A device that produces electricq2(afrb8j:c c*wma +; ti k0iaity by transforming chemical energy into electrical energy is called akti 0i: bqwcaaa ;(cjrf+m28*

  A car battery

  The total amount of charge that passes through a wire's full cross section at aw e7dyb4x ma n.h.9fss46 rgl,ny point per unit of time is re4 ex6g.9fl 7.,yshmbrwsand4ferred to as

  The direction of convention current is taken to be the direfmt cqep z9c sz7,7 pbqo2ff57y(rl89ction that

  A coulomb per second is the same as9kesld+-h h) p

  Car batteries are rated in "amp-hours." This is ay,0c zg2ol2monwg z/( measure of their

  The resistance of a wires*-a keq 8q71 mwd8h*k8ndnif is defined as

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

  The resistance of a 5ad1r4 x kmj (wc:( nguun;ur6wire is

  The resistivity of a wire depen63 pm.r4wgaxk ds on

  Which conducting material has th ztuj;k+t0 igm0q- -y9tqz-g-thbrx)7 t h 5hpe lowest resistivity value?

  Consider two copper wires. One has twice the length gq.j+1s bl.igsqv -e /e1avm 4of the other. How do the resistivities of thmg4v+gb - 1a.q/i1sj. lsq veeese two wires compare?

  Consider two copper wires. One has twice the length of theu8fag.b. w,di n3 mlc, other. How do the res diw.mg,8 ufnabc. 3l,istances of these two wires compare?

  Consider two copper wires. One has twice the cross-sectional asu2 eu/: bz(wekpyz ksu1,p **rea of the other. How do the resistances of these two wires *p1up:us2 , eeys(k/wb kz* uzcompare?

  Consider two copper wires. On,s(gt9r-vxd i0,pon d1lkm/ me has twice the length and twice the cross-sectional area dn ,rgtd,iv1p0x o lmkm /-9s(of the other. How do the resistances of these two wires compare?

  The length of a wire is doubleuq,k0d,xs-6yov vdjbr .* p3dd and the radius is doubled. By what factor does the resistance chan.6 , odxyu,*0q vrkd3p-vj bdsge?

  How much more resistance does a 1.0 cm diametekq53 /1e.or4ciy u oear rod have compared to a 2.0 cm diameter rod of the same length and made ofyu/5icq 4ke oroae.3 1 the same material?

  The resistivity of most common metalsn6:hmfd8.xx-w) zzuj6w 6ie j

  Negative temperature coefficien tc7u152jn aflsg +8phts of resistivity

  What is 1 W equivalent toblbx0bukt+0 c qw(cro1)k* : bh x,r,t/2c atl?

  A kilowatt-hour is equs7ucj9rot3 * eivalent to

  If the resistance in a constant vskq(po hr;16 poltage circuit is doubled, the power dissipated by that6q(op;r s1h kp circuit will

  If the voltage across a circuit of constant resistance is doubkg 4nk taq2fne1-c)g4led, the power dissipated by that circuit fq ckagn4e-kt41n )g2will

  If the resistance in a circuit with constant curreg5f6x2/mpigls lum-p 4*wc)knt flowing is doubled, the power dissipated by that xsc 2i4mp g5flu6*/ klm)w-gpcircuit will

  If the current flowing through a circuit of constant resistance is dkc4p4heqt* d, jz7d+ loubled, the power dissipated by tha ck *tq+lhp4d zj,74det circuit will

  During a power demand, the voltage output is reduced by 5.0%rchzb x (mz*... By what percentage is the power o (..zr cmzhb*xn a resistor affected?

  A current that is sinusoidal with respecvt8gqphcrry+2 5 ;bajrs)3 (s t to time is referred to as

  Consider two copper wires each carrying a current of 3.0s zk7 5esya 19r*d(ozv A. One wire has twice the diameter of the other. The ratio of the 5s*ode 7kzr(zv 1 ys9adrift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the re6xccs:i+ka(up m(( ry sistivity becomes essentially zero at very low temperaturesc xpu6(ya(icsrk(:+m are referred to as

  What current is flowing if 0.67 C of charge ps/xho0 (h 8gky2)w jppev74/k(oxuwk ass a point in 0.30 s?

  A charge of 12 C passes throughx ec;,9bg(e cmh81g gy an electroplating apparatus in 2.0 min. What is the average currexcge(c; ehbym g1,9g8 nt?

  How much charge must pass by v:,rbci asb(b))j.a* +r hlkk a point 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 if:f+z roq dq;+y $4.0 \times 10^{16} \; electrons$ 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 9m9+ a-5ygk,vcdor35bv xkap of current, has been left on for 10 min. What isvr5aac5x3 9bkdv +ok9ypgm- , the net number of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to depo tn7g7jdokz;;ntmg v27feay/ ) 89qhbsit 40 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 silver ions are singly charged, and the atomic weight of silver vhk; 8zogn d2fq7nt9ga)ey 77;bjt/mis 108.)

  What potential difference is reqta kyyi:1(l1- ng ;thpuired to cause 4.00 A to flow through a resistance of 3 tkply-ity 1na1:h ;(g30 W?

  What is the voltage acrosse 3)yr8gcppv: a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current wiclz/+yw.o+m tffxa v1:.*ri lll flow?

  A light bulb operating at 110 V draws 1.40 A of current. m7n7bb3med e r/8o+-atby:fa What is its resistance7ned tafe7 3o:- +y8/rbmbba m?

  A 12-V battery is connected to a 100-W resistor. How many electroo)0-s1(e 8jg nrc1 hzr3faiv ens flow through the wire i e)-cin(hr0ao g sr8 j1ve3fz1n
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The r9kglc anbl;k (/;klr*esistivity on9;/gr *; blakk(cl lkf copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a ciwg8 m5ax;cb9yrcular rod 1.0 cm in diameter and 45 m long, if the resistivity9;wc 5y8gb max is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistiv,jy i*dm 8 a-ctkd-(i pn7mjh7ity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (ri5xef +qtm:o)jn(4wjesistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m lonfx:4 9d 0npvslg, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm) ni, hu r ngpeox((8t/e3qchrome wire if it is connected to a 12.0-V battery. (The resistivity of,(e tex gpq3no(r/hu8 nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cm x 2.0 wie v s j4meclst32*.++y oydn)d0r m3cm. What is the voltage drop along its length whme*erd i y ms)wsy4++ 3023.dcvoln tjen 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 resi, ga4x gnv0/nitz(2 qestivity 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 (resistivi q,: pbv*1vqewj;l.web b6e,oty $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance 931.y1tk j zda7q*ygkk/1 pp1dhezdqof $18 \Omega$ 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 resistij(vjnn 2(8y,8yay54 mi oi zncvity 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 detbtj75 x 4vi7 zvjng9r54lctg;ermine the melting point of indium. The resistance of the plncvj5;9g4i g77 tjxzv5l 4rtb atinum 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 jg:tcfy/bmy*x ,6 x ftd6;g,q an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current wi8e gfo )l8 l,(wxrc2lell it draw?

  A 150-W light bulb running on 110 i1g2/y.shl.6t/slb cs3 uz vbV draws how much current?

  What is the nominal resistance of a 100-W ligem s tzg wgvc2v,2n;h* 0dv39tht bulb designed to be used in a 120-V cihtg9z n*e0ctsd,2 3v v 2wvgm;rcuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its heatingcdn/o ysycte (/a o(di)(,5qs element ads (/ns/,5co()e qty(ycio d?

  A 200-W resistor is rated fyf*47 4v/8 cayewvav at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rq4v-5 vwsxf-xyzb va+ w,oz,1ated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current does )o-,cz*r 9wyaum 6xu;-ygkf o it draw?

  A lamp uses a 150-W bulb. If vnbvl55 q :pte*gqj/ ;it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. yy)uc sr6cg+x 2;ib/.lk5plo What is its resistance?

  How much does it cost to operate a 2n juotho6jw*m*- j6jq k 37kw65-W soldering iron for 8.0 hours, if energy wjk q366kuwjn*jmh7-* otjo 6costs $0.08/kWh?

  How much energy does a 100sgu5u :cu pkz6n(g2a56l pk.z -W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How7zatks4nzp.4m1r b(:vr /tga much heat energy is produce:ars(.mkg7tv 1zrznb/4 ap 4td?

  A battery is rated at 12 V and 160 A-h. How much en+xmv -zn 5jq;ec aj ./gct6.:drp n5gaergy does the battery store?jegdzp c n ancmq-ax6;vr:/.55gj +.t

  How much energy does a 25-W soldering iron use in:jhl.. h6qgbw20 kquy 8.0 hours?

  A 100-W driveway light bulb 6es cx d0;a3:oh) thy;rr1rakd)ylc; is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of eleca 0dxy3hs6aye t;o)dc;rk h;1l cr):rtricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turo6t,sduvhn8 znfl6f,x:x j: ; ned on 8.0 hours per day. If electricity costs 10 cents perj,z6n nx fd fohvs;ult6,:x8: kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a centr6a1fipp 87m lx/6 xmslal 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 8.01lm/8pxsmil 76pf a6 x cents per kWh?

  The heating element in an elecj2e64bl l * xvru:4azftric drier operates on 240 V and generates 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%. (A24al6lvfxju z b*e4r :ssume 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 thrka/)uifb), 6gfsmznb 1l 2ff0ough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs dww ki;yn-7g.o)h8w:kelka j6+ sh b3$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 f l16n/ .xbdezof 2.0 hp has 60% efficiency. How much current de nf1/ x.6lbzdoes it draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. W / sufd s*o156bm81yoa2cyd owhat rms current flows t 1 omo8/*f5yu6os 1sddb2a cwyhrough this device?

  A 500-W device is connected to a 120-V ac power source. What peak cuz4 bz cl*,+i9xp0a fvbrrent flows thropv 9bxf 0,i4c+z lba*zugh this device?

  A 500-W device is connected to a 120-V ac powuny6v /:3a+ef h9ai 8orzmuy6er source. What is the peak voltage across this deviy vh +n3ermu6aa f:/9u6zi8yoce?

  The diameter of a copper wire is 0.081 inch. The maximum,)15u:xgf( pj o4ot mx fxo-pc safe current it can carry (in order to prevent fire danger in cf: jo4)x-( 5to,uxg pfmx op1building construction) 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 $8.5 \times 10^{22}$.)