A device that produces e*qqa;lg o/ee:lectricity by transforming chemical energy into electrical energy is caeo qa leqg*/;:lled a

  A car battery

  The total amount of char c b**f)2xj z5mvmeli8 e*m.efw1d3sgge that passes through a wire's full cross section at any point per unit of time is referred tofm58*vj) mfidcbz ewl g *32*e1ex.ms as

  The direction of convention current66x.q4au w(xyw2 qrbh is taken to be the direction that

  A coulomb per second is the sh: j0624/mf fuyiu+ fcjfzd:tame as

  Car batteries are rated in "amp;a r pr8l.k *mxhj9,k;xd+)rqdj(j q x-hours." This is a measure of their

  The resistance of a wire:2jl d 0dihx9x is defined as

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

  The resistance of a m h,*1.; klwseep,/cnbb kpa;k6vw 8i wire is

  The resistivity of a wire depends on7;9 *uwse qqxu

  Which conducting material has th1zpe3t i b-c ywks27z/e lowest resistivity value?

  Consider two copper wires. One. 29y*ujs nsp2gvmq c0jv/b bfhsbr 4lw3,+u; has twice the length of the other. How do the resistivities of these two wirey cvrg vl2qs/ b9nu0j + fmhu4bs2., sjp*3bw;s compare?

  Consider two copper wires. One has twice the length of the other. ,c 3bdgn/lu5;qcnc/ b+rqld 9How do the resistances of these td,n/r53/l cl +nb9;cbd cqgquwo wires compare?

  Consider two copper wires. One has twice the ccsq nsd+-, 4dmj w2fgqu0h/7vross-sectional area of the other. How scu/7 nwgm0dd-f+ hsj vqq4 2,do the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-f/c9.0qp (ge)a zngd zs)as9f sectional area of the other. How do the resistances of these two wiresnf)/p9f0sc q.zsdz( ) a9geag compare?

  The length of a wire is doubled b6f34kn8fkyi rw03b s and the radius is doubled. By what factor does th6r4b wbi kf38fsn 30yke resistance change?

  How much more resistance does a 1.0 cm diameter rixm:pn3u1 i 2med n+a3od have compared to a 2.0 cm diameter rod of the same length and made of the mi1:a p +edunm32i3nxsame material?

  The resistivity of most common meta g8-0owr*em oils

  Negative temperature c o iu,/c;-ew5idad.dproqf /9oefficients of resistivity

  What is 1 W equivalentcw,tq qg5ihgb .,fix(2oih1 5 to?

  A kilowatt-hour is equi dne/ 3orakq6s/+. z4nh;svo gvalent to

  If the resistance in a constant voltage circu076 r 8.frcetxba+snoit is doubled, the power dissipated by that circuit wilf. 0b6tcxr+eo ns 8ar7l

  If the voltage across a circuit of consc a rh2tfqxr ,s0myvn sf/-e;slc8,96tant resistance is doubled, the power dissipated by t s tarhxl sv8s,/ c6f-r;q9mceyf20n,hat circuit will

  If the resistance in a circuit with constant current flowing is doubled, the rxql4nb7p1(tp .zu*e power dissipatedp(e*1x tql z.7bur 4pn by that circuit will

  If the current flowing through a circuit of constant resistance is dbx nk1s*gowpyz9mm)y 39np 1mzu+ (j0oubled, the power9p )o1 +g9zsn0*m mnu3b(1 zypwyx jkm dissipated by that circuit will

  During a power demand, the voltage output is reduce4jz1xj + rhf-+ qgtp3mx.i2fud by 5.0%. By what percentage is the power on a re3r+zj+q 1tfjh.2 fipx x-gm4u sistor affected?

  A current that is sinusoidal with ji*x; gqm/6+.zuvzn(jwf1 xu respect to time is referred to as

  Consider two copper wires each carrying a ,7y:y*sa..j)kbpu pud(lwnx current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift veloy . .a,u7 (pklx:s)dbjuny*wp city in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomx9hd80 dpa 3zces essentially zero at very low temperatures are referred tac 980x3hzd pdo as

  What current is flowing i- vrqug 2glgpvp) (bj*+ vd7,lf 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparbe3v4 f4oymx;ys lbm 6k.6u(ratus in 2.0 min. What is the averaok6fb4elym r3.xu ;m4vby6( sge current?

  How much charge must pass by a pk)m,m-z9/fy:ygl galoe9.c :em(qqn )ui(m b oint 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 by zi+2;zp3b//so a) bpkowp;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/pg-jd4i yp 5pvo r:1j04tiry 13.5 A of current, has been left on for 10 min. What is the net number of electrons pid4 ygjiyt-r01o v 4p5p /:jrthat have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver onpmjb8,qo l dhsw( 6,l6 a metal part by using a current of 2.0 A. How long must the current be allowed to run to deposit this muc,psw l(qmj,lb6 h6od8 h 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 flow through a h(5kn bjx(,*ldcewmv/d0 q a5 resistance 5vn,/hb(xdcq0l m5 a (kedjw*of 330 W?

  What is the voltage across a 5.xw,( lmu ucvxrz:*r6)sr+lt sf6u/ : k0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is conne+wl;hpt wo9 g5cted across 220 V. What current will flow?

  A light bulb operating at 110 V drawj k f:rl-f;p s18iypp2m ll3 s5wi9zas)/un,is 1.40 A of current. What is its resistance?3w9j:-1nfl smpuyis8r p2sl a/,ip; k)zfil5

  A 12-V battery is connected to a 100-W resistor. How mcm.ihoo, i4v4 +ee.g; e .k 5qxdnrk.aany electrons flow through tgoveri.54 i eqm h,ko4.+a .nek; d.xche wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The rhc u8)2zf1de resistivity ofhec z d28ru)f1 copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a ci q4ap g:ym i*9d+nkd4l( g;fntrcular rod 1.0 cm in diameter and 45 m long, if the resistivity isfdkd ;gm tnl:g *qy4(i+9pn a4 $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wiag2g.j6 bv.wh teyl.3re (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 (res0y z8*8yw,xox2vaah gistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 b2bc68us7 c zdohms. What is its resistivity?

  Calculate the current t m/ u+exav(m 7hv9bbs5hrough a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The rvm(9+5bbams / 7uhvexesistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross.o605tmkqw /;jytcbz 1(m ag,xynx 0q-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The res.1 gn6,w t(o0/5;zjkyt0ma ymcqqxxbistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire fv 9) 7ggdw5ffu+ tb:bhas 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 wg3d- f e;wn9emire (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 r*-rvk(j aet9b 3fhpo/esistance 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 r**- .lxg2jbhwnvlq) jesistivity 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 meltin w3) ciniv/i f;;pajq5g point of indium. The resistance of thi/; f5)ii nw3qpa;v cje platinum 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 throu;b0qaumbat j2+g8 kr3gh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1d2kbxllc 35y1 200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how much curs 60pg)rn0x*fwhg/*mj nqtdn(g9 3xe rent?

  What is the nominal resistance of a 100-W light bulb designed y5o5 aa+c si)h2 djgl+to be used in a 120-V clh+2)cio+saadg 5yj5ircuit?

  A toaster is rated 800 W at 120 V. What is th rb)h /g j7oqkv9p1ct-riv*u4 e resistance of its heating elemen9o/*v)iq huc7j rpgrb k1tv4-t?

  A 200-W resistor is rx( edazp/7on ,qfw7kuh 7k:;pated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated .zwh -fro3b,s+m z4rlat $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 1zmiar igr6250: 7tdud20 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is , *6xz(c:ltkfldjs u8h3 ) edaits resistance?

  A 25-W soldering iron runs on 110 V. .od) zv3 yef3(k lf(s k+4qfodqz:1/swk :pwx What is its resistance?

  How much does it cost to operv jfnw56h ber8m7r0kc8y(ac-mg u2 6v ate a 25-W soldering iron for 8.0 hours, if energy costs wa hc6-f8b v8mgevnku2y 50 rr7cm6j($0.08/kWh?

  How much energy does a 100-W light bu y.ls.6rq :,f iu0wdjvlb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat e.rlpx)v7 guk 7bofi9;nergylpo7r7b k g. iv)x9uf; is produced?

  A battery is rated at 12 Vj0(j5od kfirz77dsoc z )f)1f and 160 A-h. How much energy does the battery store?z7sdocijjr)(d ff 70k)1 5zof

  How much energy does a 25-W soldering i ;xm2bvq2b5kc 0;grkq0tr pk (ron use in 8.0 hours?

  A 100-W driveway light bulb is ojix f+rhivw.6z:. ;m)cq * ystsdx -z2n 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricityz:s f*wh.c idj+;.q r2mz tsxx )v6i-y used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If el8smwdv v07f ,yectricity costs 10 cents per kWh, how much does it cost to run the c0 fmdy7,8vwsv omputer annually?

  The monthly (30 days) elec s he, u0i3/cx2vyddq5x5nww6tric 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.x3 cw62 eyn0i ux/55sd hdv,wq0 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 opeko *xa*;.e-e;s:a1sd q 5.h/n s)e nyfurtkykrates on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out and, in ras;dke nk yhq-y .ke :r/ x.nts1)o5us*;*aefepairing 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 t9vtpgc 0.c js: /pz+jv cis :;::ahevwhrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs oodg 7.et4wbcjk2ec, w-r p)na29fb; $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 dxqj -:ub.o7o has 60% efficiency. How much current does it draw from a 120-V line? udqx-b7j .oo: ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current fl 29ij0y3lskk7c nll;sows through this jckn9 0 ;lssl3li72 kydevice?

  A 500-W device is connected to a 120-V ac power source. What peak cuayt5+ 1j z:o gghpy7n7rrent flows througn ta+o hjg g51y7pz7y:h this device?

  A 500-W device is connected to a q7 aktz n();ho120-V ac power source. What is the peak voltage across t( nzhkq)oa7;t his device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current)wugqv:n4 y6 0m.lxkp 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 numb)v64 :xgpnm lk.wq0yuer of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)