A device that produce qwo *nzfojafqu08y:y*v j -60s electricity by transforming chemical energy into electrical enev-q6ajjq*u y :*f80y0 oonzfwrgy is called a

  A car battery

  The total amount of charge that passes through a wire's full 1ovub3 lm qgh he; ;ywre:+/3scross section at any point pesm;y oh:ge/r;q +3 bveh3 wlu1r unit of time is referred to as

  The direction of convention current is taken to be the direction thatm t rygwdo0;yj*) un4.

  A coulomb per second is the :gi+zap tstgn1p:: d- same as

  Car batteries are rated in "amp-hours." This is a measure of -)8rlux;xgc+k(o ar rtheir

  The resistance of a wire iyeqhh 9jcp: 7a3zp0r.(yodq /c +4ssc s defined as

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

  The resistance of a wire ismj+); j qmkr0+vps/fm

  The resistivity of a wir3)jct:(og -wi +ovfgp zwuond w-u;1a3od45oe depends on

  Which conducting material mtl1yn i) /0:2qi;slv tld9 7zuoxf0chas the lowest resistivity value?

  Consider two copper wires. One has twice the leng;xt9ppt .6o . uhr9 jaq(yq5mvth of the other. How do the ry6puv(t9j..9;5 rtoxmp qq h aesistivities of these two wires compare?

  Consider two copper wh.j 3 ypfoy*95q h(fvyires. One has twice the length of the other. How do the resistances of the q(jh.9o fyvy3yp5h f*se two wires compare?

  Consider two copper wires. One ha-l8m wycgg)o,na5(m ps twice the cross-sectional area of the other. How do the resistances of t-glnwapm,g()8c o5 y mhese two wires compare?

  Consider two copper wires. One haiqd6z*07clmx4 c 3ojv6tc+rks twice the length and twice the cross-sectional area of the other. How do the resistxkz 63v cctc+0ljqd6r*7moi 4ances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. q h7x:l4bar+a By what factor does the rbxqa+ 7: rhl4aesistance change?

  How much more resistance does a 1.0 cm diamet3c1 r;ri jw 2 zfj9yjn+1g+ubder rod have compared to a 2.0 cm diameter rod of the same length and made jj+fg29zy1bwr1+cirdn u3 ; jof the same material?

  The resistivity of most cgf1 lkdcvn8aud/jvg9 0xg +)9ommon metals

  Negative temperature coefficients of resi1 ci-japl (vfanq ):0ustivity

  What is 1 W equivalent t 4 g5kq3bq9vwio?

  A kilowatt-hour is equivalent to.h .kxr4hnf2uq.2yqyv 7 on.y

  If the resistance in a constant voltage circuit is doubled, thesj.n24 gz5b, jaeb 5ta power dissipated bybt , 54e2baj.n5 jgsza that circuit will

  If the voltage across a circuit of constant resistanc v1t)ri nicd(oep 3vm97pjt 3y-,jh: le is doubled, the power dissipatee)iry 9mc,pnlh7 t3d(j- vp1tv3:j oid by that circuit will

  If the resistance in a circuit with consgzs +haek-8zd9:hc t 5tant current flowing is doubled, the power dissipated by that circuit wikz-c sa5d9hgzh t:8+ ell

  If the current flowing through a circuit of constant resistance is doubled, th fw9hne8iy5hx zf+a4 8f,k k5ue power dissi +5ffzh nkk5 9ixwhau4 8,fe8ypated by that circuit will

  During a power demandj1 1ens2,e+drlq5pda , the voltage output is reduced by 5.0%. By what percentage is the power on a r2d 1+djqps 5naer,1l eesistor affected?

  A current that is sinusoidal with ref cb(csiqo/ -pb,rf4.i.xu ,pspect to time is referred to as

  Consider two copper wires each :xj2yrq z l48ccarrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the la 2 lyjq4zxc:r8rger diameter wire is

  Materials in which the resistivity becomes 8z/z/n tjfg8 e00ykahessentially zero at very low temperatures are referred to k e/a08j zhtf8/ zyng0as

  What current is flowing if 0.67 C p:ooub--ge-bsig :i xd 61m77w nrge1of charge pass a point in 0.30 s?

  A charge of 12 C passes thr3eg p1zs-a z,tough an electroplating apparatus in 2.0 min. What is the averageazsz,-1tg 3ep current?

  How much charge must pass by a point in 10 s for the curren17b4pam: wvr3ofno6g t 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 flowi hyfcagn n72/*ng 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 currenn2bg8 dj ep2(0cf cu3st, has been left on for 10 min. What is the net number of electrobc nde(gusjpf2c30 82ns that have passed through the coffee maker?

  In an electroplating prol9 ac g 70pyzbsdy2h v-c s48nnjt4k;*cess, it is desired to deposit 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 muy -p*k8s0a4hgb 24cc ;v7 tndzj9s nylch 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 f0;zq+kg/vbk q low through a resistance of 330 ;vq+kg z 0qbk/W?

  What is the voltage across a 5.0-W resistor if the current through*zyisy 4d0yxd3c)*51acafy f it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What currentl4dr s:*1t3o b.p9 uyd fldk(w will flow?

  A light bulb operating at 110 V draws ;1p7 +/hbzkx,r 81 i moa0ux.vdhgcn p1.40 A of current. What is its resistancevp1z+/bcanpi g;.1hdrhx , 7mo 08kxu?

  A 12-V battery is connected to a 100-W resistor. How many rn *:6w,n ulrtelectrons flow through the wrn 6n, :*rwtulire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 2a amgwd 73:ahinch? (The resistivi32a wa:7am hgdty of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in hxypu/xjs : b4 /w8d.q7ifz0sdiameter and 45 m long, if the resistivity is zbx 8hs4 pfdxq:0y. j/ wis/u7$1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper w+3f :t wlbupl1e8.q evire (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 (resistivi6 as epgs--l uu5 o--zmddc:/dty $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 ohms. What is its resio s7a(h r,gn;f ;3njw dsa1:1)aggzdhstivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mmg8ml q4+ 1hngd) nichrome ld8 h4gnmq+1gwire if it is connected to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section,y 5c (9b zedmuegegx-(kg:5 7e 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivity of -75g:c(e m9 uexz eg5b gdkye(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 resy 0mn*mly +ys4( nhs7xistivity 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 wizei n xf /yz -ad/ts4p6hk;0z:re (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 resi.xjsw pa,00 8u6xtdaqb oh 6)dstance 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 plati1-ln f(:ix7v.iip-. qbjjm wuk2;akcnum 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 use fa2j eagdk8f1-8tj7qd to determine the melting point of indium. The resistance of the platinum wiref jf8e7a8ktq1-2jdag 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 thro mw.4audf lnagk0l:/vu) 2n .nugh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. Wzujrg, 4m8b; lhat current will it draw?

  A 150-W light bulb running on 110 V9w z;-*. olrjeap/lwl draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be i*focqime2lt7r a6+e1j( gb0 used in a 120-V 2( *mefo6 0qgb i7ctj1el+ria circuit?

  A toaster is rated 800 W at 120 V. What i2/htt0qg 3lwxf + 7oxn(opru.s the resistance of its heating elementqtt2 x/ .grpow7x+nf l3u0(o h?

  A 200-W resistor is ratedv; b*wz 4ytb4w at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ra+bumzkw upio t8,d(;9x x3c,h ted 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 it drajk-p/utr c3z 4w?

  A lamp uses a 150-W bulb. If it is used at 120 V, whsn g-nh+ w)tl;at is its resistance?

  A 25-W soldering iron runs on 110 V. ku2:ql e8z9e ;1sh ,jsm :sqdaWhat is its resistance?

  How much does it cost to operate a 25-W soldering iron foru ud gvcp90og 4:up 54v8pupy/vvo)e) 8.0 hours, if energy co:dupv 9pgvuyv8 pv ou)p445c/uge)o0 sts $0.08/kWh?

  How much energy does a 100-W light bulb nkr63ij4 , watuse in 8.0 hours?

  A 1500-W heater is connecte k0tk 16ms,t :rga;idnd to a 120-V line for 2.0 hours. How much heat energy is produced?6;si:r01, ktnd tgm ak

  A battery is rated at 12 V and 160 A-h. How much enim8zkg h0orq8avxco4 q ;7m34ergy does the battery store?r44v87ik m8azm 0;q ox o3gcqh

  How much energy does a 25-oz(gl*.nie6xjg rzp34z ,n 6upp4mw8W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10a;m. h.ez *(l)sc4( ojq 9zs kyyqbnv/ hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to opera. aeqnqy)khm9 ;svs(z4*o/.l (bcyjzte the bulb.

  A 400-W computer (computer plus monitkg5 7om )3)pqrao k qht-.6rymor) is turned on 8.0 hours per day. If electricirgr a)q hkm 5 )6-k7m.ypqto3oty costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a central ai/-x cxnt+ 6ar2 yfdmzw4s.x w4r-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 -s4/ywz f.xxr nawc 62+t4md xto the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generates hes.qw498y 2 vucaj/we9j d(pjkat 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.) Whajv/ca dw.q2w kjj(ep9yu 894st effect will the repair have on the power dissipated in the heating element?

  14 A of current flows throughn*o:x2wxtd9 a,c7 n 4gp9;p)r ovtdh y $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs cdzynme;:8k .ycb,y+ $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 l:y:x3f+6 c:a)4d k 6tkbmq+*p tpsqozbx-l fhas 60% efficiency. How much current does it draw fromty43 -k) *p ct f6zxs:bfm6lqqd+lk+ ob:x:pa a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rmzpodinhq,u6p6 : sv2-,4n5rhyz rk4 ns current flows thnq6v6h2i5dus 4 -n,r4pkrpnzo:, zyh rough this device?

  A 500-W device is connected to a 120-V ac power source. What peak current fl)kck4 k9p7ts on:dhx0ows through this devixko s4 hdk 9ptn:kc7)0ce?

  A 500-W device is connected/t498rd+fsk)gdhik k-yuy- tti :i8j to a 120-V ac power source. What is the peak voltage across thd 8ui/:4-9-tk jkft+ki)giryt 8ys dhis device?

  The diameter of a copper wire is 0.081 inch. The mfee3;lxx2cb,l 5 rlu5aximum safe current it can carry (in order to prevent fire danger in5lel e,35xfxc ul2 rb; building 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 $8.5 \times 10^{22}$.)