A device that produces electricity by transforming chemical energy into e6ad3okiq*bt- j -avf)+atub) lectrical +ija tv -kdb))-q3*o6ufabat energy is called a

  A car battery

  The total amount of charge that passes through a wire's fxpsnk(((tz- c ull cross section at any point(tx( k (scznp- per unit of time is referred to as

  The direction of convention current is taken to be the direuqjjhvc9is e5jb93 u(bi8w ) 3ction that

  A coulomb per second is fnd6 /vjj2)k3 9n5co k3ysc ikthe same as

  Car batteries are rated in "amp-hours." p;hr ivu7*p*s This is a measure of their

  The resistance of a wire is defined *1iu 6 ywge ihe) o6wx+4al6wfas

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

  The resistance of a wire p6i/mdf v0t7oi :ynp4is

  The resistivity of a wire dks*-6ym by0bto 0i:li e/+e,6hjxbei epends on

  Which conducting material has the lowest resistivity vav *n 0ye2ihgvv i1q +4zu(wq1clue?

  Consider two copper wires. One ua6;m zffnjqw, e2fq7b2 z;4 ahas twice the length of the other. How do the resistivities of these twzj;u27qmnfaz q f42awe 6;,fbo wires compare?

  Consider two copper wi u.yutht-,6yrz,(u2h k hxm76 05j2vf ywifmrres. One has twice the length of the other. How do the resistances o0uy2ut uvh i6y7mkr ,fhf2-,tyw65(jmhz. x rf these two wires compare?

  Consider two copper wires* 5fhlf owio k0*z8/rm. One has twice the cross-sectional area of the other. How do the resistances of w /k*of*mr hi z8lof50these two wires compare?

  Consider two copper wires. One has twice the length and twice th4 ut.35yah 5fyueb,ax e cross-section 5 a5t.hube,34yuaxyfal area of the other. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factorvlmzm:..u (xqjtx j73 does 3uqvxl:7( jtx.mjz m.the resistance change?

  How much more resistance does a 1.0 cm diameter rod ha6gnc1fr6 p9 jaz(exb*ve compared to a 2.0 cm dia9az6f* bpe 1g6cx(nrjmeter rod of the same length and made of the same material?

  The resistivity of m; w2v pr10 o8p3lofm1t.ifdubost common metals

  Negative temperature coefficien-i n ib4jld2 -4moaxzas(c )5kts of resistivity

  What is 1 W equivalent to?kkhzfhqxr3d(h k06lt: w x7ao(5bn. pkx8 .j-

  A kilowatt-hour is equivalent ;4 j2sbqwa6 1lj;d(xon3xf 0 wc/kolho*g 5td to

  If the resistance in a constant voltage circuit is dliur m/qs ;*mh6x 8bl9oubled, the power dissipated by thal6s/m 9umx; 8q bhl*rit circuit will

  If the voltage across a circuit of constant resistm0 ms04iu g6di;u:svcc2/ yxyance is doubled, the power dissipated by that6 / 0mxsmiu42svgc yiycu:0;d circuit will

  If the resistance in a circuit with constant /0 bjmk lps/c)-v4 dz4oxet)lcurrent flowing is doubled, the power dissipated by tkx44)0tm ple-v/dsj z)/c blo hat circuit will

  If the current flowing through a circuit of constant25v 7b:2hfg/hpd agfc resistance is doubled, the power dissipated by th5fgbdp7c / hg2a2f h:vat circuit will

  During a power demand, the voltage output is reduced by 5.045q.qn4 k,h lsjv(su (9 vnoetm +koljgv+h5;%. By what percentage is thv n,olss+h9 kk5(4l4+q gujvevto5.;(jq mhne power on a resistor affected?

  A current that is sinusoidal with respect to time is referrp gtnhv(v xl6 3.;zxp8ed to as

  Consider two copper wires each carrying a current 0/*rat kj1y1)pjvxys6j y dc3 of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in th3txj 0d*yjsya)r1j1ky 6 p /cve smaller diameter wire to that in the larger diameter wire is

  Materials in which the resism-ueofm2 wd1n)gi l p ymvo95e7hf-.2tivity becomes essentially zero at very low temperatures are refuhy1m n.7l 59mefv dg fpeoim)-ow2-2erred to as

  What current is flowid cg+w3(js1tty f/- xmng if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electrop cqf2uea c/ hi0onnz2l604;rklating apparatus in 2.0 min. What is zu6 q 40;kf2o 0lc/2anhnr ciethe average current?

  How much charge must pass by a point in 10 s for the current to be 0.50uxpvy4gwszm -n)yxf o(62 5p,y7v xn, A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowvk ,tse ub9w) *jey6)ck(owr(ing 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 As g26ehzjinpr,rl 0pf9ei 1 2, of current, has been left on for 10 min. What is the net number of electrons thl,f0eri ,npzepgs16 2hj2r i9at have passed through the coffee maker?

  In an electroplating process, it is desired to .lwc;*g) ovh ldeposit 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 *lh.gclw ;o v)much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4vp:)wxtb q 1fp5 v97fa.00 A to flow through a resistance of 3x9wb :5 1taf7pqp )vfv30 W?

  What is the voltage across a 5.0-W resistor if the current through it is 5.0 x7cngad0 ke iq)mvf/in129 g9 A?

  A 4000-W resistor is connected across 220 V. Wha,n :b)b n,(3 vk49el jwrlooplt current will flow?

  A light bulb operating at 110 V draws 1.40 A of cp 1 nv(r*evyy0urrent. What is its resistance e(*vr0y1yv pn?

  A 12-V battery is connected to a 100-W resistor. How many electr hzt v766p*lmxons flow through the wire 76xpl 6 h*tzvmin
1.0 min?

  What is the resistance of 1.0 m copper r+tgqrt f y+e ;tw:,:twire of diameter 0.40 inch? (The resistivity of coppe:qtwt y;r:ft rget+, +r is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in ivv0pd9v5c 1u58us ei 3xvin:diameter and 45 m long, if the resistivity id1in3805p x9uvvuevvi:s ci 5s $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper pykt8h 0e,up9 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 (r- 3 ahofyv(qp1esistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 itsp z 6* lcsq0*ckr.cjj8 resistivity?

  Calculate the current through a 10.0-m longvy*5 3nx 5ynibvr38d l 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity oxy n53*nir8d53b l vyvf nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of re, (jtxzy 5d4q wfsvhfhe3y*+2 ctangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivit( h45 wehysf+y 2qvdj, *x3ztfy 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 a resistivi)),7+or rkatq;mrct kty 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 coppem bp+i*m22/*x m2ojtvmjnk;w r wire (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 resistanl6; c p nej+fgk3(7 ebqlvm8p9ce 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 plati5le b0y7 na5jsnum 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 th+be6ptp2exm ds/h .-q e melting point of indium. The resistance of the platinum wis6edpqxm/ b.t-h 2p+ere 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 an mv xfe+q3smre5u (),b $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will it6+fy2k rb4)bcg hzrz : draw?

  A 150-W light bulb ref/; y6lt1rdo unning on 110 V draws how much current?

  What is the nominal resistance of a 1ge6 )hvs+0rkegmma (h0;y2u r00-W light bulb designed to be used in a 120-V circuik) 6hy v0asg r+h0m2m ee;g(rut?

  A toaster is rated 800 W at 120 V. What is the resistance of its heating elem3lmm w8)-g7 cwpq:;gb upapj(entu jmqg;p)abp7pl:-3gmw cw 8(?

  A 200-W resistor is ratedczk,py 2yl7 b, at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is gglu4 -xwkc (2t0ql *vk6l7 frrated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If iotxylo1 .bka 6 ,,kd4qd3ab 6vt is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resiscubk:- sn57 datance?

  A 25-W soldering iron runs on 1b; ,dmwkq*vqw 6.b r*nc*jva110 V. What is its resistance?

  How much does it cost to op8 j17g7jbg m uyy+pyi c87l:rkerate a 25-W soldering iron for 8.0 hours, if energy cost:1 8cguyk7p87y mgjj+b7ilyr s $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 houre+nj,o4 x +dbukl w0t-s?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much hemg xq8 -rstx.6m(d4 meat energy idm6tm -ex4g.s q (8mxrs produced?

  A battery is rated at 12 V and 160 A sw+qjn/z44zu6 1 xchhu2upw5 -h. How much energy does the battery store?q 21+4uwjnh uw/szzu4xp6 5hc

  How much energy does a x6hg(u24km gzr y 5o8fp4twht j61;ez25-W soldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per dqfn.k btz6x,ql2s lx*s6 7t -yay. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cox.stqfl sb6q 6*,kn7 lt-y2x zst to operate the bulb.

  A 400-W computer (computer plus monitor) is turne1c548oo0 f kg1gk k qjvk.ot:td on 8.0 hours per day. If electricity costs 10 cents cq k15ok8g1kt4 jgtk f0v:.o oper kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of runningr hp7ik )94,z wwyy;swz) xsv9 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 thew zwp9h)9s,)v ryxsk4 ; yiz7w cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generates h f dd 04h v)oskq18d01lyzgtm:eat 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 the repair have on the power diss41hslgmdd t 01zov:d)k80y qfipated in the heating element?

  14 A of current flows through:/v usyfg *.kh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs b 460dpmv) o0lc;j qlo$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 worka 9 gf2hvgkvkki8+/6b0+qb lx at the rate of 2.0 hp has 60% efficiency. How much current does it dravk +h9k 0x kgb82l+qvafbgi/6 w from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connehe:6hkc, l4efi z 9a,ccted to a 120-V ac power source. What rms current flows thr h,ha9k:l,icce z64f eough this device?

  A 500-W device is connected to a 120-V ac power so7a fpccubhe8 w1 :(nr-urce. What peak current flows through this ac ruw71 ne(hfcp: -8bdevice?

  A 500-W device is connected to a 120-V ac pw9,o8 oa k qol61dvrhn u3*ac3ower source. What is the peak voltage across this devi qoc9dk1vo,w833ah a6n *rluo ce?

  The diameter of a copper wire is 0.081 inch. The maximum safe current m. kzi/3o ctwg67:gsj it can carry (in order to prevent fire danger in building construction) is 20 A. At this cj/i 6 .z:sgg3wm7k tocurrent, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)