A device that produces electricity by transforming chc bugn(x 4fla9*v2*+ .ooduehemical energy into electrical energy is co*x+c bahu24e .d* vongu (fl9alled a

  A car battery

  The total amount of chara6 glo2 cfu 3m.uw-j rs4t3o*uge that passes through a wire's full cross section at any point uuf 2g6. m*r 4ou cjw3stoa-3lper unit of time is referred to as

  The direction of convention current is taken 9 koxiu htmz88)-w/ uc3(2sss n3ioifto be the direction that

  A coulomb per second is thekhe+2* xv rqw/ same as

  Car batteries are rated in "amp-hours." This is a measure of the/vft d n4tgd0c8ae*/*mkvpne; id: 8xir

  The resistance of a wire is defined n6nb + eaxb;2 d;h*+ivpgq e5ras

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

  The resistance of a wp (b2at6t0f* zmhk xa)ire is

  The resistivity of a w1a c 2nms3n67c/wf lw ,usrfm*ire depends on

  Which conducting material has the lowest resistivity value9 xed 3,r3r py.sw-kmf?

  Consider two copper wires. One has twice the length of the other. How,df/y+7+od njfa/.hm w9vv :mik2 jv n do the resistivities aji v2 jmo 9/,+v7+dwfdh km:nnf/ y.vof these two wires compare?

  Consider two copper wires. One has twice the length of thrfc +og-iexd xv 38.r 24d0gjze other. How do the resistances of these two wires cox-.r4 dg dz2ri3xf oegv08j+cmpare?

  Consider two copper wi*wyhf xs9s rrd6 65pd.res. One has twice the cross-sectional area of the other. How do the re r9x66 dwfy.srh *5psdsistances of these two wires compare?

  Consider two copper wires. One hav+slc c;s /n(ts twice the length and twice the cross-sectional area n(lctsvc;s/+of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the rggo (mg7 bj(a7e.)yx7 ,o1 x.sxmhbudadius is doubled. By what factor does the resistance 7(h,.m. bsxgo 7(1ba)yx7od x g uegjmchange?

  How much more resistance does a 1.0 cm diameter rod have compare o 2g69lu8 +5fgj fkzy2h b*9j5,mqnnqmdtw 2td to a 2.0 cm diameter rod of tzq5qgfmuw +mn2h ,5j*dt2nfy k 8996o ljt2bghe same length and made of the same material?

  The resistivity of m*dmcwk:i /pe 1 lem.tj2vbo+ 8ost common metals

  Negative temperature coev;wf 0mmk98sib;e ,fbom1; qtz+b rt .fficients of resistivity

  What is 1 W equivalen*iao2y9jg4jr t to?

  A kilowatt-hour is equivalent t60+ n8(ocyu l4dl dklko

  If the resistance in a cowij*pa p+e(:mnstant voltage circuit is doubled, the power dissipated by that cirpj: *(i+we apmcuit will

  If the voltage across mmg5i7 k8+*mw c.xixs: jahe9oh +x4c6)mtvoa circuit of constant resistance is doubled, the power dissipated by that circuit wi)wh .*+i:ice vmc jmstm9koa+xx4og68m7xh5ll

  If the resistance in a circuit with constanb2uttg q83.b ff3)l6; topvjwt current flowing is doubled, the power dissipbfqg3 32 u .)wolt8vp6tfjbt;ated by that circuit will

  If the current flowing through a circuit of constant ry-;vz,5dl 5aufrcdc(p tj(j 0f (ev9t esistance is doubled, the power dissipated by that circuit wil((jtf5z9(vdf;lrcdajpt ev-c, 5uy0 l

  During a power demand, the voltage output is reduced by 5.0%. By what percenudpj*3w*0b,ee1 i1m vvhez d*tage is the powe*debmp*,v0d1v3wi* e 1 j zuehr on a resistor affected?

  A current that is sin* p *tjr4rdv8 4ndlb13h8 lhsousoidal with respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has tw/c v6z8zb09bgt r l.)j3is fi.dn ,wblice the diameter of the other. The ratio of the dv,/bzc3 .)b9 wfn tl 8ib dz0l6r.sgijrift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially z pk mb;y4;hke0n6kl f misgh5:3v1z( oero at very low temperatures are referred t:pn kz 6i;yse;k3fg h 0lb5mm( 1vho4ko as

  What current is flowing if 0.67 C of charge pass a point in 0hwwlkn;y 3 7jgl6/pc :.30 s?

  A charge of 12 C passes through ang * sd2jomkm7gswbl-/i evahd 4+3 w6* electroplating apparatus in 2.0 min. What is the average current*-wa ok6ss/w v h+b mg2*dm4ligje 3d7?

  How much charge must pass ;qr+f i+r6mvaj .7ynnby a point in 10 s for the current 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 )vp)env4an8 c-,: yhe6 3hdis.jgy:iu e9l q j$4.0 \times 10^{16} \; electrons$ 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 ocn ni(eo13:ir f current, has been left on for 10 min. What is the net number of electrons that have passed throunin ei1r(:3cogh the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on b+aq/h8k2bn7 i-e-,bwpe wf t a metal part by using a current of 2.0 A. How long must the current be allowed to run to deposit this much silver? (The silver ions are singly cqe-befpwban82i ,k/b+-t7 hw harged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4. thue6ye3qw)y4f;fwsn*h6j/xcs 1-c00 A to flow through a resistance of 330 W?e31y/6hes)hfc fy-cq4 n*jww t;6 u xs

  What is the voltage across a 5.0-W resistor if the current through 6 pq2hqk,+,bq3 jmae*gnhtq( it is 5.0 A?

  A 4000-W resistor is cmq 5uc) jrq5y fqgnt )7gt1;:jonnected across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of currenjgni0zrgo y 98.:nq ,kt. What is its resistance:rikzg0 8qjn,9 no gy.?

  A 12-V battery is connes-daxb/x km ;,b )ukr+g b-nj3cted to a 100-W resistor. How many electrons flow through the n 3k-s/k r+)bg-bjab; x,udxmwire in
1.0 min?

  What is the resistance of 1.0 m copper wire o+e8aazx1-gh af diameter 0.40 inch? (The resistivityah - xeg+a18za of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance h)b2qy.p e4rw of a circular rod 1.0 cm in diameter and 45 m long, if the reeqh4y) wp2b.r sistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of coppem 6b;j3,r*ep clkjt +ur wire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivit7wixa0 3onhhp( wax -/y $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m l cftlp9(q5- jyong, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm) iw( js 45c00zfaodxn, nichrome wire if it is connected to a 1 jzwis4 ax0 f5o0(dnc,2.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cmz-vk 5beig.h6 long and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its5he.k gzbi6v - length when it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0.50 mmj )xd8r3tie0s79f muj 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 (resislld68ynf;p nk3+k5 j ytivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has i)q wzq bp3q2r:-d1d fa 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 o0 dfef/j r w3yqrv70e9f resistivity of platinum 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 the melting point of inm:1zkhl td/3udium. The resistance of the platinum wire is 1 mt3:dlk/ zhu$2.000 \; \Omega$ 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 thro7svan+2 b+rxjr(* czjg 0+arough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will itfbu i+p-xt7ad3s) ;p 9 nmrk(u draw?

  A 150-W light bulb running on 110 V draws how much current?9qxy*y8;j8a ;*wl q-twx s cpq

  What is the nominal resistance of a 100-W light bulb designed xi4;*ub 1yfas3qm kgn.i, 6zvto be used in a 120-V 6ngkb ax4.ymvsiq31if ; ,*u zcircuit?

  A toaster is rated 800 W at 120 V. What is the resistance j,8 ir8byz/qfof its heating elemenq 8jb ,iz/8yrft?

  A 200-W resistor is rate lau *58ihl9moh 2d/-jwc5jpspc eq-*d at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ra pqz;qqh: 1j7d9o1lkrted at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V,n)bapz(iu9f1)dj)kq;hzq l 6 what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its re,iomeux19*qw sistance?

  A 25-W soldering iron runs on 110 V. What is its resistancejj0xne8rkxp 6 pw1 f ,wbq70-c?

  How much does it cost to operate a u8xb p/;m gq)p9 f/e2c,ohmr w25-W soldering iron for 8.0 hours, if energy cos;/wex9/up )hmb8,2pc rog fmqts $0.08/kWh?

  How much energy does a 1kyrja16+h eqi q8hx19tu-1x-stt z4 e00-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much k ;zd i3tdtpnex*uq :y*:o,+fheat energd;tuo+q:xpy:, kt diz* ef *3ny is produced?

  A battery is rated at 12 V and 160 A-h. How much 5chbc95- g6fvf vory:energy does the battery store?gh6b 5o95v: vrc fcyf-

  How much energy does a 25-W soldering iron use in 8.0 hours?gajoev 564oss, 1 a(g0fm0 yne

  A 100-W driveway light bulb is on 10 hours 4 q8-a1putyasjcti, 0 per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate ttt jc,4p 1qa0-i8u ysahe bulb.

  A 400-W computer (computer plus monitor) is turned q9eq4y, i j-znon 8.0 hours per day. If electricity costs 10 cents per kWh, how much does iqqz9-ej n,y 4it cost to run the computer annually?

  The monthly (30 days) electric bill includ 3c yh 61riqgr)))jg oxkl48z uk5z/fked 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 items contribute to the cost of the monthly electric bill if electricity costs 8.0 cents per i)j/ gluo6xyfz k8 )k4hcr q13zkr5g)kWh?

  The heating element in an electric drier operates on 240 V and genq;2wdox qil4. erates heat at the rate of 2.1 kW. The heating element s24q ;wx.idqlohorts 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 element?

  14 A of current flows throu0l(l rpdu q:2x gn(id)gh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost ;a3d ijuds:r8a-3ozxs $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 atjr +9jn vuhobfsjwa9-,,1c eh0 0io4p the rate of 2.0 hp has 60% efficiency. How much current dcp b0n jehiujf4+w0rsa, ho- 1,jv99ooes it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. Wdy(bn y9x -of1*tvi4khat rms current flows through th-dbi(f9*t onk1 yvx4yis device?

  A 500-W device is connected to a 120-V ac powi1 su4u xea9w0er source. What peak current flows tesaxu 490iu1 whrough this device?

  A 500-W device is connected to a 120-V ac power sob h 8r- eakp9181daamnurce. What is the peak voltage9 k aehn8 m-p118ardab across this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current ifv old 04ij918 ld*llyt 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 carriers in one cubic centimeter of copper isi4 *f1l0jlly 9o d8ldv $8.5 \times 10^{22}$.)