A device that produces electricity by transforming chemical energy into elckok rcye1:mn7veyvk i6 u33-n4a )0y ectrical energy is c6y7n:r y3y akun1e0ci c4-vkme)v3koalled a

  A car battery

  The total amount of charge that passes throug+-gl ;l77jyb;r(jyw.d+ cmt6qwp u 2v/xjd syh a wire's full cross section at any point per updul7d ryswy (6xjm+jlc2/b -gw7;j+y. v ;qt nit of time is referred to as

  The direction of convention current is takrimgg , hqk8)3n3)0p v rpgh6ken to be the direction that

  A coulomb per second is the mc7e /ie)ku)b3 ;uibl,ltj x3 same as

  Car batteries are rated in "amp-hours." This is a measure of3ohz++qhs yk8 their

  The resistance of a wire ises2hx642qls(+hv vre defined as

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

  The resistance of a wire iy ,aj iyxd/uke .zpdpy/(5 7y1s

  The resistivity of a wl,8k:1esdf q4/ d cr)duvy.ggoqp. 6/bic g( rire depends on

  Which conducting material has the lowest resistiv(e, qcm-oyfw *fgq, xgww5g3+f88 fkapda 3r1ity value?

  Consider two copper wires. One has twice the length of the other. How ,yept.gd 8i t9,ob ybm ugc-:3do the resistivities of the tbbo8p yu:3-gyi t,9d,gcme. se two wires compare?

  Consider two copper wires. One has twice thc8 wjdhtl:i; (e length of the other. How do the resistances of tti (h8w :;lcjdhese two wires compare?

  Consider two copper wires. One has twn1 e tdr*+:ba,*nrnx1i5i oeeice the cross-sectional area of the other. How1nxnd5eatbe * 1:ii e+ *nror, do the resistances of these two wires compare?

  Consider two copper wires. Ona8l8tz:9dcm060t eom zj(xv 0w dsx0 re has twice the length and twice the cross-sectional area of the other. How d0t6zeoazc l rs0x8m0 ( mjx8t: wv0d9do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. Byfu29 av3s2oz t what factor does t9 fotzsva2 32uhe resistance change?

  How much more resistance de /:er5ofwr)2s ma 04vafej4 xoes a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of t e)/ 4afemro0j4ea5vwsx: f r2he same material?

  The resistivity of most commont.hqo xpc-uf.5(l4 cn metals

  Negative temperature coefficients of rv9c nyku :u -a*ljk.x i+yss//esistivity

  What is 1 W equivalent tocisd- (s55p 4y1row vt?

  A kilowatt-hour is equiva/ab9yhiu*h,f: vtfz 5 lent to

  If the resistance in a constant voltage circuit is doubled, the 7s n;orv2*ghsr2ej kl wtjefs*4v:;1 power dissipated by that circuit wi4; v7slgjew*;hjn:*rs2tk fr2eo1 svll

  If the voltage across a circuit of constant resistance is doubled, the powe+txrr i x am)*xm3gd-to 0+g*mv5en*tr dissipad35r- +a mm+n*oxi* gxtrmgt*x 0vte)ted by that circuit will

  If the resistance in a ciwmf2 gi4 iwc7*rcuit with constant current flowing is doubled, the power dissipated by that circuit gif74wi2c* mw will

  If the current flowing through a circuit of constant resis+j5 ar epb m0;apf+hdx, ..xpxtance is doubled, the power dissipardp0 h5ajp +x.x;fpmae b .,+xted by that circuit will

  During a power demand, the voltage outpam, h 3filooe3 z6h::ri ,0htsm( iusu5j lf49ut is reduced by 5.0%. By what percentage is the po se5hso0i 34i(jr : 6lt:9iazuflh foumh,m,3wer on a resistor affected?

  A current that is sinuoo6seu,p .kbl/ qye2e.a6bkvm; h wh70) t bl.soidal with respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0;xae589;kr5t k eguh 1v3y w0 1rsokvv A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the 9e3x 0vk5gv;1ewr1kkh ov y;s8tur a5larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very low temd+jh8 cu;c 3uug6nj /dperatures are referred to anucj/3 6cdh+dug;uj 8 s

  What current is flowing if 0.67 C of charge;tfb kb k6( zl9d5wat6 pass a point in 0.30 s?

  A charge of 12 C passes through anck 4,mz(h,v;ot( bhx c electroplating apparatus in 2.0 min. What is the average currentz;kt b h,cc,ohx(m4v (?

  How much charge must pass by a point in 10 s for the cutzg rbtv ,.v34ti.ss6rrent 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 in r69w,,;c *4sg s elqm)mwao$4.0 \times 10^{16} \; electrons$ 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 left on/rd)rb1ee7 g0ksx x g3 for 10 min. What is the net number of electrons that have passed through the coffee)0x/3dkb7rx1 s rege g maker?

  In an electroplating process, it is desired to deposit0s bypcbju jm2 s215n- 40 mg of silver on a metal part by using a current of 2.0 A. How long b0s cy2bp1jj5ns um2- 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 required to cause 4.00 A to flozmpk rre4*)3g(qh v a,(ap;n r+ c*apjw through a resistance or(h*)jr a* rc;qp k,zv g(3am+pap4enf 330 W?

  What is the voltage across a 5.0-W resistor ifx)mojufa(32r c5 vp p- the current through it is 5.0 A?

  A 4000-W resistor is connected acros3kh8luglguntt9/ yn)/ g88 qqs 220 V. What current will flow?

  A light bulb operating-) mk.nk)h ti0.im gmp at 110 V draws 1.40 A of current. What is its resistance k-ginmh) t)k.0im.pm?

  A 12-V battery is connected to a 100-W resistorxmr6j*ni ux :nyutx1. mc:l*9 . How many electrons flow through the wire.1mxnjn: t6xr yc l:*ixm9*uu in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameu3 6o poz-w5vwter 0.40 inch? (The resistivity of cop6w-u zv5w3o opper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance ofk.z) mawfl)(n a circular rod 1.0 cm in diameter and 45 m long, if thefamzw)n(k )l. resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivityu m ogqjvfo/v+77-5xu $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (re kke,ouaro4tfv83 j .8 ep+ga*sistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 is its resistivity ga u5utqvge.//-ed0z ?

  Calculate the current through a 10.0-m long 22 gauge (the ra0 xdumw xmnrcn -aid39 q:fmh-i2 2x()dius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. ddfnm9(xmxqu0 rncai - )mix-2h2:w3 (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rec,4fitz lvm)-s3*l .q brk)eh vtangular cross-section, 1.0 cm x 2.0 cm. heki*lt-4m3. qz)s,bf)v vlr What is the voltage drop along its 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 oveoqn:56ei 8nub 8ez2f 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 (resin:ej p,8mii;4u2dqav )up9jaiix(:f stivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance ofbx49r:(t1k/vu ruuqz $18 \Omega$ 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 -mde. c+eju, iej)c(cplatinum 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 indium. The redu7kl6q.8z 7 jo abxg)sistance of the pd7)zaq6.8 bl x7ou jkglatinum wire 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 throughg -4b (uy0yg fwpvf)7e an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 12 cf p:jbe(5giygd0ua220e ui;00 W. What current will it draw?

  A 150-W light bulb rux,f6/;mvr zn xpsf r7bu8r.*g nning on 110 V draws how much current?

  What is the nominal resistance of a 100-W light b-7y8 obx bt8jshb/6 klulb designed to be used in a 120-V cirs6ykho88x/bb 7ltbj -cuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating elemex*gw0j;mt ;lj.ohr x,ntlj0t ,g*jr.o;x hmxw;?

  A 200-W resistor is r snu )z+rfem4ym1fh 5k ijp;19ated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated at .e 5y .sx/r rcu602dzqdqmbr.$1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does it drur9yh xme(g0d)*vba. p+ 6nhkaw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what isky; bi:h:nc5b qk5k5tqfac /* its resistance?

  A 25-W soldering iron runs on 110 V. What is itss7qg od)lg -z,q3 8+yvwhow y6 resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, ilkb:hjt 8 w.r5f energy costjlr.tk8:5bwh s $0.08/kWh?

  How much energy does a 100c,pwpph8daylcou)r5 5 n8j7bf8 ,c. d-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 heat ener7ws1 .5ria y amex4g*c f:(mulgy is producee1:7*wm.ixs cg5am l rf( 4auyd?

  A battery is rated at 12 V and 160 A-hyiy 2i)l- zc4g. How much energy does the battery store?z2icyi )-l4yg

  How much energy does a 25-W soldering iron use in dj(t+*+h a 4igewb bh98.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assumtb*2em ld5t+*xlu yc0ing the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the ac lbx*md uyl *2t0e+5tnnual cost to operate the bulb.

  A 400-W computer (computer plus monito+z;d 9 a. rfvq.y(pvibr) is turned on 8.0 hours per day. If electrzf9 vyq+irpd.a(;b.v icity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) elesw 3ozy,gs))rah34b h ctric bill included the cost of running a central air-conditioning unit for 2.0 h s)hw4hyzr3ba )3gs,or/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 operates on 240 V and generates heata zd0hls),c6of uv+x6 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 p)+h fcdol0 66avuz,sxower dissipated in the heating element?

  14 A of current flows6axjxxl-5hjhk e(h 2s,hz) 1 x through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costwn3 sovt21 5mj vun3r/is w:m4s $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.r-qrde*5 sa:y 0 hp has 60% efficiency. How much current does it draw from a 120-V line?*5r:qa-ed ys r ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac p9x v+g(in: gxlower source. What rms current flows through thng9lg vx(:+xi is device?

  A 500-W device is connected ,adqa lsjz*ro14x9 1pto a 120-V ac power source. What peak current flows through this al jpsaz,x *9oqd4r11 device?

  A 500-W device is connected to a 120-V ac power source. What is:nh+d.d/0fuv zel6pnfe7 y6h the peak voltage across this device.ed :f0lzhnuvhf ney/7+p6 d6?

  The diameter of a copper whu( utr3 87e/ro f((c7nkigxtzb 1u*rire 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? (The nuc7((xz8ufer7(n3 1 kbht gort *iuur/mber of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)