql 7sjz1kd66nuideal ammeter, a switch and three resistors are connected as shown. With the switch open as shoj 1zi6-51s pn7xkidlrsy 7qq u6jr4e6wn 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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