A device that produces electricity by transforming chemicalx/r y6bxd9see/i f:j3 energy into electrical r6 ij:xx /fb93ys ee/denergy is called a

  A car battery

  The total amount of charge that passes through a wire's fullc9e uwv+ll(65sfe gp+ cross section at any point per unit of time is referred pv+ 6 9 5gcelsl(u+fweto as

  The direction of convention current is taken to be the directi 8obqmmefsi.0rzh:/5 u2tuy bsv- :/eon that

  A coulomb per second is the same asmtwl* :uc,; te

  Car batteries are rat ,5+uteg:xpum6rd yx* ed in "amp-hours." This is a measure of their

  The resistance of a wire im5w4dg2aa nqy ,g/i e9s defined as

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

  The resistance of a wire :ngp)6m.q;zhyllv x.75 cev m is

  The resistivity of a wire depends c7 rb9i :)e1 ab;cp0fkme24uezrww k+on

  Which conducting material has the lowest ref le2sdfv t- (3,dk)yo /tvz6esistivity value?

  Consider two copper wires. One has twice the length of the other. How do pfmys, 6bp9s01o . (dv(di tspthe resistivities of these two wiripdvypspsbf dtoms9 1 (60(,.es compare?

  Consider two copper wires. One has twice the length of the other. How do 2. t.5d4ogqe rir8ej cthe resistances of these 54 2.igqr o.e djetrc8two wires compare?

  Consider two copper wires. One has twice the cross-sectional area of the( mq.z: fwn+i)mb5ydv other. How do the resistances ovz)m5+i(d f nmbwyq .:f these two wires compare?

  Consider two copper wires. One has twice the length and twice thtrtek4wfl(3 s 0r+9ale cross-sectional area of the other. How do thrklls( e 3t04rwft 9+ae resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what fa:cu(ggteq657vt) e a fctor does thg(uc ev6t : g5eaft7q)e resistance change?

  How much more resisth,n3zlbpr 41zm 3d1qzance does a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of the sar,n l3zh4 p1b1dz3z mqme material?

  The resistivity of most common metalb7ma x bx0sz:3s

  Negative temperature coefficients of resistigb(5reo jcsom43 7 s-dvity

  What is 1 W equivalent tpoig4t of6dp o03.;jb o?

  A kilowatt-hour is equivalent t5l0z)j5u yorpb tv r23o

  If the resistance in a constant voltage circuit is doubled, the power dissipat ydxyd1ez ;oyu)9: 7joed by thato)9 dyexu7d:jy ;1o yz circuit will

  If the voltage across a circuit of constant resistance is doublio b y3zo+y8,ced, the power dissipated by that circuit y,yo38 o+zi cbwill

  If the resistance in a circuit with constant current flowing is doubled, the pog q2i0c i0jz/44fbsex wer disbzi44c sxfi g0jq20/ esipated by that circuit will

  If the current flowing through a circuit of constant resistance is doubled, th,cgeu .y yah-u p28v+ze power dissipated by that circuitu-ahzpyge+vy . c8,2 u will

  During a power demand, the voltage output is reduced by 5.0%. By whl co rer8t;y8uwor. :f3 p4vy*at percentage is the p*f4 3rytc.8oorvlr:pu e;w 8 yower on a resistor affected?

  A current that is sinusoc78f14 ;o bw2cj cwyptidal with respect to time is referred to as

  Consider two copper wire( 50mmm2u/row uxi ghf;:+zyos each carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the:z;xgm/ (0 5uo2mumihf wyro+ smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very; *kv 5j,5i4jyqihe jh low temperatures are ;ejiv 5qhjj ky4,h*5i referred to as

  What current is flowing if 0.67wkj2*xj6;thp v (r(sm C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an e9gg3i/-5eebbklv u kr, l /cv3lectroplating apparatus in 2.0 min. What is the average g/ 9vel3ug5i vc,l-keb/k3 rbcurrent?

  How much charge must pass by a point in 10 s for the current to bhoa2oj)qrh f k3 - 2m(q0rw0w38juc qde 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 rm:1hk3jw/uu-jkym 6 b u42ih)gz ti(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 be f(wuxhz*b3k )0n m7eben left on for 10 min. What is the net nmn wf0h (7z*)uxb3ekbumber of electrons that have passed through the coffee maker?

  In an electroplating pr d iz;5:hre)kdocess, it is desired to deposit 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 sin;h:)z ek ird5dgly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A to flow thrs or 3)y 6hxw09he 9cjq.ilo(wough a resistance of 330 j ( x ewh0.ysql)io9o3 6hcw9rW?

  What is the voltage across a 5.0-W resistor if the current through it is 5.0 A?.+ tfo+clxqd3wl9k- ( (o eqbp8v/b,lbc7vr w

  A 4000-W resistor is wcxtnt 9z5/ 0y,dcko7connected across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its fznkd12ig-u qp d,6vx 0n+9idresistancez0-dvddq2f+ x i n6,n9u pgki1?

  A 12-V battery is connected to a 100-W resistor. How many electrons flow t 6dfsw)x*:g bydo2 ;/bjs mje7hrouge2x/;sbgmd 7*by6) :doj sjfwh the wire in
1.0 min?

  What is the resistance of 1.0 m copper wiruf *3ba )hu9eka:uc:de of diameter 0.40 inch? (The resistivity of copper isuea: )u :b adkufh*c93 $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.05eq1)f6fj*yaoky p )m cm in diameter and 45 m long, if the resistivity is )fpfokm6yqa1e y*)j5 $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resifqa o9mi2. 972zd5jaj 2(dq8bqutfsjstivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistiv j qjn(.n8 ids:nybo;:ity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 42o twm) e;+j6s jlz2as+ kux/w.0 m long, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gau73l/7qdk nx zage (the radius is 0.321 mm) nichrome wire if it is connez n377axdlqk /cted 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 of rectangular cross-section, 1.0 cm3e v-gbzs z.ejhuw.45 x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The rez ube4v5 s-3h.zw g.jesistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire h;p-lx vb4 t/rjas 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 2(xwe85yx w u5*onm *xudt1ef (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 a resioqx v0sc.bn1+ stance 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 platin9nqkq3(lvg ch ur46* oi5p;w;d c dsc8um 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 po0+amy;kf /jpvitk br08x (t;fint of indium. The resistance of th0(v0;tf y +i8/rk;mx tf jkpabe 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 +dfhzeeh muw079 0mx.an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current willxviw7(s 03kji+ s7q/+5plm) rs3 kcgr:m rijh it draw?

  A 150-W light bulb running on 110 V draws how3m,zdzeit i+ux6/g 3r much current?

  What is the nominal resistance of a 100-W1 0 tegi;fp6eik ,b/kh light bulb designed to be used in a 120-V cip ike0,kf h6ig ;tb1e/rcuit?

  A toaster is rated 800 W at 120 V. Whan o+ke ;jsv12mt is the resistance of its heating elementkj2s+vmeno; 1?

  A 200-W resistor is rated t9o 339arbc, 08nu rq xot+yujat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rat y/wxk(d xcc g3t-ke))ed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it xs3+w(,a-ya u, sj5se f swv6wis used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, wh*x+2 gu7pc *sls crrz(at is its resistance?

  A 25-W soldering iron runs on 110 V. Whki a5i.g.zx yn/+qyx* at is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, f3 pl;23lg*u6 brhjeqif energy 6g2b*l3p urflh jq3 ;ecosts $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hours.i fgc fj:hz;h(4 y3jh?

  A 1500-W heater is connected to a 120-V line for 2.0 fv9oi9r;ese+ yf dge78 5q+b hhours. How much heat energy is prody++ go e9e8fv siqb75 he;r9dfuced?

  A battery is rated at 12 V pktlt cvw3xd atk/2032e(lu) and 160 A-h. How much energy does the battery store?up t/x3vkd t2 0l3c2)ka(wetl

  How much energy does a 25-W soldering iroki: *nkm,-:cdy- vuz gpq6x q s6tj.k5n use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per da .o o+io,czx8gj4jqc d35a2 tay. Assuming the power company charges 10 cents for i 2ca ojzac4dqo+.t3jo,gx85each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitorpbr dfgypv4 p- 7l0*p,) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much dp -4*dyg,vplbpf p0r 7oes it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a centragii;-7s5f foa o5-k +-gnxnvr *cbn;ul 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 the monthly electric bill if electricity cost +ig u;vn inbs;oogxa- f7-nfc5* 5rk-s 8.0 cents per kWh?

  The heating element in an electric drier operates oceheqbm71 od2ct.;stkvz+ojltr6 *(sff 2 3)n 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 o czqf(f m1+cl; ktjt*b6ee3 .2 7hvrsotd2o )sn its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows throu /c bigk r(.3kw27giixn6s .gcgh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costg,-dmtj0u0b1w ky+ lpdhct . :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 worzw /*c8uzvkqg p 1(,rfjjr3 s80*mnsik at the rate of 2.0 hp has 60% efficiency. How much current does it draw f*r v(guw,8 zk ssim0q3cp fr/*zn18jj rom a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms curx;d suorkbuo-9s 9;; orent flows through th; ouo;kbdo sr -;sx9u9is device?

  A 500-W device is coge +haw os15)gnnected to a 120-V ac power source. What peak current flows througw+eho 5 )1ggash this device?

  A 500-W device is connected to a 120-V ac power source. What is the peak voltagyx oqi6fys 2hv2y66l46lm *f ie as62v6qyxmof* 6il2yf64 iyl h cross this device?

  The diameter of a copper wire iw-g,q)n z3j u d jrn26ik)njp6s 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 th nnw nku6-i6qz r)3pj)d jjg2,e drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)