A device that produces electricity by transfo s mqt;r pg)iwqo ql:0v,7djrmdt;vx :*:f b7;rming chemical energy into electrical enes7 dtrjp*v;, ;i bg:xmlr;7v fmqqdo q: tw:)0rgy is called a

  A car battery

  The total amount of charge thy3deg8z0* ij2txc t 4uat passes through a wire's full cross section at any point per unit of ti*eyuj3ic0dg tzt2 x4 8me is referred to as

  The direction of convention current is taken to be thehi9.mgduqa0di5 9/gk sv q-*d drgx lz36 .2se direction that

  A coulomb per second is the samsfju74 *;u i3m y*jyhae as

  Car batteries are rated in "amp b(c(am*y f2i)vfwy.m-hours." This is a measure of their

  The resistance of a wire is d9zp4slwy ew0d /8ww yyu : qwwg:pf0:4efined as

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

  The resistance of a wirl-ifx zhcx65.g h2i 3be is

  The resistivity of a wire depends p.)a1ow-;b b6hxerlfon

  Which conducting material has the d. 5ygwvqt(2-2 kwv;k zc 6yxfel*1dalowest resistivity value?

  Consider two copper wires. One fck0 8h8v*uzz0o7 y:k - rp:f )dwy-wzo*xww ihas twice the length of the other. How do the resistivities of these two wires)fo x z:rudw*y- po -kh7ivfw00:cz*8kwz y8 w compare?

  Consider two copper wires. Ob hedpxa( -y9ura/0)x ne has twice the length of the other. How do the resistances of )xbyh 0arpx-a 9/due(these two wires compare?

  Consider two copper wires. One has twice th c3cx y v(j0k.gcr.tl1e cross-sectional area of the other. How do the resistances 0c k(jt3cygv. xl1.crof these two wires compare?

  Consider two copper wires. One has twice the lengt r4pn)zn3)rlt h and twice the cross-sectional area4rzrl tpn)3)n of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. Bjct5; m6 ,.z+vxisn1 1fvifsr y what factor does the resistance change?11z,+ v;c 6f5sfxi mvrtjnis.

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cg+z -fo+l/ n qutg9hz3m diameter rod of the same length and made of the sangf+39g/+ tzu olh -zqme material?

  The resistivity of mzp)g27 7fjexnost common metals

  Negative temperature coefficients o cb.c 5okjfbgur3 h3+x8tuy1 4f resistivity

  What is 1 W equivaleg; 03 fjxkxsb97yey:vmci k;vk74(bznt to?

  A kilowatt-hour is equivalbbbc k ,)s(y4mac gan0-fdc6-ent to

  If the resistance in a constant vol pyra3z5.m0oqtage circuit is doubled, the power dissipated by that pm.0a5q3oyzr circuit will

  If the voltage across a circuit of constant resistance is doublejs8 ch /dg 6o)1al.umc. nk5zsd, the power dissipated by that 8ndhso. aug k5z)s1.m/l6 cjccircuit will

  If the resistance in a circuit with constant curr o7q/d j/y6mdxf; fw:went flowing is doubled, the power dissipf//:w6f ;ox y jdmq7wdated by that circuit will

  If the current flowing through a circuit /qasn .j 2b5yz/6d ehwof constant resistance is doubled, the power dissipated by t5/q2bz.j dseh y6/awnhat circuit will

  During a power demand, the voltage output is reduced by 5.0%. By wv j*:en wrec+-:x9eqchat percentage is the power on a r je:xeq+9*-vn cewrc:esistor affected?

  A current that is sinusoidal with respect to time h3 1a;0lztyh0crazlyn5p +ot8c2 p c1 is referred to as

  Consider two copper wires each ck)3jfgt1*l od39 gkl- )olgmhzc a )(garrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that ih lag)ogk1k)l)cg 3do -tl mzjg9( 3f*n the larger diameter wire is

  Materials in which the resw,mkene.6)h .md fa yek,)yk7pjt88 ristivity becomes essentially zero at very low temperatures are referred epn).7ktk8yh8,6,fr ja. d kmmewye)to as

  What current is flowing if 0.67 C of charge pass a point *k q e4bpn)88pckx4b2 sz( hopin 0.30 s?

  A charge of 12 C passes through a xpjg6y/hpc(55n67l* v xv rtfn electroplating apparatus in 2.0 min. What is thj66c* t pvnr /p5vyxhf(75lx ge average current?

  How much charge must pass by a point in 10 s for the currn8.mq db o.(skxb0 aw e-lmw8;ent 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 yw/q)cnw5w4u2 yg( b d:liq9r $4.0 \times 10^{16} \; electrons$ 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, hasi4xrpg*qk 5v.* ew+yk been left on for 10 min. What is the net number of electrons that have passed through the coffew5rxyqe kv* 4ipk*.+ ge maker?

  In an electroplating process, it is desired to deposit 4lvx:u:n1o+hw :wq 4m b0 mg 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 s blv m:qw1on+4wxu :h:ilver ions are singly charged, and the atomic weight of silver is 108.)

  What potential diffee -(gy ymn5n u8tle u24y cp)8,t4vfkfqshk(( rence is required to cause 4.00 A to flow through a resistance ofp4 8, y4unv tqenfgl)2( c((yks hy-8mk 5ufte 330 W?

  What is the voltage across khgi/*zu0 ,6jaklu-jxocj35 dy/ g. ma 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current w4tk kbs3me c(5ill flow?

  A light bulb operating at 110 V draws 1.40 A of cu*9 so)o skbe*brrent. What is its resistance?*)9b k boseo*s

  A 12-V battery is connected to)k 5f/lykao :dsy vt9b)w9+nw a 100-W resistor. How many electrons flow through 99y af)nyd+t) 5wkso /lv:kwbthe wire in
1.0 min?

  What is the resistance of 1.0 m coss 6;zq5lbz4:; i man-gmlm2hpper wire of diameter 0.40 inch? (The resistivity of copp m-4:2s mimzb ;za56llns;ghqer 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, y* nw6lj5 re g.4wt;wqif the r ;qn6.r yte 5wlg*4wwjesistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (rtxq jx)cedm:u1k :9+mesistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (ren*8,e yyhmtb m)ys1zt0 8 1mossistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures 0.040 ohms. What *,ohqr, ip 1ffis its resistivity?

  Calculate the current through a 10.0-m long 7x3 s u6)ulc7gjrk-8wclunw,js. ;ok22 gauge (the radius is 0.321 mm) nichrome wire iwsc ) 7kw8xkls;.un3uj-u7lc, jogr6f it is 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 long and of rectangular cross-s xh4hb0;,8sqkn blv )gection, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resik)h, ;xvb bq0sh 48glnstivity 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 mm and a resistivit0 s ni1y w/q3bv)nx; dw/wotr2y 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 (resistivitbjgsvygy 1sb ct2j3 (1p9 a92l7e4 taws ,zo1jy $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resis4cmmjw 9bhx. z+.o8jvtance 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 platinuxyhj ql8o7; ;gm 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 hg90ceth*f;zv5t4 k y determine the melting point of indium. The resistance of the platinum wi *h;t5 vyctzkf 0ehg94re 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 thpjg+4)t7k xz t kjq88mrough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it n nm:)ro uy gj :swj1jyk*i021draw?

  A 150-W light bulb running on 110 V draws how much curren7r hqi ;g1 (gml 8a qozsz;b5,ouged-*t?

  What is the nominal resistance of a 100-W light buh lr23d:eieg 7 wt:ylnm+gs4 +lb designed to be used in a 120-V circ++g hdrsmtgi327we y:nl e 4:luit?

  A toaster is rated 800 W at 120 V. What is the resu 1ap :d*1ze ,grnh7poistance of its heating elemeneh :p o1,gandrp* uz17t?

  A 200-W resistor is rated sln3hk43y yz, q. u9xlr5b :imat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is jfz/d.sstb8 lt4(we *rated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is usd3 vhjipt) g4eqn2j08 ed at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it i xc,iinxov8 )ussilptl5 ig03w1 (.czn28so 9s used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resil5k hij 6bb: cy+ 6v4 1-4mb6kgvndadrstance?

  How much does it cost to +g 2lp(aroqv ;fgkiu64 /x l:xoperate a 25-W soldering iron for 8.0 hours, if energy qx/ glko:igp;v(u26f+xra 4l costs $0.08/kWh?

  How much energy does a 100-W light bulb (*ho ugd g+g6yuse in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for l s 6 wxvab 94//alhe,lgko.,t2.0 hours. How much heat energy is produce. llek// wght,os 4,lab xv9a6d?

  A battery is rated at 12fk3xr9 i,w3fb V and 160 A-h. How much energy does the battery store?ff3w3 k, rxib9

  How much energy does a 25-W sold;g ; )yoy9rdetering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power comp pzc5f-.uklvj*,jt.xpa 1 qc9any charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bplz*c .-t5auj9q kfxj . ,cp1vulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If ea2; dxtup m+fjcw37h +lectricity costs 10 centfp;+37t +xch wdm aj2us per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of pqk,c.2ne,wo running a central air-cookq2np,e.w c ,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 dg6xnnov(,ik :)h 3j xerier operates on 240 V and generates heat at the rate of 2.1k3ighvj (eo: 6xnn,x) 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 flows throclo-svb:k)3 wvj eg68ugh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsdt 5 , ;anfpvqjb4h;7kouwz8bjpe0- 3 $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 2.0.8u vxr. 3ms),l1 te9talp36npimzbp hp has 60% efficiency. How much current does it draw from a 120-V linttp.)sn8pim9.b,xpl 6 l 3r1m ave zu3e? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power sdm )/(dwxe+foource. What rms current flows through this dde) wm f/dox(+evice?

  A 500-W device is connected y6ijf)+ w5oqqto a 120-V ac power source. What peak current flows w q6fiq+j5)o ythrough this device?

  A 500-W device is connected to a 120-V ac power source. What is the peaw8p5, u vb,v +s)b r3qqwoje.jk voltage ab5 8,jo vw 3equpjbw.,)qs rv+cross this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current it canmio(v5,dav j 6 carry (in order to prevent fire danger in building constructdm6io(vv,j 5aion) 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 is $8.5 \times 10^{22}$.)