A device that produces electricity by transformihc2uwy7()yqy8 e v,j sng chemical energy into electrical energy is calle8vce 7 ,q hyywu)(syj2d a

  A car battery

  The total amount of charge that passes thr,kr r .j qz5vtm)uqpuk;)(a-oough a wire's full cross section at any point per unit of tu 5o(r j;kq-,z)a. k vpqtrm)uime is referred to as

  The direction of conventior 5n*b9qh1o:: f d2lua3zwlz ln current is taken to be the direction that

  A coulomb per second is the *5cxdci9cai 4l6m+0 4cda wswsame as

  Car batteries are ratedee1k fldq-2 1u in "amp-hours." This is a measure of their

  The resistance of a wi0ove 4q96 8ju h/*lx)finfbes d):gy vre is defined as

  What is $1 \; \Omega$ equivalent to?

  The resistance of a wic 8byucs* *k t:vd(2, hr.owcure is

  The resistivity of a wire depends on7rx833vw17;s cxbuk jd( hrjoif+(*;wqtt vz

  Which conducting material hasku ;8 gm9mp0gx the lowest resistivity value?

  Consider two copper wires. One has twice the length of the other. How do q-hlzyhms)ijwp(+uy -(8 d*o the resistivities o )hu(y j*8dhz oiw-ms-q(y p+lf these two wires compare?

  Consider two copper wires. One has tw;1 csk(ex .yvrluy*,lice the length of the other. How do the reekryl;(vl .c*x1y, susistances of these two wires compare?

  Consider two copper wires. One has twice the cross-secti: xe -5a7cgbmwonal area of the other. How do the resistances of these twgm eb-cwx5:7 ao wires compare?

  Consider two copper wires. Omq f;tsw.*65dbb e f8w20pfzyne has twice the length and twice the cross-sectional area of the other. How do the resistances of these two wirbp0fwf5 det;.*z2 s8 wm6 yfbqes compare?

  The length of a wire is dou5h+w lb q8j),8m5w/ pxhupnkfbled and the radius is doubled. By what factor does the resistanc,/x +pb5p n8)lwuhkw5 q h8jfme change?

  How much more resistance does a 1.0 cm diameter rod 0 p43l;kyitadq qa,-v have compared to a 2.0 cm diameter rod of the same l v; tp0ala-i,kdy q43qength and made of the same material?

  The resistivity of most common meta(et kkjc+chf 1n(73iils

  Negative temperature coefficientsol/j6) i prr5d1er : vj6.zamu of resistivity

  What is 1 W equivalent7v b -objg 91 +ms;mxex.uio,w0iv +fn to?

  A kilowatt-hour is equivalent toi9(0texwb eigl6 7xibll+cu*p- 7jo6

  If the resistance in a constant voltage circuit is deqk 26nx*2( 2z a7nhxtzt ntm+oubled, the power dissipated by kzt6e+ 2tnxxh*2 a(2q zt7nnmthat circuit will

  If the voltage across a cir4o v9jnmg7urp m 71le7cuit of constant resistance is doubled, the power dissipated by that cimr n91u v om7e7g7jpl4rcuit will

  If the resistance in a circuit with constant current flowing is doubled, the p4rrm-9+ eso xjowro 9j+- xr4semer dissipated by that circuit will

  If the current flowing through a circuit of constn c ,3vwzba4s 1(ijoaq f1r272hpon5tant resistance is doubled, the power dissipated by that circuawa7o 1 pb v jh32,zf c1trsq52nno(4iit will

  During a power demand, the voltage output4go -t3.ngiy * agzwqxn +2t,r is reduced by 5.0%. By what percentage is the power on a resistor+*t3w.g 2oqt g4ax -nzg,ir yn affected?

  A current that is sinusoidwad89 xuw-7kt+ m2bc wal with respect to time is referred to as

  Consider two copper wires each carrying k 3)q2o8hk0 ehgui4vf a current of 3.0 A. One wire has twice the diameter of the other. The ratig)ko8i2 vh0f3h qe uk4o of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at verywo o)mz/f5f;:zdzi;cj z. z:q low temperatures are; oiom/:fcq:d.zz 5wz jz );fz referred to as

  What current is flowing if 0.67 C of urj35vh epic63w k8*ccharge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplatinu4: z:lkjl:b/-(tp y4 n,ulpd jkv ,ixg apparatus in 2.0 min. What is the averagjzu-xpni:lt l,yd /4vk(:l:pk 4bu,je current?

  How much charge must pass by a point in 10 s for the cu.q71v3 a0 ev p-imcfxirrent to be 0.50 A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowing if zn34h tb*;yba $4.0 \times 10^{16} \; electrons$ pass a point in 0.50 s?

  If $3.0 \times 10^{15} \; electrons$ flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current in the wire?

  A coffee maker, which draws 13.5 A of current, has been left6h.2a2s scht*f5i qzp on for 10 min. What is the net number of electrons that have passed through the coffee maker. qch56*at2f2 spiz hs?

  In an electroplating process, it is desired to b hxu7(nccsih.6h zb;1(dmktd8w k/.deposit 40 mg of silver on a metal part by using a current of 2.0 A.6wk (. 81;z7hhci (.n cbd/hxbksmdtu How long must the current be allowed to run to deposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is require-uw3 xv:t;kh*j fjzc *d to cause 4.00 A to flow through a resistancejhv u c*;f:t3 z-j*kwx of 330 W?

  What is the voltage i6/j9 igp e,(;-ic0 irwd/4bs aebkw xacross a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected acrdn))c vb6 iw,coss 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of ch08sge 3qpf:9sh1( pqwg f c7purrent. What is its resistance? whsh3 sgq10g8 (f: ecp7qfpp9

  A 12-V battery is connected to a 100-W r:x 73qe.qxy miesistor. How many electrons flow through the xix m3:qye.7q wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The zc9 rdjrjua;29i5 lz+ resistivity of corj5 +uazzc ;dr9li9j2pper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long86 ht b/ts1vuc1/2t 3alqv oge, if the resis3ecahv2 ts1ttb/qvuo/ l 8g61tivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivitv; u/ymcis/c-iau:bwgqlx 7pc07o* -y $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resis ejdg/m*+1ed2i4- y+2kizkaqvsom 9mtivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, ug 3 pqk:h +1mnrbr4gqhe9 c(m f;z*)mmeasures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0t):f :j rcn,lx.321 mm) nichrome wire if it is con, nt:l j)cr:xfnected to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangulyn6* gfk- q0l ba2pd.rar cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carfn g-k0qlb2*r6. ayd pries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nich5/-g2 ky1sgz yqk rk0cgst. :hrome wire has a radius of 0.50 mm and a resistivity of $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper wire (resistivituk.6 t)ei i mjjvk .6oo9-eic/y $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor ha ry)vm5,y u-ucs a resistance of $18 \Omega$ at a temperature of $20 ^{\circ}C$. What is its resistance at a temperature of $120 ^{\circ}C$? (The temperature coefficient of resistivity for carbon is $-5.0 \times 10^{-4} /^{\circ}C$.)

  The temperature coefficient of resistivity of plati;am3 v0rtl zh7num is $3.9 \times 10^{-3} /^{\circ}C$. If a platinum wire has a resistance of R at room temperature ($23 ^{\circ}C$), to what temperature must it be heated in order to double its resistance to 2R?

  A platinum wire is used to determine x tm4res6hw.:ayfq 11 the melting point of indium. The resistance of the platinum wire yrs 1fa wx1t4m6eqh:.is $2.000 \; \Omega$ at $20 ^{\circ}C$ and increases to $3.072 \; \Omega$ as indium starts to melt. What is the melting point of indium? (The temperature coefficient of resistivity for platinum is $3.9 \times 10^{-3} /^{\circ}C$.)

  5.00 A is flowing through an v dorq;7xan: 4mws- r5$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W r/-h,r1 ssis-leiu+ o; 8yl+tl.mhlg . What current will it draw?

  A 150-W light bulb running oc-my 6rkb u zpib0))b.n 110 V draws how much current?

  What is the nominal resisi:3l1z m +xe efipl1)stance of a 100-W light bulb designed to be used in a 120-V circuit1fe+i 3ixzlpm:e)l 1s?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating elejhf2bp*rod2ff 15o 4zmenz*f fprf 22bjdo45o1ht?

  A 200-W resistor is /0zv; ,smn)thr:xeqq rated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated at yxm2+hv t.t 6fzod(0bt k-j*m$1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, whauknaq1exs 0 /aq 8az-6t current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resistanceqzn+mb*x g (na:s2*lo?

  A 25-W soldering iron r8+ e.de1ib,eauope;-x n fd5tuns on 110 V. What is its resistance?

  How much does it cost to c4j5znldw0i vlon o8m )x9*,toperate a 25-W soldering iron for 8.0 hours, if energy costn8i*4) 0d9jl on,wov5tlxmcz s $0.08/kWh?

  How much energy does a 100-W light bu2r7;cbumon:wvr(y y 6lb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0-g /s c7a .bn8alut,pqxr sm). hours. How much heat energy is prc.bm-px,nq sa 7t lg8)us/ r.aoduced?

  A battery is rated at 12 V and 160 A-h. How muci a9u6c. ur )xcazz32qh energy does the battery store?9 aq62u3u c)zc.ira xz

  How much energy does a 25-W soldering iron uscaj 9i2t 297cjnvjs+ge in 8.0 hours?

  A 100-W driveway light bulb is ondjl vn91f1c5 p 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost np fj9l1v5dc1to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 houi2f n7 zjenw591upn p/rs per day. If electricity cpeuiz jf1 /95w2pn7nnosts 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days).kku64h.xlxzytzato 5rze n1. n:h ;( electric bill included the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W light bulbs for 5.0 hr/day. How much did these itx 1ak.uh r4.ozt hn(x.6ne lk5tz;y:zems contribute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates oe0j)f7tssdm c 0 k1xs13y2 sz dhxk+. qg1uef,n 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nichrome wire by 10%. (Assume the temperature is unchanged. In reality, the resistivity of the wire will depend on its temperature.) What effect will the repair have on the power dissipated in the heating elemekj)t11ss+, e. x gs12y3mc0dks0 feuzxh7f dq nt?

  14 A of current flows throug* 2bza0, 3m5u-hp lw khdssp6nh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs 8fwea32 w/jqm p+rhr 1ey2nx)$1.49, and will run a portable CD player for 6.0 hours. Suppose the battery supplies a current of 25 mA to the player. What is the cost of energy in dollars per kWh?

  A motor that can do work at the rate of 2.0 hp has 60% eff/dinz *tf *+c x9du8jgiciency. How much current does it draw from a 120-V *+d 9n*gf8 iutdc/ jzxline? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac po,k77-6 fibxtfp mglz.wer source. What rms current flows throug7 f l.,6ftz 7g-pkixmbh this device?

  A 500-W device is connectedf.cf j:8 4n*kgd5n1bfxmk mc9 to a 120-V ac power source. What peak current flowsm8 mjbnfdxf: 91c*f4. k g5nck through this device?

  A 500-W device is connected to a 120-V ac power source. Whatk(d m1q uzq q6vq65 0eseh+s+ torc;-p is the peak voltagcq1 +prm;vess 5eoqhdq u0k +6-zq6t (e across this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe /bl4x)njvn m2s r k/5/l+po*wqxt8. b coxit/current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number of electron carritm*//8k . 4j)+nxx/lw o /25qbbvrpox sinclters in one cubic centimeter of copper is $8.5 \times 10^{22}$.)