A device that produces electricity by transforming chemical enhdh+5heb vfp()1b sc4ergy into electrical energy is calledh 41p s(5b bcefhh)+vd a

  A car battery

  The total amount of charge thattm55o z d3lwyy73zx*pf mn4nv21 6dxc passes through a wire's full cross section at any point per unit of time is referredv5p f6d*l3no4md72wz xt zn1y m xy3c5 to as

  The direction of convention current is taken to be the direction thatm/skm.mlwvj2e 5ys 60

  A coulomb per second is the sau ,fnc4q36c:- dnnfjg0 okw - -hfc.jpme as

  Car batteries are rated in "amp-hours." This is a n cv)vmqs f*akt*j- 4;measure of their

  The resistance of a wire is define0dm(shw r4hk.5jawdip 4dj :0sv*p (kd as

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

  The resistance of a wioy1b5 g2 xo,g0cuh6xp3lc f3kre is

  The resistivity of a wire depends qd/l 1ki9pnfje;kf sl1i6ng 9nr1,g4 on

  Which conducting material has the lowest resistiba)m s5cxe7e h sf2tj/43xk24xtorj i1n k.s 8vity value?

  Consider two copper wires. One has twice the length of the other. How do thw91//7bikwpu aqqjk*a w( 8wee resist7 wkea9*k(/wj8 pqwwq/u ib 1aivities of these two wires compare?

  Consider two copper wires. One has twice thea06 gojkn*yr* length of the other. How do the resistances of these go 6rj0kan *y*two wires compare?

  Consider two copper wir2q*i v d; isg0g(e4ipbes. One has twice the cross-sectional area of the other. How do the resistas i;gp*qd4( 0bei2 givnces of these two wires compare?

  Consider two copper wire7ogp:ce x, ,l bc9oe3rs. One has twice the length and twice the cross-sectional area of the other. How do the resi3ge7o9,c:c lbre,xop stances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By whatw,cewz( /a80g )hmr tgbbmo)6kl6 g( m factor does the resbw,c( )lrbk oam0m hzgg(t/) 68 gw6emistance change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.hd ;-fl0 /kviz82ueh i0 cm diameter rod of the same length and made of the;0ilhd8 2/ zfvui-k eh same material?

  The resistivity of m4dam5i1 6 ndsbost common metals

  Negative temperature coefficients of resisti*gc+er)hb7 zax:vm7*b 0 ara ovity

  What is 1 W equivalent to?2lx(5.fs d2 hqyc- aqf

  A kilowatt-hour is equivalent 7.hn9u(5 r vwnrvbq:nto

  If the resistance in a constant voltage circas+m .- .hm 3b d4bvfqjct2y(kuit is doubled, the power dissipated by that circf.ds +3 mthmjq kc-v 4.yb(2bauit will

  If the voltage across a circuit of constant resistance is doubled, the power dis r k1 w ye+r(ui;.5sbt1h.wlntsipated by that citlwwst1 5r+;ky hurin e(b. .1rcuit will

  If the resistance in a circui(s /wm : wy/wof 3df.jeo2ez) wihf tg3ce3v/9t with constant current flowing is doubled, the power dissipated by that cir/3o 9te: /f ms)jwed2yc.iw3/ow(ffwhg zve3 cuit will

  If the current flowing through a circuit of constant resistaiw o 4p(nx9337 /9mwxuzd foojnce is doubled, the power dissipated by that circuit wilzwf3o9 74x jdm93i(/npwox oul

  During a power demand, the voltage output is reduced by 5.0%. By whaz8/psfz ud+ 47x6 ajtzz*,ry(zonp* e t percentage is the 4yp*t rz7sdup +o/zz8x6 *nfazz,j (epower on a resistor affected?

  A current that is sinusoidal with respect to time is referre+b;b-u5t7r /e s tib:xox;o 5oio dj.md to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twicx hoa9tgmqq44g k.-m;e the diameter of thq gkm9mgth; . 4-qo4axe 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 becolnteg cf 6he+1 yp:g.7mes essentially zero at very low temperaturen6:f7ltpec.+1 g ehgys are referred to as

  What current is flowing if 0.67 C of char5w m8:r;q6yz9rbhedx ed7z f2ge pass a point in 0.30 s?

  A charge of 12 C passes t7;/hl;n 5yk wq co4 2fekf4wrqhrough an electroplating apparatus in 2.0 min. What is the average curre f/ wk2no f57cqrq44;e; wylkhnt?

  How much charge must;-xhcmmru*r16 pq8 r r8+se tg pass by 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 0 g5rv9amu0df $4.0 \times 10^{16} \; electrons$ 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 current, ha4jgt+rm4l.y; 7 kpbya s been left on for 10 min. What is the net number of electrons that have passed through thp 4jga7.t;y+ymbrl k4e coffee maker?

  In an electroplating process, it is desired to deposit 40 mgw5 qt) - lwq xky8 f(szjx7az76v0wy8g of silver on a metal part by using a current of 2.0 A. How long must 5 ak7vw)q6 tjszwywx- xf7 lz8qy80(gthe 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 cause 4.00 A to kf:p8s, vn,zbflow through a resistanc8,kp:, nvbfsze of 330 W?

  What is the voltage across a 5.0-W resistor if the current throuc x9(rbs+6l4ivl-ay qgh it is 5.0 A?

  A 4000-W resistor is connected7d lfd9ozxiao44mv v5/ : z,an across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resnnd3;pfoo1y5p( hm *e istancey( h o pd1e*5m3onp;nf?

  A 12-V battery is connected to a 100-W resistor. How many electronx6e1icy. odja xy0u-cu-*t* ns flow through the wirnyexy6u-cj1*i0 axt-uc o*. d e in
1.0 min?

  What is the resistance oon.mm*88yl6s -diz pof 1.0 m copper wire of diameter 0.40 inch? (The resistivity.mno-m8*yilo6d 8psz 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 leyk h8 +(d15wyjgb z1e1c7munong, if the resistivity is yme5b 1dneh cy+ k17gj(w8zu1$1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivimpqzxo-:m z:l,ickylho59 l0 e7v:t-/t ,ss bty $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resi fct,t l5*zba6stivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measucl qlo-/.pwbc.ic0th *2x0c 2 s-fw/o5nsyyvres 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 ga- *3x yi6gntknuge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V ba 3i6kn-y* txgnttery. (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, 1.0 cm cei: 1k*aksd9x 2.0 cm. Whaia1*ke:9skc dt is the voltage drop along 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 wiri94xf31)in+kl loi bpe 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 copper wire (resis23f lvbvff: :wtivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance o//hk1v:+ y/boank hm nf $18 \Omega$ 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 obbzqr4jm1k))ot ( wd,mo+va g:3 n*jsf 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 the melting point ofisme.wcli45 w9a +n+ f indium. The resistanceeaslicwwmi++9 5f.n4 of the 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 u em1mt6 n8dj7d1i, uy$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 3b,h0p m9z;vuy m0cxjW. What current will it draw?

  A 150-W light bulb running on 110 V dr/pojlfsgi77b 6cz5.) j2w iraaws how much current?

  What is the nominal resistance of a 100-W light bulb yvp7 m(x3/uoddesigned to be used in a 120-V circvx7/(3 ymoud puit?

  A toaster is rated 800 W get*l-u tov 20d*uk8dat 120 V. What is the resistance of its heating element?d8 dtou*t0vu2el k-g*

  A 200-W resistor is rated yr4b*b:rs0o0k)jsu iutc1o : at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratmg 42gw .bf2tzed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it zk qs/lzf5-g9 t rv:)yis 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 r fwk755l gt 62ojv)d;.vhlhtf(cac7 yesistance?

  A 25-W soldering iron runsx) n ygw48lw/k on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, ii(sv +wux *3lrf energy costs sw( +3v*lurix $0.08/kWh?

  How much energy does a 100-W light ;g 7iqmy x,dql8)z p-obulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. f4gpsi4t: zo g t(ugo+j*ti +*How much heat energy is proo*+4z stj:tpg( *4tuog i+gifduced?

  A battery is rated at 12 V and 160 A-h. How much energy does the bs -)f*hz1a pivattery store?s1p f)z iv-*ha

  How much energy does a 25-W solderiq xhq7g7z)/x/8 dqa gang iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming2vl vachh6i01 the power company charges 10 cents for each kilowatt-hour of electrici0h2 vvcia6hl 1ty used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is tu5itt6j5twtx).b xzgb/nfw67 xf5r;u5n 5mov rned on 8.0 hours per day. If electricity costs 10 cents per kWh, how ib6v5b55/un twon fr6 x57g. xw5xztj;ttfm)much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a /np2)s x/kzx( r(ntblmcl 8(kcentral air-conditioning unit for 2.0 hr/day at 5000 W, and a sericxk28/ )b/((mxzt s n (kpnlrles 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 8.0 cents per kWh?

  The heating element in an electric drier opb2( y6p lei eg/d1 (nhbdnf9vt 6ac)e4erates 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 r (ebb4cn hl(d1pt 29i/gn6 y6ve ad)feesistivity 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 k)i+c; j y6bcbthrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costskgxymhjfr;as ,( jx2 mp3+: q9 $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. How much c vfdon/icwnl5 45( 4 oga bs-a*/y6zpuurrentpbslo/ vaad(4n /ug 6 wf-cyn o4*z5i5 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 current flowsvvi(l qsqt:hr s.: )m5x:5e fr through this sl5qmtiqsrr vxv5e ::: f).h( device?

  A 500-W device is connected to a 120-V ac power sou4bh s br dun1b47l:yb*rce. What peak current flows throughbbd1:lby7n r4s h4*ub this device?

  A 500-W device is connected to a 120-V ac power source. What is the peak vol/ 1f72-aw kmwqp2 kercx n,0gbtagwc g w,pbax07kre12fk /-mq 2ne across this device?

  The diameter of a copper wire is 0.081 inch. The m/jq)5,e6 5g1p,lkxticu7arg f o; *aulk f3oiaximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what/3fi )ta uro*,5o ,cuxqg5jel ka iglk617fp; is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)