A device that produces electricity by tratgko) p *su+0pnsforming chemical energy into electrical tgopk*0+up s)energy is called a

  A car battery

  The total amount of charge that passes throudk8 u 1du;s enb77-tc:csrxcw+f 8 t9bvua9+j gh a wire's full cross section at any pjrx7;cu +d u8f u tnwe:kvc-dsb 1cst79b9+a8 oint per unit of time is referred to as

  The direction of convention current is taken to be the direc8xyt(lzl1hl z3fwm2 8 tion that

  A coulomb per second is tzdjo3; h .8ztehe same as

  Car batteries are rated in "amp-hours." This is a measure ihvh jt/5ipei58k9 ohs1 p).aof their

  The resistance of a wire is wkz 5 xp;i tbj*z1txs(jh s;n.nz* ,v/defined as

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

  The resistance of a wire i/w7myums5ul8p g5j/ is

  The resistivity of a wire depends ogp zxq,) 7ywo2n

  Which conducting material has the lowest resistivity value? cfz2k*8i1 zc .jwg x)uh2kz/ -e.cgiv

  Consider two copper wires. One has twice the length of f5i4duo ozs7 /the other. How do the resistivitieo4 duo/sfzi 57s of these two wires compare?

  Consider two copper wires. One has twice the len-pt : zkt* p+ey/ww)htgth of the other. How do the resistances o t ppy+):t/twhwze*- kf these two wires compare?

  Consider two copper wires. One has twiceq/z;won5o.a(9(xb h gr j oxp+ the cross-sectional area of the other. H rpwaxo9o+h jgoq;.z x/((5bn ow do the resistances of these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-section 7kg)xpj3ybs90mnz* /lo7raa al area of the other. How do thrb)9sxa7o/p3 kg lz *7 myajn0e resistances of these two wires compare?

  The length of a wire is doubled and the rh ukkug*: p(9q)x0y dkb tk;q:adius is doubled. By what factor does the resistance ck: 9)( t0hg;u:dxp yqukkkqb*hange?

  How much more resistance does a 1.0 cm diameter rod have comp 6q4oa9hjlovb qa -;:fared to a 2.0 cm diameter rod of the same lengthq96oa4hqlf bja:v; o - and made of the same material?

  The resistivity of mos w,hmeijnc 04m::z5tct g(o6mt common metals

  Negative temperature coefp vaucb2xmogyoy j6q() q0(; e 1w9fy3ficients of resistivity

  What is 1 W equivaleq+ a 6l*sp3hkjduvc z-/4t+sh-j6 bownt to?

  A kilowatt-hour is eyv,9 m-16cvbff9 qv wr0zq +roquivalent to

  If the resistance in a constant voltage circuit is dou*02i1+xzeimhzip w)abled, the power dissipated by that 2 *izhixw +)iazem0p1circuit will

  If the voltage across a circuit of constant resistance ia rxog/,13fufp1x oj3s doubled, the power dissipf1rx u ,aj 1o3xf3/pgoated by that circuit will

  If the resistance in a circuit with constant current floes6cjk(nic5 le, 6.5 sfu rfw3wing is doubled, the power dissipated by that 6w.f( s6efcj3es5nc 5rul ik, circuit will

  If the current flowingdco 6.yttcp u) b5rm85frq*.r through a circuit of constant resistance is doubled, the power di cd5brt5o)ty6 8*mup crf.q .rssipated by that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By whzqi*omq +m/ d8*j k0jiat percentage is the poweri o8mz* *qj0+mqk/ jdi on a resistor affected?

  A current that is sinusoidal with respect to time is referredw.vobacvd9r57z) r 7f to as

  Consider two copper wires each carrying a cur,n0;oto ocb *srent of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire t,b *tno oc0so;o that in the larger diameter wire is

  Materials in which the resistivity becomes toibj wx 3zvr *y z09vpr4,)b1essentially zero at very low temperaturesvp iv r,woz4yzt9b1bjx03 r*) are referred to as

  What current is flowing if 0.67 C of char55:ca3 w k)d ciphic;kamly4/ ge pass a point in 0.30 s?

  A charge of 12 C passes through ,/f1lrp/7m8qthqe dm q jz1 ;xpe.w8 ban electroplating apparatus in 2.0 min. What is the averaeh1 pfq /p8 jrq7tb.wlm, ;xze81qd/mge current?

  How much charge must pass by a point in 10 s for the currig9bz9 n,v, k5o 2ksojent 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 flowing6ua5o.k,orq(jtha 60bj0ggl 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 current, has been left on for 10 miud3 8mz9dqso *--kbmjn. What is the net numb- bsq*zm3joukm- 98dder of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to depos21qzv51cfz*76 iuz hjg nc( 8 p9vxof1x;dm fiit 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 atomicqzhxi ( 7c1fv1u9z f 2do*icj1;5zmx6 8nvpfg weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flowxt5 p td0 (df4m5hzbk) through a resistance of 4zm(td05khf ptxb5d) 330 W?

  What is the voltage across a 5.0-W resistor if the current throuhpc /,xr kzq8 71w)lb kxe :a;ec/xu:dgh it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current wil0ze 2x(a; xi zurvhj)k +uz11ql flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its rezng*88(+h.tzgvh m2 ha eq(1 3sk:imm dkhmj8sistance?2d8n13 :*msh .thihzha 8jmkq8kmeg(z(m g +v

  A 12-V battery is connected to a 100-W resistor. How many ek( (njk pkahvj (rjk186sz:h;pb .z.plectrons flow through the wirkhr h1 6 8jzbak pj(nsk.vpj;: kz(.p(e in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? sa4q y: 5b/q9ilgj8ddmru7y0 (The resistivi:qygid a r ds0m/u5 jbl9qy874ty 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 long, if tdz1r-/6vl;p rufl3 6icrd ; tfhef/3d1i;pu;rdlv 6 r fzrtl6- c resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivity rl hpb /p6/t3i$1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire7 / jveikqe)y5 db2l;i (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, 4.0 m long, measures 0.040 ohms. W, * 6;ecis rw92 nvv4tuenk;fwhat is its resistivity?

  Calculate the current through a 10.0-m long 22 gd8 j-lj)v-zf4s ynor9auge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (98--yj r4)ol fdv znjsThe resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular croiorb oa7y 7 o0p1wkk )/wh,kv+ss-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when apk/o7bow+ 1)rky i7k v,hwo0 it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wir 8mc6mf ma/52p5r)qqmob8e5da ronx:e 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 hp 55xs/6;tfb; oho+ krop ;huwire (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(zsrdian()ro;m6 h +pwpl2gu2, (yhz a resistance 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 coefficie pnl ;i0g +/ 1ugh+ayqqn,ey ,q*mxu8xnt of resistivity 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 determine the mel ctu0 pxat*diq:y vi6r63g 2oja+z3,mting point of indium. The resistance+t3jqitydp a6* i0o6rxva,g 3uc z2:m 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 thrj)x4(s4ex2 u-vq((fz1/wk gjoyjt a n6 v ygk*ough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rqvteel 3txl,;l4-uoox0j;42 x ( eeopated at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V d 0mwundy bvb-z.4t .k(raws how much current?

  What is the nominal resistance*o4t0 +nukqne of a 100-W light bulb designed to be used in a 120-V c tkn+0n uoq4*eircuit?

  A toaster is rated 80041owmtrv- 2rcyv1x2 90rw ojq W at 120 V. What is the resistance of its heating elementromw 0rqvytw2jx49 c o-1v 1r2?

  A 200-W resistor is ratesrvo z1 5,wc7jd at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is obx87d 6)oql nrated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If iq6/u n-io4w 5l8ffz kyt is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V:*w41+u:ur/jixtd ,ysmlkj9h y8v+k se 9i ur, what is its resistance?

  A 25-W soldering iron runs on 110 V. /p da2bycbw ag7/ j 2hp42kf/tWhat is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if e(mtxr* ;eog* j )niek*nergy costs;(io )nxjr *emtgk* *e $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 htm) 6;4xl yixiours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat enax5; 7any- riyergy is produce-a ain7xy y5;rd?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery stor1q,picek ub)a 9.exp5rdob g *v66r;he? 6,o1e9ae )5c i*q;rpuhbd krv.gx6 bp

  How much energy doesrq;df.9c m su) a 25-W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per ,kiiyc7 yo)f.day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annucyi. 7f,y )iokal cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hhz-p 0z mfj*k.0r 2dniours per day. If electricity costs 10 cents per0p* in.zdh z f2j0k-mr kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electricyyssl2+by 5z hjs,a*zc/ c5pj;y - .mbgx41pk bill included the cost of running 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 c/ys+ bhg5sky41psap czxmby.,2clyjj5*-;z ost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 ql(4yc;l(x; kcni+;6qts kr /3jlodfV 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%. (Assu t(ldro/;64 klnli xc(y;f;s j q+3ckqme 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 flows6.7mvj-s7qw)6ovb0wr: fkpg gir 0d n through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costlh2jzxif.k/ f .rl 9jo mdyz 5.)g)sc-s $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 curq1 cgbt;x zz)4rent xtbz 4czq;) g1does 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 fz+h8oo , /sx iu;3tw7ni5xbszlows isu7x,8b;wsio/zh+t3no 5x zthrough this device?

  A 500-W device is connected .j,78g ujidfc to a 120-V ac power source. What peak current flows through tj cdji.7g8,fuhis device?

  A 500-W device is connected to a 120-V ac power source. W 0b hwq: -w+m,bthx9wchat is the peak voltage acrob+wmqtcw :- h0,bxwh9ss this device?

  The diameter of a co rt 9g2pnnc;zt68tx8 h ;xg+ldpper wire is 0.081 inch. The maximum safe current 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 one68r tt;8xg 9n+;pgn zhl2xctd cubic centimeter of copper is $8.5 \times 10^{22}$.)