A device that produces electricity by transforming chemical energy into elec vmo3m+- 32qjt9 vabsltrical energy istj2m lbm-ov+3a v39qs called a

  A car battery

  The total amount of charge that pex-h8wii: vjxe/ ud 78asses through a wire's full cross section at any point per unit of time is x 8d w/7ehu:8vi-ejxireferred to as

  The direction of conven43hvf( mc *i)tdb .suwtion current is taken to be the direction that

  A coulomb per second is tuukyk e+ gm:;uxz, 5i:he same as

  Car batteries are rated in "a.+h bwe)q ofsp7z(bui/e1b+cmp-hours." This is a measure of their

  The resistance of a wire is gh 1q,l-.fzwhm* pcfo joxtd67(u z42defined as

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

  The resistance of a w ksb.*:(krfo7 my-k)u qg yzd9ire is

  The resistivity of a wire depen*oxgzbde*5vlvq . d98ds on

  Which conducting material hasn visgwv 7;wewu-: l1ent : -5z,em9chql-w4 k the lowest resistivity value?

  Consider two copper wires. One has twice the length of the other. How do the + nn/p2gbgjszwu ctdyq )qxg*7 ,/sw/ ,je/t. resisti/tw +egd2uzgq ,/qssx/j 7nty./ *, gwnbp cj)vities of these two wires compare?

  Consider two copper wires. One has:yq j 5k3l:,dpdfqwz 8 twice the length of the other. How do the resistances of these two wiresk,8:p: zdd3wyf5ql jq compare?

  Consider two copper wires. One has twice the cross-sectional area of the other ncse7t+5zcg-jig,p5 . How do the resistances of these two wires comparc, +pjggtn5 zsi 7e5-ce?

  Consider two copper wires. One has twice the length and tb jas( 9b-nhu)wice the cross-sectional area of the other. How do the resistancebs( h 9-ajnb)us of these two wires compare?

  The length of a wire is doubled and the ra dl(.mk ;rzr/wdius is doubled. By what factor does (;rdmrz /.lwkthe resistance change?

  How much more resistance does a 1.0 cm kw942m txoh,idiameter rod have compared to a 2.0 cm diam4htom x29w, kieter rod of the same length and made of the same material?

  The resistivity of most commjxz s f)tta.yk* qe 2)55z6taam s3/xmon metals

  Negative temperature coefficients of resistiz qr 50lst xhsk/yl2; 539eto0yyle5g vity

  What is 1 W equivalent h)oi s 71gs0:e4,ph *1n0ofvv reaoutto?

  A kilowatt-hour is equivalen;a(j0co(sd /*i gavdyt to

  If the resistance in a constant voltage circuit is doubled, tetf 4z oh*6m5rhe power dissipated by that circuit wi zhr46e mot*5fll

  If the voltage across a circuit of constant resistanchotpz0s63 k0ou.tu 0oe is doubled, the power dissipo 3 p.ou0thuo0sk z0t6ated by that circuit will

  If the resistance in a circuit with constant current flowing is dj-1s1atov :ebf8 / qxjoubled, the power dissipated by that cir1v1j:q/xaf -bs8oj etcuit will

  If the current flowing through a circuit of constant resistance is doubled, t1doh.j8zf;p c:mvg(n he power dissipated by that circuit w:.f(noh1pg8 ; cvzm djill

  During a power demand bvy6q)*l8- svz/tets, the voltage output is reduced by 5.0%. By what percentage is the power on a resistov6stq-z8v lb/ s *e)ytr affected?

  A current that is sinusoidal with respect to timbf ywq/vv9st*/i59 k d 7wob:ze is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wirg7a g3x( 4i7 -ebsqzpee has twice thzexei3(a-74g gqs 7pb e diameter 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 becomes essentially zero at very low xp q 08evaj4s v26pj,1yeorp*temperatures are referred t1*y p2e jxerqv pa,s648jvp0oo as

  What current is flowing if 8pf:z pa bfh;)0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 m5g z5 u bxc8/rvn1dj4ps3- qfain. What is the avsv/1 cqu xfb5 r-3z48jnp5 dagerage current?

  How much charge must pass b8rkpd2dh 1s4-ij /joqy 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 flowingf +yylyma.x( , 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 cuof .v7u( 0wjzpgeh02 grrent, has been left on for 10 min. What is the net number of ge(gf0o2 7 zhjw0 pvu.electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on a mee:));(nt+k / d; glu) wzaab8( tqqix edhp:bbtal part by using a current of 2x )+lb/ag)dtz8t n) hud:bqeb; q ;ei:aw ((pk.0 A. How long must 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 flowc*t xor kfn*2v)k2x/b8- mmwh through a resistance of 330 W?2km8wh*2c kxb/ )tv-nxof mr*

  What is the voltage a sctnv/v l: 2)m iqx( 1k* d2;mpu-watkj1eo;rcross a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What curren mot07rj,2 pg aze kv;unb28i,t will flow?

  A light bulb operating at 110 V07v v3k zx /lrhxal+y) draws 1.40 A of current. What is its resistancevxkr+h ayl z70 3/vl)x?

  A 12-V battery is connected to a 100-W resistorut50)lw4w zldxk 3qr)bc ,kf.. How many electrons flow through tl3lr,0) )4.z qwx u bkfktcd5whe wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The resu- 0;djsx.sycp6 *mppistivity of copper is 0c6*yp;u jpdxsmp-.s $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in doi+ q,i a+ze;0rgl1djiameter and 45 m long, if thrao+;zqjl + 01eid g,ie resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivitye f))wc.auw 3k $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper whgx k2iw8j.3 mzy5+l iire (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 o7rkqq )4 jeg5*gbhsm 9hms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0dzkftb,i huv3k jzs9b,((*s 3.321 mm) nichrome wire if it is conne s ,it9vkhfd,zj(3*ksb3 b(uzcted to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 erh7c6utsz:-is en,v7lz; n1cm long and of rectangular cross-section, 1.0 cm x 2.0 cm. Wh6hlcze;z,nt -vreiu7s 7sn:1 at 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 wire has a radius of 0.50 mm and 1qmi*:d)3tr qt btd ;ca 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 (re sg-zej)mh4n+) *kucy sistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a res 3 iaem1k/v7 of bea1 n62r3q9zunvg,eistance 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 isvv5hsgm;5( rr $3.9 \times 10^{-3} /^{\circ}C$. 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 dethj. :5d ilmf1drtn /bxme9j8-ermine the melting point of indium. The resistance of ./ndm5xl:r1bfe tijhj8d-m 9 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 throug(a1ismwhw: -0l q q.5 +mhxkivh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. u :7jcyuwieb)6d 7vax5m g6jf.wm89vfo q+i . What current will it draw?

  A 150-W light bulb running on 110 V draws how jm;z-ejm r c(/much current?

  What is the nominal resistaiqoch r3 c9b5n8+lbn +nce of a 100-W light bulb designed to be used in a 120-V cirnlb+coqb9 83inh+5cr cuit?

  A toaster is rated 800 W at 120 V. What7 qwjhmi4 0.yj is the resistance of its heating elemenyji0 jhm47.w qt?

  A 200-W resistor is rated 2ju h +j8+o njjq+q+etat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rateuei/o 9 hpi2x5d at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If ixasw0p1s u( u2t is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. lsa lxag ;5p)(m8d, fk) 0lgxt If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. Wq)h)i bvy;gp*9md7v p;ue;za hat is its resistance?

  How much does it cost to operate a 25-W so2mw6k- a3asyv+m 6kwz ldering iron for 8.0 hours, if energy cosmz+akwk-32sm6ay 6wv ts $0.08/kWh?

  How much energy does a 100-W light bulb use ;pn n .sr,ugj,su (iw/in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How mhlhq+0)7l2f) bosbdnbr +5kvuch heat energy is produc5nkbh qhd+)b7vr 2ll) b0+fsoed?

  A battery is rated at 12 V and 160 A-h. How much energy does h- u 6zgj.;kfteum ):qthe battery store?f u)-m ; .:q6kjzgeuht

  How much energy does a 25-W soldering mst49mp cik64. n-fsr3peat+iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power company c*ed-qztv fs5 1jfma3u 8r:n8charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cosd:t1v3 f*saqf j8mz8cu-5nre t to operate the bulb.

  A 400-W computer (computer 0ph ftc2a+*vzxsr e9;plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents perzxr+c *f2pasv0 ;th9e kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included thendf63xl q. 4ve cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connectio36v nxd4ql.fe n 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 a8,74 q8uk-cagldh69wrybtc k n 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 wire will depend on its temperature.) What effect will thec wk8 qr c4yhtu-d76k8,balg9 repair have on the power dissipated in the heating element?

  14 A of current flows taf w z2zhmn8wej )6, (:a(wljmhrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost qe .fs51-to5ejgrfj7s $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 ow(.yr 7poev5qf 2.0 hp has 60% efficiency. How much current does it draw from a 120-(v 5wy7rep oq.V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power vttzjb1t qh3l xy34v4;m o 2 9pn.:wt ez-dpm(source. What rms current flows throup1hzqz.2t 3: twb jto p43xmtly(9;de v-nm4vgh this device?

  A 500-W device is connectz qf es 4:hcd0w5.ua*ped to a 120-V ac power source. What peak current flows through this dev5z4 efu:*d h0asqw .pcice?

  A 500-W device is connected to a 120-V ac power source. 57vf rrl6cia ry.a5ljw (vf *;What is the peak voltage across j l(r y ra6*ac fvl.5fi;wv75rthis device?

  The diameter of a copper wire is 0.081 inch. Th6.p2;ulxa2 it4ywtr be 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 2u ia w4 lrp.6;xy2bttnumber of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)