A device that produces electrickkq7 opx4ct :*g :h.mcity by transforming chemical energy into electrical energy is called aptg*7hk:qco.c4 mk x :

  A car battery

  The total amount of charge that passes through a wire's full cross sectd1ir 5 ga4x4il9qn-a wion at any 1ia45wgxadilqrn49 -point per unit of time is referred to as

  The direction of conventio(- vx,pd5 vnwu9xgr7fn current is taken to be the direction that

  A coulomb per second is the same y74ofr-vxlafrctr1ia, b *:(as

  Car batteries are rated in "amp-hours." This is a me lp s6/r*qn;hwm(+rktasure of their

  The resistance of a wire2sc 7fs xr ;htysn 3yu-+sbo;+ is defined as

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

  The resistance of a wire 2p/ k n::li; xeqcsk8zis

  The resistivity of a wire dependsj,n9 5hs )qlbf on

  Which conducting material has the lowest ress;:kjsz kw/q ;istivity value?

  Consider two copper wires. One has twice the length of the other. How (9:oa qf,u x e7puc.fwdo the resistivities of these t wp9cx ,q .u7oefau(:fwo wires compare?

  Consider two copper wires. One has twice the length of the other. Hr:mz5 8a3qz wb hpk;e3ow do the resistances of these two wires ma3w ;rbhek 8zp3:zq5 compare?

  Consider two copper wires. Onx 4wufup ks3zp-ce64 rv242u we has twice the cross-sectional area of the other. H 424 uwupusrwp23vze6kx c- 4fow do the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cros2no f o49kret,s-sectional area of the o2 ke,9fro4o tnther. How do the resistances of these two wires compare?

  The length of a wire is doubled a1)rss1i hau 4dc(v ub+nd the radius is doubled. By what factor does the res)+( usb4vas ud r1hc1iistance change?

  How much more resistance does a 1.0 cm diameter rod have compared to01h:mucmqxt0 t ,b0 ngwt1ct0 a 2.0 cm diameter rod of the same length and made of 0nw0,t t tg xtcb01mhu c:q0m1the same material?

  The resistivity of mosrwujwyp qn 453qf;m049x l /cmt common metals

  Negative temperature coeffi*tu6lx. wh jw-cients of resistivity

  What is 1 W equivalent to( r u3* m,p6q3fttxy5ec 6aoxl?

  A kilowatt-hour is equivalent to. ,5b5x-r 9h b+ b1oogceaiizgvay )z7

  If the resistance in a constant voltage circuit is doubled, the p tmj7l+1bj6 r. bpfo;nower dissipatedn61tr;p jl7 b.omb f+j by that circuit will

  If the voltage across a circuit of constant resistance is do i/sx-(tse fv3ubled, the power dissipated by that / tssv(i3fex-circuit will

  If the resistance in a circuit with constant current flowing is doubled, the po 6nce7o2*rxah wer dissipated by*ehn x 27a6roc that circuit will

  If the current flowing through a circuit of constant resistance is 4+kq s8rel birzs.w2 4doubled, the power dissipate.r8 + iqsr442skelb zwd by that circuit will

  During a power demand, the voltage output is reduced by.c( 0bekmqozdc 5vu-6 5.0%. By what percentage is the power on a resistorvockc 0dz5b.6uem - (q affected?

  A current that is sinusoidal with respectx* g2vjda5 r+j5wy,9ab ,ne tg to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. .7 5e iiktyg(a One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to th( kta7ie5y.giat in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very loc)7 vvnx v*v v7l0(axro l1)fgw temperatures are r07) vfxl( r*c og)lxv1 nvvav7eferred to as

  What current is flowing if 0.67 C of charge pass a point inotawf77ea b8n 4z qn73 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2. dlykgub-.-bnm,k*- 5 2j ,uwdo;;nqyztfn c50 min. What is the average cuon,kmcjkzgn2-bb*ntw .-yl5 dy fdu uq5;,-; rrent?

  How much charge must pass by a point in 10 s for the current to be 0(1o qmrr :er8z.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 ,90mngwkgtrb wz) to.-7 p8wp 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 of culntz e568xb t8rrent, has been left on for 10 min. What is the net number of electrons that have passed throughxte8z58 nb t6l the coffee maker?

  In an electroplating process, it is desired to deposit 40 (qkrj:ad (l3i mg of silver on a metal part by using a current of 2.0 A. How long must the current be allowed to run (d ak:r 3jq(lito 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 4.001 jwgnp-tnkcph )e:.tqd yj v:,s-cpt1+ c4w/ A to flow through a resistance 1d,cvhw-y jp/4.qtgwcn::-) t pptnekc+sj 1 of 330 W?

  What is the voltage across a 5.0-W resistor if th0uclgl q(rcmz7 .6 (n(fco3fce current through it is 5.0 A?

  A 4000-W resistor is coni6zytdf4/ x .mnected across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What. nj rp7hh,goku0+ 5 dr-r,zxo is its resistance?r5,k jdo -r 7.o+gzp uh,nrx0h

  A 12-V battery is connected to a 100-W resistor. How many electrons flow throu.i z (wt7j,ywcq*coi88-c nc qze;u y(gh the wiwcnwz* 8(q,cq-7 ij(ocyi e .8zct u;yre in
1.0 min?

  What is the resistance of 1.0 m copper wire of *i alb8ml hl.pva9/g6diameter 0.40 inch? (The resistivity of copperlhm 8g9 vial/6*lb.pa is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a +38xqs uly/ spcircular rod 1.0 cm in diameter and 45 m long, if the resistspsxl38u+/q y ivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resi k6k3ffro 3)gxstivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wirecyubtx 0 g2x+/ (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, 4dc2v0 gf8bvt2.0 m long, measures 0.040 ohms. What is its resistivity?

  Calculate the current throug2xk+wm0em9 n8 -7 do jn-puzjrh 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 rej+znkn0pj rm xeo 8d7wu-29m- sistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-secti,2 okh 2o:y nvt1nedratj31+xon, 1.0 cm x 2.0 cm. What is the voltage drop along its len+1e v 1h 2,jo:trk3oa2nxtdy ngth 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 wirzvvya 53f;mk5p6y y0m2obi8 ye 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 coppe 3t v2ksy;*ehe35zb btr 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 rolgp:;(xymwk/8c 9 emesistance 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 platinum i;wpol zy5fk9 3s $3.9 \times 10^{-3} /^{\circ}C$. 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. T9phft :3iyg9 8,ggav4v4wlys he resistance of the platinum wir,p8wa g :ysvtgli994v43gfhy e 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 anfrqv q l+0k;s;dd 0ao4 $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What cuwp,+;qfh c u l:ek5kw:rrent will it draw?

  A 150-W light bulb running on 110 V draws how muc;s.s/ nwg pjhlua( ij.5vj a5l)zj; s,h current?

  What is the nominal resistance of a 100-W light bulb designed +s(dp -0+n)3lg iu *r (cjszwthrf5zjyu2j d0 to be used in a 120-V circuitr2hz +wj y irjs*fd+)(00zuldt c(3nspj-g5 u?

  A toaster is rated 8rcb5e qz9 6e7*syerngk2t;s . 00 W at 120 V. What is the resistance of its heating element2.ts e 6 *s ;5e9qbrynrkg7cze?

  A 200-W resistor is rated at p1*kp* kb lvkvz/5c k*$1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated at zmn) k7 efq:l(/2gkbfgek56k$1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what *whmz o)e):lbcurrent does it draw?

  A lamp uses a 150-W bulb.dgxcwg6e9 2 70h/piae If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resistanvqh2 3 4:c1k ez* pfoth. m(fl:rhqaq.ce?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours 3* z zy-)y:frddc)ft.6 -texzz7 sdyp, if energy )efydsdrzzx 3 --: dz).6z7tfy tpcy*costs $0.08/kWh?

  How much energy does a 100-W light bulb*7 )rxa2b noe2 v7dl5 ubmuj4d use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat e9bwb r5 r4w(t*qhl3u w3x 0nwinergylhxn t(bq i4rwww0w*b393 5ru is produced?

  A battery is rated at 12 V and 160 A-h. How much energy doesxs8be)+u)e k/7euqp 6ar5 tx f the battery store?f uq8str6b+e/ak)x)e 7uexp 5

  How much energy does a 25-W so kqq2y1.8nd 1t2gsiyhldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per dj e, ww1rxj*ftsvw 2i us)y y94-+a1cyay. Assuming the power company chaaws9jftw- sjy+w 1y4 r,y2eci)v1ux*rges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hourp;9.8grujc pu :jyn; as per day. If electricity costs 10 cents per kWh, how much9ac gry; upnu:j.8p;j does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a tvp:kn*c(ytaq 8 ; *v2 i/ pbro*hvyw7central 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 el rv2n/:tay t8k v*;wb (p* vcihoypq*7ectricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generategr3p5 1rnwbx)s 6ae+ ds heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the sbxpd)6 w+r anger351 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 through 0e3rg6/iitl87 m yuk u6rss7j$8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costr gie2;tun33gn ,nr //f 2lnuss $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% effixf9f ba*1vqmi-li9 *fciency. How much current does it draw from a 120-V line? (bf9ql1-* m*xa viif 9f$1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current flows cv5nquhei z;30w/6ovx3 e g+rthr/ i0;nxgez wrvhuvc3oq5e3+ 6 ough this device?

  A 500-W device is connected to a 120-V ac power source. What peak current flowl,a+ ( smi 59iuygvr)js through this device)(us,iajmy9+v5g l ri ?

  A 500-W device is connected t, d72ptpdcrs r)j5egsl-cn5:f 8v1uoo a 120-V ac power source. What is the peak voltage across this det1nspufg:5d j-5 o)c2vsd l,7 rrecp8 vice?

  The diameter of a copper wire is 0.081 inch. The maximum safe curreyp5u,z p2lt(x nt it can carry (in order to prevent fire danger in building construction) is 20 ly2 pp( 5u,zxtA. At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)