A device that produces elpb pc (u1jk4m8ectricity by transforming chemical energy into electrical 1cu(pb4m k8pj energy is called a

  A car battery

  The total amount of charge that pasr ;umh k6vk;,sz0t8 fjses through a wire's full cross section at any poimu;0rhkt,kj 86s f;zvnt per unit of time is referred to as

  The direction of convention current is taken ttormo 3,-sea f9 ;ub+vo be the direction that

  A coulomb per second ygp zjjocb sw.w/i; x9x9hp8xq,-q8; is the same as

  Car batteries are rated in "amp-hours." jdeg vb w, 5f7x94)hpxThis is a measure of their

  The resistance of a wire is defined a: u((ica+ llm)fzko3h vw+.oys

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

  The resistance of a wi6nr (zn:l xa35rba sq*re is

  The resistivity of a wire 5z+vo spgyeseh50: i8 depends on

  Which conducting material hasqkme2 x c1om0kjeub67 b,z,9n the lowest resistivity value?

  Consider two copper wires. One has twice the length oc 5i3xiy b o8i(t+ohklop(5 j,f the other. How do the resistivities of these two wir ,ibix(5ojtcoy ok3+pl( 5h8ies compare?

  Consider two copper wires. One has twice the length of the other.u;t9y6*:s cbgrhl )yk6 gxz d6 How do the resistances of thehb ) *;ckg6yz l:9ug6xrtsy6dse two wires compare?

  Consider two copper wires. One has twice the cross-sectional area of the other guzqm13ougq n) 4d4w6. How do the resistances of these two wires comparg64)quqm4gz d wo3n1ue?

  Consider two copper wires. One has twice6 dpzilyppdr:2cs l3 7uc;/i. the length and twice the cross-sectional area of the other. How do the r3pil 72yc6spic dp;/l d:zr.uesistances of these two wires compare?

  The length of a wire is doubled and the rm p1chtzx k./tp6gj2*adius is doubled. By what factor does tpjk tx*g/1p 6tm 2c.zhhe resistance change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 cm dibj j)jnodf4 5qgyo)5*1ec v f18ddlu8ameter rod of the same length an)1dl c) jd8nq8v yfoej5ujbfdg*5o 14d made of the same material?

  The resistivity of most common+1jjmn6 h4d0 ph83dhp gmr+ nv metals

  Negative temperature coefficients of resi qhn;+l84lunx:nw 8drstivity

  What is 1 W equivalent to?k7h9k otrzj6 )9w 7dyi

  A kilowatt-hour is equivale3m3e jesn3 hy n080vlyp r:+yv:eunm7nt to

  If the resistance in a constant voltage circuit m:6p:dvwjv g /is doubled, the power dissipated by vpd6j/: wmg: vthat circuit will

  If the voltage across a circuit of constant respz+ oqmhie2/va1;9l-+ * j uqijps9gp istance is doubled, the power dissipated by that circuit zu+ q;9/1e92p piags*lhv+q oj i pjm-will

  If the resistance in,s f kgjwhuwi5d )r; 3klou)ubc+-37x a circuit with constant current flowing is doubled, the power dissipated by that circuoc3uju 3)lw;,ix+hg-r kd b wuk 5)s7fit will

  If the current flowing through a circuitg6fc2un2 ).2vdzyzfas m:h py 11pk .g of constant resistance is doubled, the power dissipated by that circu sgg n2u1zfvyk:phyp z6 cd2m).f12. ait will

  During a power demand, the voltage output is reduced by 5.0-,z l0jl vfg;q%. By what percentage 0,zfl -lqvj;gis the power on a resistor affected?

  A current that is sinusoidal with respect to0xih .*/02 kp dwybh q hv6vg;(qdgzm/ time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. Onp8wg1 6y1qt kne wire has twice the diameter of the other. The ratio of thwtg1pqk ny681e drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero atw/(qywl(empv /m (v;l very low temperatures are rlvwm( pl;(v/ (e/ wmyqeferred to as

  What current is flowing if 0.67 C of charge passqk: 5jk 11ijhc a point in 0.30 s?

  A charge of 12 C passes through an electroplating appar;dvrov s11pb( atus in 2.0 min. What is the1v; vb os(1drp average current?

  How much charge must pass by a point in 10 s for the current to be m joht7mb3 3o*oxa 0ck.g x+8/bk/foi0.50 A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowin 57q;1u9-tlzgkddrqu g 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 A offmm3 u;+ i4z rcgj2zp, current, has been left on for 10 min. What is the net number of electrons that have passed thrczu j,g;mizr 43+m2fp ough the coffee maker?

  In an electroplating process, it cim(6q .lga hy+jfxsdg x 2827is desired to deposit 40 mg of silver on a metal part by using a current of 2.0 Asxmag (xf cgl27jdi.q 2y8h6 +. How long 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 1js 9bab yzttd6fm/; *is required to cause 4.00 A to flow through a resistanay tbd1s9bz f*j/mt ;6ce of 330 W?

  What is the voltage across a 5.0-W resistor if the current through bq2v2ta25gzn d 7fm g3it is 5.0 A?

  A 4000-W resistor is connecte5 d7ikclgb3-u h,r a7qd across 220 V. What current will flow?

  A light bulb operating at 110 V dr*u v)fi3(gibhnr g:h(aws 1.40 A of current. What is its resistance?i*(g (f hb:rh3 giunv)

  A 12-V battery is connected to a 100-W resistor. How many electr fmzt3*iay 3v)ons flow throughmfyzv*ia 3)t3 the wire in
1.0 min?

  What is the resistance of 1.2a1w zlgc9wq7*a; u r/yg3kda0 m copper wire of diameter 0.40 inch? (The resistivi19zra;* 3 gauld/2qgk7wcawy ty 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(wig.6 wg4jji dt,r+,j vfe- q long, if the resistivqievg. ,j ,+4jt -wwij(g6drfity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper we0d4 7/y(ssmdka/ rf: yhuj)tv:ni 5jire (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 wd;d/ qfnhp/b u u,*(dfire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 lh1n 5mvja b-.ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm) n *w,q0 m sxswuoz4;,bx+8hiwfezj 0)yichrome wire if it is connected to a 12.0-V battery. (The resistivity of nic0mwsbz +, suexhjwf8wx , oq )i4y0;z*hrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-st994 kig sn8/izo+ pqwection, 1.0 cm x 2.0 cm. What is the voltage drop alongoq98 +snigwzi /t49pk 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 of 0.50 mm and a resistiv5t1n 7tqpv. :ty .kblpity 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 6zy7yi1 s l v)boydic(n(v6 ntu849f dwire (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/orku (35pe .ltc/ hkm+7vat f a 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 ofn+/0rlpt, xmv 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 themr nlxdbu+7m* 3 5*lep melting point of indium. The resistance of thp l*+b7mxd5luemr n*3e 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 through an po.xcj*lcr-k03 k1zlwg0pp gi -04+t.llx t t$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will ijf6myiw2)9cu(yg7h:1z h vr k t draw?

  A 150-W light bulb running on 110 V dr8wh-e 8nvw/aik 2 c8hqr l4p(kaws how much current?

  What is the nominal resistancec7 sj9tq k(nqs7,b(u 9s i,fr7av6r vp of a 100-W light bulb designed to be used in a 120-ua9,fjv7 ,6irqp v97(bt kss7c( r sqnV circuit?

  A toaster is rated 800 W at 120 +f snxm;e .goy g9-+xlV. What is the resistance of its heating element?o-xs;eyfg+n.mxg9 + l

  A 200-W resistor is ratp+ dt2bcy f1 i8h1o l /vxpnwudk/m+:;ed at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated at303ptb i cjd9fmy;/wth ;3hjh $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W g t lw/ml2d( k.a-2bxlbulb. If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resistanc7bl-nrj m-tl+nie+g ,vlj6i +e?

  A 25-W soldering iron runs on 110 V. What is its resistance?tc(kc*3s1xh/ xs+gj f

  How much does it cost*vrw 0afm 9*hbsc,3ot to operate a 25-W soldering iron for 8.0 hours, if energy cos 3f09, wabt cm**svrohts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.)8firi3fyfc,8,3.zno 4 vu g1a hdrc g(,iacx0 hours?

  A 1500-W heater is connected to a 120-V line f+ v.- dbh/un w3zq1e1btyssp 5or 2.0 hours. How much heat energy ibt s-1/s1+nzy evq35.bpduwh s produced?

  A battery is rated at 12 V and 160 A-h. How much energy do *ho :-uvi/zo;-: vtnexx7u gnes the battery store?*/x7n;o -iogn uvt-:x: e vhzu

  How much energy does a 25-W solderiiotnf-zybxf ,j, t;8941x fhn lj)9dwng iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assumingrn1rgeuk9c n ;;09boa the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.9g k oaeru9;1c;n 0brn

  A 400-W computer (comp;o( cunp:7ai h9,u, ymve-t bhuter plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computer annualhb, en79may,v;u- (chu toi:ply?

  The monthly (30 days) electric bill included tx skv:gig7e +vt sl ki38+l/s.he 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 8.0s.tk k l3 g+svvsg:i+x78l/ie cents per kWh?

  The heating element in an electric drier operates on 240 V and generatd,x pube 3(n*au;45nbmz oo ;ges heat 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 power dissipated in the heating element?gx45d u onb ;mzp,aob*e;u3(n

  14 A of current flows throy iba04 fq0o6m,.p lala+tikj p41 ;axugh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs7vwcqjrp(ftw u kq9o 0ul*o 24j5q9 1y $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 tjv8,ga c/ms0 mhe rate of 2.0 hp has 60% efficiency. How much currm 8vsc,m0ja/gent does it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms e8j x,*7lnxk0mn:qxp current flows through t*k7x0 exmlnj pn8 :xq,his device?

  A 500-W device is connected to a 120-V ac power soudsysj1 6sxt 5)p.nh9n24etc zrce. What peak current flows 59cxtedyzsst 6 n 1.pns)2 jh4through this device?

  A 500-W device is connected to a 120-V ac power source. What is the peak voltak01 wu1h :2hmezctdv(ge across this devicem hu1w2ce:k1tv0 hd(z?

  The diameter of a copper wire is 0.:n4x2t6h i1a 4c xctuym ijw(+-tkv)qran3 1 c081 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 thj63(cu 1cnq41ty-x4kxha)mrcat :tiw 2+nvie drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)