A device that produces electricity by transforming chemical energy ind dk(-.,ga j iij,v(l+r8s idkto electrical energydi k,8 ,j- (dai.rd jlki+vg(s is called a

  A car battery

  The total amount of charge that passes throughx./yao8:.xd) tjc4)sr rekm d a wire's full cross section at any point per unit of time is referr) /saxd .cy)de:rjtxkr. o4m8ed to as

  The direction of conventio*bj-66-r1xfkrale 3 ox r b+djx:g fv3n current is taken to be the direction that

  A coulomb per second bj sqwtd(pi9())g 3f his the same as

  Car batteries are rat8ymf 3yy .b(u2*igivk ed in "amp-hours." This is a measure of their

  The resistance of a wire is4e 9p/ragxi0v defined as

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

  The resistance of a wire iey1+yy1mjv r .51htcrs

  The resistivity of a wire depens:nt.w8f3h/q o tk pb-cqd4n .ds on

  Which conducting material has the lowest resistivity value? 3y 6z:qnttd)a,ppinmu/)n 9r0qd h/ p

  Consider two copper wires. One has twice the leng ;. fd9tw7w+:pml jvoeth of the other. How do the resistivities of these two m lfp9d.o:t; ew7vw+ jwires compare?

  Consider two copper wires. One has twice the length oftrg3; zu-e,bxm1qeiur(kmn / 6h 5e1 u the other. How do the resistmzxu-3 g rmu1rie ee,k(1q5/;6uhbtnances of these two wires compare?

  Consider two copper wires. One has twice the cross-section lqn;gvgf*0 u1jq) *o4xy-5ify dy2 soal area of the other. How do the resistances of these two wires comp4* f;q1 oo 0gyj-)ligxn5*f2udyq svy are?

  Consider two copper wires6poj) fh 2faxs ax)2z/. One has twice the length and twice the cross-sectional area of the other. How do the resistances of these two wires compare?)o)p a/ xsa 26fxfz2jh

  The length of a wire is doubled and the radius is doubled. By whatgbzb6ue 9 6wft +y(gt4 factor does t(b96ebgw f uyttzg+64 he resistance change?

  How much more resisti18-tj; cqm5t:l yi neance does a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of;ylijn85c:i1ett -m q the same length and made of the same material?

  The resistivity of most common me/icy vwj5 f6lq.x:0wc tals

  Negative temperature coefficients of ;cgb:hw*9l- sth iii-resistivity

  What is 1 W equivalent2*:9wk( pecwyh ow5 bp0 pb;bw to?

  A kilowatt-hour is equivalenxt7ximd59y l4vuj/h + t to

  If the resistance in a constant voltage circuit is doubled, the power dissipaj + l1u,8x8lxw;)wq tt(relfs0 o1edwtedqw+08 ojwrle1d)s;utf xx1e8 (,l lwt by that circuit will

  If the voltage across a ci2sndf(sj3)lc4xyjc43.m zsylc 72 irrcuit of constant resistance is doubled, the power disscr cn2.jzyl3 7mlj 4cs2)3 f 4(xydsisipated by that circuit will

  If the resistance in a circuit with constant cucgw hk3. 3f.*, vfb2shppc d4rrrent flowing is doubled, the power dissipated by that circuit wihchc.f sdpw3*4r.gvb ,fkp23ll

  If the current flowing through a cir lp- ex -rjzz;be6f0epl7zh5- cuit of constant resistance is doubled, the power px50;zr- p7jl z-zl-ebfe6 hedissipated by that circuit will

  During a power demand, the x+nyt+)7m n hvkj 4wrt9y2+zp./xklz voltage output is reduced by 5.0%. By what percentage is then +4k2/z+hx+py t.lvr7ny) wt9 kzxmj power on a resistor affected?

  A current that is sinusoidal with respect to tim6qe cg8g)p(lue 9gbn 3e is referred to as

  Consider two copper wires each carrying a cury ht;(oqs :x5wrent of 3.0 A. One wire has twice the diam hy :x5qwts(;oeter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistihcjo)a +*qk;uvity becomes essentially zero at very low temperatures are referred to as +c)a ;*quhkjo

  What current is flowshh -kjo: nma-x-o4s8ing if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating w7 fezzl d5)nx;,p,ucapparatus in 2.0 min. What is the averpu nfz) l5 7w,;de,czxage current?

  How much charge must pass j;p3;ae* d dlwby 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 flowingai5rg;r.2ay3 n08mfr iq 5bcl if $4.0 \times 10^{16} \; electrons$ 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 uwqn 4 cfx0-6rA of current, has been left on for 10 min. What is the net number of electrons that hnfcx qw6u- r40ave passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mgyjlhipt6*+m5q kmw c12 5(szw of silver on 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 m t6wlwc hy51mqki( +jp52*szsilver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow) pb9vl(qok akdx4s 3wkrzw. :*7hml , through a resistance of 3kmlz l3w*kx 4)b: r,aq(h k9p dw.v7so30 W?

  What is the voltage across a 5.0-W resistor if the current through it is 5.0 A:b yqox42e (q mzj.r,ex(n3b. mat2do?

  A 4000-W resistor is connected across 220 V. What di/m mhyar;9+ +efa/ ycurrent will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistan9o )bba2ag7h mqj.a8n ce?2a o7.mb gjha) bn8aq9

  A 12-V battery is connected to a 100-W resistor. How many electgi,5s vy t(m;/slgd e0rons flow through the wi t/,ds0 g;(ygvim sl5ere in
1.0 min?

  What is the resistance of 1.0 m copprkrv)4 -sz4wv /zr, f3c8dtjo.t;twmer wire of diameter 0.40 inch? (The resistivityr4/ 4vc)zm;8wk t-dv,jws 3tf .z otrr of copper 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 long, ifmosbjbf 4z(aja i eywj2j2s3;,2 e.0k the resistivity is 4j(y2 ,eswsjj .jb;k2 im eoa02b3za f$1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resist9h )nh 0ly6lnioi5y:fivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistiviju4 w4 hni;0fwty $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4udygoa */ 8k5gv 6,ijoer(4ej.0 m long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22zq tp4sav s,x9o ov;)* gauge (the radius is 0.321 mm) nichrome wire if it is p tsvzvs9x*o)a4;oq,connected 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 dz w pk7 zqrv*-h34-ldlong and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (Thek q- 34d*rwzvpdz7l h- resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wv*h gbax5uh+:ire 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 coppergj6+d/ tk z0fuomn5dw;s6 ow8bcw-, x wire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a ;d0tqx76k h 2x hrae7aresistance 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 n7c ajfi 31md*+ys/r.w4 qtv mplatinum 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 thmhst+/( jc :yhvi dd24e melting point of indium. The resistance of the platinum wire isy/m :ij4d2hhc +td(v s $2.000 \; \Omega$ 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 throatmv (x12rbyhu g ak8 5l:0.ybugh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1 w/ .hgm35dpyiuo hud/9qc:w 1200 W. What current will it draw?

  A 150-W light bulb running on 11bu.3ts8 a*jkl9 x5z xl0 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used ipljk1++) m jzi 6a is+5h)uugqn a 12pug)h+a+zi6k )sj5i1 ju +qm l0-V circuit?

  A toaster is rated 800 W at 120 V. What is the resistav1;,ohtw) rwnlqyk+dwj, p v *.5cayam 5j72fnce of its heating element?),5y;j rncv,v f p7*wajhl25+wqoay .mdw1tk

  A 200-W resistor is rat)l)h(spgp,crk0c2 x red at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated athb1no 4u(3 be g:wyxt+ $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current doesjgl2j 3tf:vw (v73hof it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V-lmn;3em +x om, what is its resistance?

  A 25-W soldering iron runs on 110 V. Whiq:v0f s:e(k54ragfq /)q:qgd en -o ehhy.e3at is its resistance?

  How much does it cost to operate a 25-W solctc. va3b-el/ obb(;u dering iron for 8.0 hours, if energy ;lbu/v bac3.c e (-botcosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hours?4zrdl 4 45ac(45sh:gq roshnmtj+ i3s

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much fsc e r0pe3prq1hx4 *2heat energy is produ*sef0 chprpr 31e4xq2 ced?

  A battery is rated at 12 V and 160 A-h. How much energy doe wqlt0 l..9bmgs the battery store? bt.lm.09wgq l

  How much energy does a 25-W solderiq25n6spk: rxn x;-bi7 s/lks yng iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power company - dfbhk89jbl1qaj v 8:charges 10 cents for each kilowatt-hour of electricity used, estimate the annu 8j:qa8fb bd-9h1vkljal cost to operate the bulb.

  A 400-W computer (computer plus monitor)d5nknodhbshx0 va*5*(z3c +o is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to 5*d 305 hhdznncxb+ vk(osa*o run the computer annually?

  The monthly (30 days) electric bill included the cl3+u r mun6jgn k+faldm;t ))0ost of running a central air-co rjnm)da0u+g+nfl 6 lu)mtk3; nditioning 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 kWh?

  The heating element in an electric drier operatel4w(xs5v*cy p4vyje:s on 240 V and generates heat at the rate of 2s l*vcxv ew:5j44py(y .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 element?

  14 A of current flowpendi/w)jsw (et 5; 0fs through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costow eq2k fps/ ye3l1c(6s $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% efficiency. How much cur8a )czb sl4+( 4goukiprent does it draw from a 120-V line? uackpls8 zb(i) o4+g4 ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac powert+cyb7e oy;9w source. What rms current flows through te 9cw7yt o+;byhis device?

  A 500-W device is connected to a m fh9v+4rb 6a otvek79120-V ac power source. What peak current flows through 9 krh+4em7fo v69ta bvthis device?

  A 500-W device is connected to a 120-V ac power source. What is the peak voo paj07f0h yusc-/ zfz *3pxyks97m 2gltage across this jc0g p- zh7m*kx /72a9zoyf3fs 0syp udevice?

  The diameter of a copperz9(ymnn*) qyl wire is 0.081 inch. The maximum safe 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? (Th z 9)lyqnm(ny*e number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)