A device that produces electricity by t/z pgof+ ctde 9/c 3xj2wyaa--ransforming chemical energy into electrical enez y+ 3g --c//tc2jedx ao9fwpargy is called a

  A car battery

  The total amount of charge that passes throu suslm4*a ts8+gh a wire's full cross section at any point pe*a8s4+ts mslu r unit of time is referred to as

  The direction of convention current inphe/7- og6 -fg9-r hbp *xoyrgkjp(1s taken to be the direction that

  A coulomb per second is the u lv( 4l8mpg5ysame as

  Car batteries are rated in "amp-hours." This is a measure o-yil6j y)0 rflf their

  The resistance of a wire5chtnc1t3 a8 a is defined as

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

  The resistance of a yz2iq mg153ec/ tez cmoox556wire is

  The resistivity of a wire dependsvi38o ;g4v us y86f.8y gl kfuheu7:lki0 udm1 on

  Which conducting material has th twhl bv96c,r ,,d:vr4 :nmrqte lowest resistivity value?

  Consider two copper wiren8*+xtgjn.3m th )*tn79ig.lbx arng s. One has twice the length of the other. How do the resistivities of these two wires compare?gn gjl.hn+bt.inaxt g )m*r3 8n*7x9t

  Consider two copper wires. One skz m dm03d7d92e+h rbhas twice the length of the other. How do the resistances of these two wires corb70medkmz3 dd+ h 9s2mpare?

  Consider two copper wires. One has twice the cross-sectional area 4 ql 2.asa+delof the other. How do qld.a4s 2la+ethe resistances of these two wires compare?

  Consider two copper wires. aqvvp1d6f0, dk ynw)p7gk *w( ,k0dkqOne has twice the length and twice the cross-sectional area of the other. How do the resistay, aqp6k gk v d7qnf,dwd0 v1k)(k0p*wnces of these two wires compare?

  The length of a wire is douboy41-xrmaq j t2ep(6cled and the radius is doubled. By what factor does the14ea(qt ym pxjr6c2o- resistance change?

  How much more resistance does a 1.0 cm diameter rod have ct6m o,cko( 6wqompared to a 2.0 cm diameter rod of the same length acwk,6(tmo o 6qnd made of the same material?

  The resistivity of most commong.i+g2hmwp r0 metals

  Negative temperature cou29 yvtu0wbg3) ilu. e4 v,lrjefficients of resistivity

  What is 1 W equivalent tv83/ fx3gwpkavn:nb.kui . q3o?

  A kilowatt-hour is equivalt 8(zoa :)jqbkent to

  If the resistance in a constant voltage circuit is doubled, the power kg8h,- jlm0yfdissipated by that cirf8k,- l h0jgmycuit will

  If the voltage across a circuit 0fizqrcqo 9g3v vzb4u :-*a8rof constant resistance is doubled, the power dissipated by that:9rv8ob0czz-gv*arqq u43i f circuit will

  If the resistance in a circuit with constankp 3a+xril.+ tz0-juiofa ; r)9/ hyxbt current flowing is doubled, the power dissipated by thta a/r.jxr fo+ b)9 0uiikl-+x zy3;hpat circuit will

  If the current flowing throu;wygcmx( ;z+e sbft/;v-pbx2 +gnb yfqg7q (9gh a circuit of constant resistance is doubled, the power dissipated by that circu;s/b g(tqfbb2cgq7 (; 9mxnz w+x+gy;eyv pf -it will

  During a power demand, the voltage output is reduced b4e(0qoekng d3tg :2k fm8 *f 5cau;bofy 5.0%. By what percentage is the pmd0o2fue*4;ftcka oekq g3 :bn5f ( g8ower on a resistor affected?

  A current that is sinusoidal with respect q/edw):.l ysshy91p lto time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twicw27br 6 fyd*2 wz7 qvpnwn1rm+e the diamet1yrn2+77pzwb 2mf d6 wvwn* qrer 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 b nob2)h,xumz-d/x /xigc a6 mx5g4s m5ecomes essentially zero at very low temperatures are ref5xm6n45 -z i cxhm2dm,/g buaogx)/sxerred to as

  What current is flowing if 0.67 C of charge pass a pahxnz+ nx) z3(oint in 0.30 s?

  A charge of 12 C passes throug ozy8-*y ,vmvgh an electroplating apparatus in 2.0 min. What is the av* ovy-, zvmy8gerage current?

  How much charge must pass by a point in 10 s for th 9mp5don6vu2be 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 u bs 3cn1l+t;w$4.0 \times 10^{16} \; electrons$ 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, has 6ay5 .vkuput)mq1 6otbeen left on for 10 min. What is the net number of electrons that have passed thr6vtymp )6u.q k1t5 uoaough the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver i8ukxhx 8 3ib7on a metal part by using a current of 2.0 A. How long must the current be allowed to run to deh3i 88uxki7b xposit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential differeto+s37ih :jp: ils)p::ra ipwnce is required to cause 4.00 A to flow through a resistance of 330:+7 :)rpi3pj:ahlospi:tsiw W?

  What is the voltage across a 5.0-W resistor if the current through it isusq:kk.zdp +9hjbh)2pl1 ,y x 5.0 A?

  A 4000-W resistor is connected acrlqxbrw l)r3*4)ce m qdrsfai -a-*0h/zkza* 2oss 220 V. What current will flow?

  A light bulb operating at-b e8avx31/7qp f43kpb wplh i 110 V draws 1.40 A of current. What is its resistance 3 1kfe4/pbqwabip7lp83vhx- ?

  A 12-V battery is connected to a 100-W resistor. 7 l*nt k jr+zsbi/6lv; How many electrons flow througl6+t7j lbi n*k/zsr ;vh the wire in
1.0 min?

  What is the resistance of 1.0 m copq jsb c1*g7aj0 ura0- ril5 w(k)f*daiper wire of diameter 0.40 inch? (The resistivity of copack1(rbg*s005)i jf*wji d- 7 ruaql aper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a cirmpyj),p1fji7t0x* -tehh n *fcular rod 1.0 cm in diameter and 45 m long, if the repij *pnhtf*j xh71tm,ey -)f0sistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copperpm h)n(d bys*n.3u o)d wire (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 (res uqs: x99ipl6l(bubr id6n0jf2vdn6 ;istivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 resistivity?m) n5ndzaeb nk ft z9i,*2(ga.

  Calculate the current through a 10.0-mwif i vp:. ct11y/w xbix 3ke,-a:s-wy long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a y/3:1 tcwki yw--ve.1 a:b,xwpsxiif 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm lr/a04ai od1+godp ;tsong and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? da +;r4 io p0/s1agodt(The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichr hvt6u;diuc5.ea 6o)come wire 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 (resi+f af36 1 ;7qxkflowglstivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resi r.3n(tn :e5g2nw7kp9w uynjistance 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 resrx-fk*7wz*o.laweqig5)8 h cistivity 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 dxcna 7,lddq 6(etermine the melting point of indium. The resistance of the platinum wire xdcl(n ,a67dqis $2.000 \; \Omega$ 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 aq vd 3wc1:iy7x /.orfun $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What currennz1p gjke e3+iya/- 9bt will it draw?

  A 150-W light bulb running on 110 V 14 hipi;ldr(jdraws how much current?

  What is the nominal resistance of a 100-W light bul0f euk9, jdsgvpo 62s(b designed to be used in a 120-V circui ,e(f02ogdp96svj ksut?

  A toaster is rated 800 W at 1201a 5 ix),.vt31vbvos5whxzxo V. What is the resistance of its heating element)bv1ho ,xoi xzx3.sw15v tva5 ?

  A 200-W resistor is rated at o ) r,h2hi hjou8py6r1$1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated el;zs5d + jf9wat $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 Vk58 jf qawmq1:b4fa,k jg.d ;a, what current does it draw?

  A lamp uses a 150-W jw;( m, rlseio bs9y01bulb. If it is used at 120 V, what is its resistance?

  A 25-W soldering iron ructf1de;p)ci0,cgv2f ns on 110 V. What is its resistance?

  How much does it cost to operate a 2 je+snifn0e 8dsl:)gas*zc2(sbbz 2 35-W soldering iron for 8.0 hours, if energy z+dls(ef i*nz s 30a:bj e)22cnssgb8costs $0.08/kWh?

  How much energy does a 100uln*:1f+et n6/ z6r2m9q(fy qkq hzeq-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to jyu9zp 2p**zr cqga 09a 120-V line for 2.0 hours. How much heat energy is pro0 y9j gz rp*pcqz*2au9duced?

  A battery is rated at 12 V and 160 A-h. How much energy does the b5 ef,s,g:b39zpgq4 e64zxypff6pp jpattery store?6bxfz,:9fg4py jppqs 4 e pe,5f3p 6zg

  How much energy does a 25-W soldbsn6d /z5 o- 7ltntdt8ering iron use in 8.0 hours?

  A 100-W driveway lig1y2 sv0g8hs2jweib0 sht bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electri syj8e22svh01sb iw0g city used, estimate the annual cost to operate the bulb.

  A 400-W computer (comh+ vj/gepucx(9l 0:inputer plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the con 9 0pi(el/gx jvh+u:cmputer annually?

  The monthly (30 days) electric bill included the cost of runz f fh0)xilj,5;r4urening a central 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 cos)zhfr ,rfj;ix 5eul04t of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element ,v-1sbkz:g v bso70emta pd3)in an electric 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%. (Assume the temperature is unchanged. In reality, the resistivity of the wir-:a gtopzb0s, sv k3b)1evm7d e will depend on its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flow336 i3 (tk b4epakfsv5,zbwsm s through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs b ao:*9iei/aionem1l l (u:a9) 5fkjs$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.i dkty:e 2)7 )vsbsi2axkg. :a zu95vi0 hp has 60% efficiency. How much current does it draw from a 120-V line k2ua:gidy)2:)b75tvszx9 ii svka e.? ($1 \; hp = 746 \; W$)

  A 500-W device is conneahycq,-u5fs, lr+ ,pt o- b,urc.7wazcted to a 120-V ac power source. What rms current flows throuq ,5wba7u, ft -s.crlu+r-ho,apy ,czgh this device?

  A 500-W device is connected to a 120-V ac power source. What peak currt7s-0g5in kpna -1hvment flows throus0n mh-nv a5-7 gktpi1gh this device?

  A 500-W device is connected to a 120-V ac power source. What is the pea 00.siv1 -jb m/yzl ,afhf /vacof31mck voltage across this deviv mh ysm-i 3 l,oc/cazb0f.11fjfv0a/ce?

  The diameter of a copper wire is 0.08.5dlb1 eut6gm1 inch. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A.ute1 m.g l5bd6 At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)