A device that produces electricity by transforming chemical energy into elect:np/tm)0 z ky8q,jszvrical energy is 8q n0v:zk)/tpm,ysjz called a

  A car battery

  The total amount of charge that passes throughebbs r6wo12 s4q;2gj;o rv4 sc.,glwl a wire's full cross section at any point per unit of time is referred to ogo2s2eqr s v14sr4 ,;bgllwj6.;cb was

  The direction of convent.7 fv ,9p4qjxdlacxd0ion current is taken to be the direction that

  A coulomb per secondv7x4 w h2(bofxarq 3r+ is the same as

  Car batteries are rated in "amp-hours." This is a measu fil ,do)m z4es8.ij4a2l 1f:nk)bwwo re of their

  The resistance of a wir 8r+qn1k q0 krnp;kyw5e is defined as

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

  The resistance of a wirer ckim8 b-e9f6 is

  The resistivity of abar,u mt23gl yl9 k9w: wire depends on

  Which conducting material has dyp43c ljaya +4 6fy vv9kqa6e7z+4y t8y5ddh the lowest resistivity value?

  Consider two copper wires. One has twice the lent1 *33kkrson /nwzn ert4j*fpy-3/qrgth of the other. How do the resistivities of these two wires co33jzk3/ f4ortrky/ew*n-pr1ns tn q* mpare?

  Consider two copper wires. One has twice r9+ spma +s3clet,klb1mcr b;b2jjomi w ;-0 :the length of the other. How do the re+ w,-spetoclj m a09jbmmc; 3+r:lb;rb12isksistances of these two wires compare?

  Consider two copper wires. One has twice the cr4vvvc:45 uv g)7s2lu1filmv vfp4 *owoss-sectional area of the other. How do the rev4vf:2 u 1w)s uvo4v7vlicgmfp* lv 45sistances of these two wires compare?

  Consider two copper wires. One has twice the )x g;zw 63qfl )4eva9kd+mcf9p osn7glength and twice the cross-sectional ;ql vd)69an) x pwg793 o4fzekf gms+carea 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 o5mkak+vu/ r xj)0 ml,9h7pn),tt mjifactor does the resistancepkj))nht 95 jrv07/mi+o,u ,amlmxtk change?

  How much more resistance does a 1. nb9+dmehf05 6 ; yfvgomxd4a10 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of the same materi 40+o mm6 h1fy;agxdvn5ebf9dal?

  The resistivity of most common metalg2f+6xm*c kq,bt :c gj5l wuw,ilrvx 1tah356 s

  Negative temperature coeffici qa:a ba,8)ncm e:gm6hents of resistivity

  What is 1 W equivalent tz): htp z0oh1h.sbyer r d9v:*o?

  A kilowatt-hour is equivalent tnt,lddt9b6/e o

  If the resistance in a constant vol8mtxl hz wp)(f95s .gftage circuit is doubled, the power dissipated by that cls f)hpw985z m(txfg. ircuit will

  If the voltage across a circuit of constant resistan/kp7fxut* 6x1/vqkse ce is doubled, the power dissipated s/fv6xpuk1ex7k *q t /by that circuit will

  If the resistance in a circuit with constant current flowing is dveqm7vmt*7 h 7oubled, the power dissipated by that circu h 7t7emvqm*7vit will

  If the current flowing through a circuit of constant resistance is douw.:e mt8f)g5giyi*h99 35b h v omdukxbled, the power dix :yk8w.d gomfhiu9i 9tmbh g55e*)v3 ssipated by that circuit will

  During a power demand, the voltagk(z7+pf lu )mge output is reduced by 5.0%. By what percentage is tk(+ gzu)l 7pmfhe power on a resistor affected?

  A current that is sixphd pn t*/xb/k 5qu-;do/pzd4 f o/8rnusoidal with respect to time is referred to as

  Consider two copper w( .bk36:xavu*od li moires each carrying a current of 3.0 A. One wire has twice the diameter of the other. The 6oox.dkla:*m3b (vui ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the re 1s514n6;bdobxbnl du ;5zdsq sistivity becomes essentially zero at very low temperatud4 s;5l6xo b5qbnsb1zd ud ;1nres are referred to as

  What current is flowing if 0.67 C of charge pass a point in 0k5x v*bsl8p ;a.30 s?

  A charge of 12 C passes throug5 kxny q/-n 81e6pqwoth an electroplating apparatus in 2.0 min. What is the nk1wxqqo-/6ypen58 taverage current?

  How much charge must pass by a point in 1yecjquna5kh8p.1h,tmk9 aejf 6- (h *0 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 flowin6i;px+3 t7dkbtz 0 8j:eh9dh0 htchlvg 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 currer1u8asfz.zb z ;z)+w lnt, has been left on for 10 min. What is the net number of electrons that have passed;arf1 8.l u+zsw zzbz) through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of sill6b7/f8fpo9q 3 qbtk bver on a metal part by using a current of 2.0 A. How long must the current be allowed to run to deposit this 6lt 7f8 k fb9pb/oqqb3much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential differenc+7ruqh p aon2kyp6: -ke is required to cause 4.00 A to flow through a resistance of 330 Wq+h -6rau:k2 y7pnokp ?

  What is the voltage across a 5.0-W t.uz /e cv2.zvresistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current wil7bc ) 2jmfmiw(jag.o7 l flow?

  A light bulb operating at 110 V draws 1.40 A of curr2q*r:ni t11 ;dj wgjfeent. What is its resistance d21wf;jqn* etijg1:r?

  A 12-V battery is connected to a 100-W resisteldgpy3 0y3d/or. How many electrons flow through the wire in0ygd3/p3 edy l
1.0 min?

  What is the resistan pqj90*sk4ob ua +mp)yce of 1.0 m copper wire of diameter 0.40 inch? (The resistivity of copper issj ub)04map +*9pyqk o $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in u zcx be b 9)ia-/jpcnrpq)7:top3m7+diameter and 45 m long, if the-/ tc:qpu mb)e3jibn+x)79p ap rc7zo resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resist ehfn.v9md p2)ivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wiro t-yu.kq-jq5 ezz+0oe (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 0.04w)fhv p 98dj:w0 ohms. What is its resistivity?

  Calculate the current t. u m1fke,+kg*fnj v:nhrough a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivv u*1e g,kjknn.+f:fm ity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.:v1u4.vlnbpl 0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivity of 1.pnbvluv4l: copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire a0 fz: 23dg. lgf 7t mbnt8qx5v6d;gocgs(;tchas 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 (resistivispogi7kh0asa 9/ s1a8ty $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a rxn;wvf6j0 of *esistance 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 resistiviyad5i9x.ysc)3nul8oppv8 3ne w c+ e.ty 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 melting point of indium. The resistf ,fpr, :wd5cvancp wv5:d,crf,f e 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 throught9ssor5. m2sayu( o1rjdg/ g0 an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 12hj45oxpn f82/ jvv lf/00 W. What current will it draw?

  A 150-W light bulb runningfh sfah9eq+d5 7-yg ;k on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb ca87*h jafc; r0 ..yh9sl)fgfxgaa,jdesigned to be used in a 120-V circuitr8gyfc,.a.)7 a fcsf 9h0g a*hjjxa ;l?

  A toaster is rated 800 W a 8m/pu(.3jgz u9 ziwnat 120 V. What is the resistance of its heating elemen zj8/uiag(muzn 3pw9 .t?

  A 200-W resistor is rated va*4kk:9* s mp2ois)0guip1zf a4gpw at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated ldr ,9vi2wy3.z/tk; j hk/wvgz+fru9at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, w kl/c2oxer y71hat current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its rc 6;bn2w-+ 8ke,zp flxyx7cn +j/mksj4i.z woesistance?

  A 25-W soldering iron runs on 110 V.b :xp i0zc(w7k lgr8 n 03fpe-ve-/hky What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, i, cc;kbispo x0(/3nnvf energy costb x3/p,n is ;0ok(ccvns $0.08/kWh?

  How much energy does a 100-W light bulb u2pk tl6r)ty7lse in 8.0 hours?

  A 1500-W heater is connected to a 120-V line fok,wf dwu*/ /glr 2.0 hours. How much heat energy iufgk/,w*w dl/ s produced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery st bkk/d31/qftrss+h,u g ulht) 0 v:wl0ore?fstkr00k+ db )ltuv/w:ql/s 13,h guh

  How much energy does a 25-W soldering iron use in 8.0 x6xrqnr (4lf* o2p4li hours?

  A 100-W driveway light bulb is on 10 hours per day.cs7k.u9l y5mw4 zse k7oqnx*( Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, q*4(yk. 5ss men97x uzk7 woclestimate the annual cost to operate the bulb.

  A 400-W computer (co.vf+ (i.i*kcaf6qk qcmputer plus monitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to +q.v ia* i6(ff.kqc kcrun the computer annually?

  The monthly (30 days) electric bill included the cos,8 0l y8jdh6ier5elod t of running a central air-conditioning unit for 2.0 hr/day at 5000 W, aei hl0r 88d5e dl6,yjond 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 costs 8.0 cents per kWh?

  The heating element in an electric d+ seia 7z zde)vsgy0,.rier 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 the repair have on the power dissipated in the heating el+ges. d 7z)ys v0ei,azement?

  14 A of current flows throl z30r tqk7sy(ugh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs mh* iy,i/le8 h$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 cu*k fw xfkgcviy+k( (r258fyl6 rrent does it draw from a 12ikg5 8k(f yx6k(flc+rfvw *y2 0-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. Whanz u2hlh-9 oo64q/,u fhd9ymi t rms current flows throug9flou/9y,uq4 i h26h nmzod h-h this device?

  A 500-W device is connected to a 120-V ac power source. Wur lh(a0 8c9 qees2ogy+5-rwf hat peak current flows through this devir0y(e+ u-he92qg5 a clw ofsr8ce?

  A 500-W device is co6 6ridehn+2wb nnected to a 120-V ac power source. What is the peak voltage across this devicer6b2id6n +wh e?

  The diameter of a copper am5ar ve,kz4q 0+ouj.g.1xsu wire is 0.081 inch. The maximum safe current it can carry (in order to prevent fire da.rja15ea0uq s4m zu .kg+vox ,nger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)