A device that produces electricity emb81t ir/4qa;ao gw0o 9u xe3pe6,wiby transforming chemical energy into electrical energy is called 6tamoe 1w0g4a e,b/px9oui3we;i 8rqa

  A car battery

  The total amount of charge that passes throut**,zo9kdw/qqm;g m ugh a wire's full cross section at any pmzquq ,*k;d*/g 9m wtooint per unit of time is referred to as

  The direction of convention current is taken to be the direction tx36z)n, ajj:mgb a y6u62wrpbhat

  A coulomb per second ueczd0yj 4x20r1ldz*is the same as

  Car batteries are rated in "amp-hours." This 5)1v vu*1evgz9uk xjx is a measure of their

  The resistance of a wire is define4hjhl sp mzpm.) -rh0)d as

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

  The resistance of a d0kh+jka 5e9q wire is

  The resistivity of a wire 8ysbzon as.hz/9k +/ .sa kyv2depends on

  Which conducting material has the lowest resisv xgg.11+m*tt/3b6k x kwmkdmtivity value?

  Consider two copper wires. One has twice the .ou vh6 gz6hg8)5pkgwlength of the other. How do the resistivities of these two wiw)g56.hu8 kv g6hpgz ores compare?

  Consider two copper wires.gu 1h*e 5+2apacpkr4l One has twice the length of the other. How do the resistances o+u2*p ha1rp4egcl ka5f these two wires compare?

  Consider two copper wires. One + q0z3c,kuz6vm 5f bduhas twice the cross-sectional area of the other. How36z,b0cduk 5+vfu mz q do the resistances of these two wires compare?

  Consider two copper wires. v9na3y u( t- pdkjru-8One has twice the length and twice the cross-sectional area of the other. How do the res8at rjuud -3(knv y9p-istances of these two wires compare?

  The length of a wire is doubled and the 8, /xfb0kqb3wfckof.radius is doubled. By what factor does the resbx ,bq.wo3f/f 08kf ckistance change?

  How much more resistance does a 1.0 cm orx-a y8;0+jfr-i;zh oabq*l diameter rod have compared to a 2.0 cm diameter rod of the same rx+-a0loah i;b*yr-o 8z f;qjlength and made of the same material?

  The resistivity of most co+i/t -( inqehqmmon metals

  Negative temperature coefficients of resistivit+l a-pb5x2 usay

  What is 1 W equivalent t8lw1n(58gr-nt5fulwrso) l z o?

  A kilowatt-hour is equ x2-*tou:s5t b* utpmiivalent to

  If the resistance in a co)epncyf+g3efj ew.gah 6.(n 6nstant voltage circuit is doubled, the power dissipated 6f a)(+ep.w .geyf jen gn6h3cby that circuit will

  If the voltage across a circuit of constau/x -l2:q6 -yh-pja xxhkw ;nknt resistance is doubled, the power dissi2 upxhjxkw:hq-x/- ly;a kn 6-pated by that circuit will

  If the resistance in a circuit with constant current flowing is doubled, th.8 urty kz*/0ca3qvqk e powe z3 yck /k8.artq0q*vur dissipated by that circuit will

  If the current flowing through a circuit of constant reqf vr)bwyv-r2g )hu9 z y05o2-ic)q qysistance is doubled, the power dissipated by that circuit qc --gb9)2 r yv)qf2)wyuqvi0zhryo5will

  During a power demand, the voltage output is reduced by 5.0%. By whavv8s y4vu+ubl)q4 l 4it percentage is the pyuli8su 4v4v)v+q4lb ower on a resistor affected?

  A current that is sinusoidal krqai5w m78 e 6db0i()t y4okdwith respect to time is referred to as

  Consider two copper wires each carrying a currea s((,m1 vphiofb0ht0 nt of 3.0 A. One wire has twice the0(botpm01i vha (,fh s diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very low f)/6 x *2dzvysrn(oxb temperatures are r*vbfxn)z6roy(ds 2/x eferred to as

  What current is flowing if 0.67 C of charge pass a point in 0.moi4 hi* 2)fnv 3c cvgf,j,m)f30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0egl :xwp2,gf3 min. What is the average,2p:3f xge lgw current?

  How much charge must pass by a point in 10 s for the current t8xw 2e;5cbegq2 7mxad o 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 flowin2a,oov 2 h8 zabhvm1j-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 dtwkhw7w 6d bn5. p/8x*j sij.mraws 13.5 A of current, has been left on for 10 min. What is the net number ofbxnws5/ h86dp tk wmj ..7*jwi electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silverwlz ,n ciliqe- 2f 9,9*/rxyoc on a metal part by using a current of 2.0 A. How long mustwex /cf-i9 oclzi,,n9*y r ql2 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 cs1x ulh 3x bo(z3hd;(sause 4.00 A to flow through a resistance of 330 W?xs;xu3o 3sl h1(( hzbd

  What is the voltage across a 5.0-W rew3f2j4rtei0kr3t4ka9 u .lm csistor if the current through it is 5.0 A?

  A 4000-W resistor is connected acros.z rtac9/3cdns 220 V. What current will flow?

  A light bulb operating at 11 u0tw6mfbwb); 0 V draws 1.40 A of current. What is its resistance? wum6);tbwb f0

  A 12-V battery is connected to a 100-W resistor. How many elem4g kjzqi35ghr id4/)ctrons flow through the jgi)/g44hiq3k rm5 d zwire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The resist 9gdx vxr4g1vp q35-.1rxmcchivity of copper i5v9vg -rmq.rc x14cgh 3x xp1ds $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of /ccqbnaf+-d ; a circular rod 1.0 cm in diameter and 45 m long, if the resisti-bqndaf+ /;cc vity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wir,hub fzpr5w)ff2 egq9q m:q us09gf6;e (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 wo,ey w9n25; 8 ekdlta1quu 2v0h ,eswqire (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, 4mf0ot dwvq4a jrq+ g8g 3;2)dt.0 m long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radiu3lk4-aye)qc7j p4og as is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (T7agc)keq -ypj4al3 o4 he resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section,xtze/ 1v;u34kgp-zc ql5 fyf ( 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivity of coppe13lt/ p5u;qzfcyg 4xz(ke - fvr is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius ofwo1tpiie7 (12 z p8xj5 r,menx5pplm) 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 wir5aeuk /z d:5bfvdw8 au ik/*1ne (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 resistance 8) sm;wgyq.loof $18 \Omega$ 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 is ry sy*8qf-gj7dl4;vt $3.9 \times 10^{-3} /^{\circ}C$. 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 meltp yg7 cf8p,uky 8tqzp.+g c7dy.0;n jt/mwry ;ing point of indium. The resistance of the plpdwpctryg jq;y..7, 0;zmpyc7y 8/ n 8u+gkftatinum 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 ank5jdgr:*c9z 7 ro.rm prskc-k3 d0f4h -/cnqy $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 n(n9anhzu u/r)1h8m t W. What current will it draw?

  A 150-W light bulb running on 110 V draws 8xm8 m9dul-cu how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used in akx / ;go p6(;fn4z,evkjh efh1 pqx9*e 120-1kx , 9/e nvfp ko;hqxep6j (g4h*;zfeV circuit?

  A toaster is rated 800 W a:+r( nkdqj qg6t 120 V. What is the resistance of its heating elemenj+r( 6:qdgnqk t?

  A 200-W resistor is rateiy;m59e cl e:i/t*fkrk4k hh4d at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rk1( a nb0g(x pes5.wrbated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulq6 woz7fm)43 i cx-zzlj4jph4b. 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,uim 4 d345(s cjxm0d xz4f;4g-yqtlwy what is its resistance?

  A 25-W soldering iron + s)vht**q f9n9dgz3pd osyg5runs on 110 V. What is its resistance?

  How much does it costr vgm7c + r+by)c8,xkl to operate a 25-W soldering iron for 8.0 hours, if energy 8cvc yr+k,lgb) mr +7xcosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 ho xjyr r.d aje pw1d9/-b4r-t6vurs?

  A 1500-W heater is connected to a 120-V line fofy0yl sg)k-o2 r 2.0 hours. How much heat energy is produce0l)f ogyy2ks -d?

  A battery is rated at 12 V and 160 A-h. How much energy h;ex + v,b6tvi-ipn*/*wquda does the battery store?ptad6;bn/* wxei hv+ *qvui,-

  How much energy does a 25qj4+ *k 93uho9nymqbg -W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on8svis:n2/ya i:gl*k l 10 hours per day. Assuming the power company charges 10 cents for eachi :a/* gsslyivk8:2nl 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 hours per day. poi1(,v5 6pe5akuy.egg b2o b If electricity costs 10 cents per kWh, how much dogp2(v.a , b1uo6e5iy ke5 ogpbes it cost to run the computer annually?

  The monthly (30 days) electric bill included the co w 4s/o4qsbeo2;9-pdcs nt kv0v/a+tn st of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W livos n4/evtq0 -np4s/w9 +d co2b skt;aght 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 operates7 cqim v kunar6k;63q8 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%. (Assume the temperature is unchanged. In reality, the resistivity of the wire will dependan7u; q cmir8q k6kv63 on its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows throug+ 3nme6i, 2xvllw2jyr h $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsq rdqk/n m ln1k;3k(;k $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% efficiency. Honi9.ex35 i ucrw much current does it drawc un5r39ii ex. from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-i7m qqxp l1 uh8j((qg0V ac power source. What rms current flows ul0pq 1hij( qm87(gqxthrough this device?

  A 500-W device is connected cc).y egmteo1a/qv5ji .j)xcc 2,)nzto a 120-V ac power source. What peak current flows through)age.x nj.5izc t1, /c qe2voc))cmjy this device?

  A 500-W device is connected to a 120-V ac power source. What is the peuy+ 1gml9 st)kak voltag t)sm+yk9g u1le across this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe currekyt/pix55, z xc)ivnn :p 4/oqnt 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 number of electron carriers in one cubic centim,qitk/n)/y 4ix5 zpv:5oxcpneter of copper is $8.5 \times 10^{22}$.)