A device that produces electricity by transforming chemical energy into svgpcy4w 4(:gelectrical energy4pg 4: (wcsvgy is called a

  A car battery

  The total amount of charge that passes throughvr w6/ r1/ 4b wwg13gjpxim8lr a wire's full cross section at any point per unit of time is r/ pi81j gw6g1rrml4bww vrx/3eferred to as

  The direction of convention current jjjb zcow .ujc : :jyb2sxh9w0ze /9/2is taken to be the direction that

  A coulomb per second is the same s 7zm9y-wb.t xonge 4429 ebyz s(bu6zas

  Car batteries are rated ipw i9vz(nlxpd 1xnlk1; df815n "amp-hours." This is a measure of their

  The resistance of a wire is defjs 91kd9o*5cyild wg4ined as

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

  The resistance of a ympx)3j2ys - z:kndkk/v 9wo9 wire is

  The resistivity of a wiy3pj ,cj.2uch7im k xpib,p6c9bz i *1re depends on

  Which conducting matw*58 ;rxll:ib4s8iy oyu9c qxerial has the lowest resistivity value?

  Consider two copper wires. One hasif c clah,xvb 1 1es/ya/a-uqrv)7 )/l twice the length of the other. How do the resistivufl)7ac1 a/ibv y-)/v x,s1c ael h/rqities of these two wires compare?

  Consider two copper wires. 9a++nl1*aucyf i7 zf k One has twice the length of the other. How do the resistances of t aczn79iklf*y++ a uf1hese two wires compare?

  Consider two copper wires. One has twice the cross-sectional area of 2 soxuafjng16-nn swc3x4r ,6the other. How do the resistances oognx613 wu62 ,-s rxfncjs4anf these two wires compare?

  Consider two copper w 4sqsuuwoug c6q6:5 5ea (ww gp1qni79ires. One has twice the length and twice the cross-sectional area of the other. How do the resw5uu4wq qs:p 796q51uwg s 6encig(aoistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factor dk6 t2x poheq-9oes the res oh- kq2e9t6pxistance change?

  How much more resistance does a 1.0 cm diameter rod have compared to a 2.0 c :;g(grzwv ,uff26yhe m diameter rod of the same length and made of the same m: ( wrgfgyf2zu;h6e,vaterial?

  The resistivity of most common metalhfk h* 9x*p6aktpl) (zs

  Negative temperature coefficients ) g:8ilosyoq,of resistivity

  What is 1 W equivalent nr 5k uc j1-9-ny9m9xitw:tjcg ms5,yto?

  A kilowatt-hour is equivalent to)yi0yq+yz5 9s+b xsyp

  If the resistance in a constant voltage circuit is 6kyx 5az -g/tazd gy;);2lttedoubled, the power dissipated by that circuit wi kaaex ;tt -zg)d/52z;ty6lygll

  If the voltage across a circuit of constant resistance ispox2p84; 7w*d ztd;7ll6/kcxj ji cf q doubled, the power dissipated byi d/l lpt6;8oc; qwjc*zf 4 j2xxp77dk that circuit will

  If the resistance in a circuit with constant current flowing is doubled, the atuxxkju)*k 3(i*i/y vs-8ob rt: a4dpower dissipated by that cirdk* kvo3x(t j-rxsab)4iua8u*: yt/ i cuit will

  If the current flowing through a circuit4jo;b.9 tays y of constant resistance is doubled, the powbt.y o yj9sa4;er dissipated by that circuit will

  During a power demand, the voltage output is reduced by 5s/7azmm0 6t d3. wacsr.0%. By what percentage is the power oswmt 0m7c /r.szaad6 3n a resistor affected?

  A current that is sinusoidal with respect to time is vmf dz1 wkjty7)3u(,2 mht dt5referred to as

  Consider two copper wires each carrying a current of 3.g03tffz3 p,kb 0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smallet3gbzff,k30 p r diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at vea3i4 fdq0grr9ry low temperatures 3arq9gf 40dri are referred to as

  What current is flowing if 0.67 C of c16waz f k v2hhyztoh. h0b6,y1harge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating ap q wx z*rofry+d6uo, /rz*9h*ne;:rsx paratus in 2.0 min. What is the average curren*oesrqo9;z *zfx 6xd u*:+n ryrh, rw/t?

  How much charge must pass by a point inc aizc87:fe0w 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 flowin2e4xppzkn5+haz*, w* svqq p)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 draws 13.5 A of current, has been left on for 1s5bie9c d b, wl(lgp1tf:gr+;0 min. What is thes:fi9 +(br l,5 getd;cbw1lpg net number of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to depc4p kl996lwt -0ax a ,qu4iothosit 40 mg of silver on a metal part by using a current of 2.0 A. How long m6c9 0l4 piwa,l o9uxk t4-haqtust 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 cause 4.00 A to flow through a resista2og38gofaw+92kciezky0pq * sq2zc ;nce of 33a 0opw3e;qqf*g c z2+s98kzk ogciy220 W?

  What is the voltage acrosy-d,rh/a h lxt.i s6 4s;sb;nvs a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current will flow?1.xxijcpf iu5f sy;pavbia1;lr+;. w(h s 50 a

  A light bulb operatingw0n jcf41gh6 du/es2j-rfe q. at 110 V draws 1.40 A of current. What is its resistancerqn/hudfe.sf 2614e0j -j cg w?

  A 12-V battery is connected to a 100-W rekxn-*4b(f k/i yfxe:u oq -6cssistor. How many electrons flow through thc nb/esf(uqkoy*ik x4 -: -fx6e wire in
1.0 min?

  What is the resistance of 1.0 m pf:t mpw0dbwtx;/, v9copper wire of diameter 0.40 inch? (The resistivity of copper is btptvd /:f0w; wxp,m 9$1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rodacve6m5 * 5ngd 1.0 cm in diameter and 45 m long, if the resistivitg*5eacd5vn6 my is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copperrr;7ux gcsz:q5;i (aflqj 88 l 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 (resistivit9xt:dr vifdswg c8; m3ou88c)y $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 resisti wq8ie x.-iivzcip02 .vity?

  Calculate the current through a 1zrpkvoj t bum/c p/u4*ekj uyn8o/8rv9);j*70.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connec;/kpz p/m*t8yuv7vk8 o)c9oj *bj r jre4unu/ted 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 tpd huml;rshu131(j -of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4 mut(d;jhu3pr1shl-1000 A? (The resistivity of 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 anev frl86z1*:-lo lacrd 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 (resistca. w+rf (jm5fivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor haso:56( aahr zycj4nkf; 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 coefficient of resistivity of platinum 2+ y; iyali v6;5 g/r/nse:jueypp i-eis $3.9 \times 10^{-3} /^{\circ}C$. 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 of indium. The re*0mc),di fj resistance)ri dmcj, 0ef* 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 thr,8ea 5ebxu,yu11 k mu)/vkcd;npgwo,-u t. zgough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. 4e )1k 9+*r9oojt y qthlr2yybvj):qlWhat current will it draw?

  A 150-W light bulb running on 116it f4 g, osud6g+ta*unj;a 9u0 V draws how much current?

  What is the nominal resistance of a 100-W light bulb 6+n en,ou-apy v.u- sqdesigned to be used in a 120-V circuitpas n.n6o ey+,--q uvu?

  A toaster is rated 800 W at 120 V. What is x*;fzwqk 7 fm*hg, eq0the resistance of its heating elemen;gf0*qz wqkmfe7* h ,xt?

  A 200-W resistor is ra 7zgp h.8kb9rrted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated lcn((i dz.49f2 5hmz 2ucfpdl at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, wha02aqgfkfx - -ut current does it draw?

  A lamp uses a 150-W bulb. a godgzk17 md *aieqs:118gj; If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its );3 bo rm)+e/vsd zzgzresistance?

  How much does it cost to opera wisl;eho9dv fy9, +6pte a 25-W soldering iron for 8.0 hours, if energy costs y6 p; 9so,fd9hw+vlei$0.08/kWh?

  How much energy does,ypdrwbr 1 3j v3 sl4).m8irhz a 100-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V c.;k2x3;jrql 7 g.4xeh ttp qaline for 2.0 hours. How much heat energy is produce7ql r42t q ca..;xx;ktjg3pe hd?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery stoe*wi,p/2 lzpz re?*zp2/ ,lwizp e

  How much energy does a 25-W soldering iron use :7nk qyd3(z*a clqn7vin 8.0 hours?

  A 100-W driveway light cr66 l3fl vf3qbulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour oqf36l3v cr f6lf 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.s* rp7y:l7vwf If elec7vpw 7s:ly*frtricity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the co 1roe u.7zo1glst 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 cost of th lgo.7zr uo1e1e monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generate39z hvhqd dv,g *cm4.ko*dnb: s 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 depend on its temperatkh v3hd*.*oz:g d, b cdn9v4qmure.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows throughlr pj,cwo:*y3 pi9s;s $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costse4*phs, az jvt6xe,o*j fjc7; $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 h*db .,as-tuxqas 60% efficiency. How much current does it draw from a 120-V linetxd * .s-uq,ab? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current flows 4. p0qjgfx q9vthrough th4xq9p j0g.qfvis device?

  A 500-W device is connected t2rp*brqt57jl9hca- bh-5 u v io a 120-V ac power source. What peak current flows t- 2bht-rpvih cl u*59rb7qaj 5hrough this device?

  A 500-W device is connected to a 120-V ac power source. What is the peak vod *a,vqk -d1qvltage1 q*a-vqd vkd, across this device?

  The diameter of a copper wir35:eglj 9 yzfc3uyu 91hx gpp;e 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 eleuj:e1; 5yzp9gf y9xugl3cp 3hctrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)