A device that produces electricity by u9jh5s pi t7t)transforming chemical energy into electrical energy ih u i)jptt7s95s called a

  A car battery

  The total amount of charge that passes through a wire's full8daisc4 vqwy35+h c)k cross section at any point per unitwc3+8cy vs hi5dqka)4 of time is referred to as

  The direction of convention current is taken to be 0m+dt.8q;phv2wv (-zqsf yos the direction that

  A coulomb per second is 3wdt9gdl 0k6g1o( a kb)gua:hthe same as

  Car batteries are rated in "amp-hour;13rbybuyh,ry 6s g7js." This is a measure of their

  The resistance of a wire7,p: zlbxa2-fiex yr3 is defined as

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

  The resistance of a wihg zj+voqusf56 k- *-kre is

  The resistivity of a wire depends o,rpd xy8sixi*my3k9,6c2+g v 1cgbx cn

  Which conducting material has the lowest resistivc;ne;wjkqu (y s-;;nz ity value?

  Consider two copper wires. One has twice the length of thyt,aif d0hmn5 6r8w)d e other. How do the resistivities of thesrd mfn,it 0865haw)dye two wires compare?

  Consider two copper wires. One has twice the length of the other. How do t 8vqfgjfaw;e40wo1*w7 z nj 8rhe resistances of these two wires comparw f 0*wfovw7q8 jrn;j81ze4ga e?

  Consider two copper wires. One has twice the crostnt+t*:5 rvd j b+ ,.eb9eihwms-sectional area of the other. How do the resistances of these twoew rj :v,+h.bi*+n9t mtdbte5 wires compare?

  Consider two copper wires. One has twice the length and twice the cross-secti ()/jw b- pj.mttxfc,jl.; hdoonal area of the other. How do the resistances ofxl ,c/w ;dt(omfjp j.jt )b.-h these two wires compare?

  The length of a wire is doubled and the radius is hf -:s pci/f03ar3qctdoubled. By what factor does the resis:frqa-3 s3tf/ 0ciphctance change?

  How much more resistance does a 1.0 cm diameter rod have compared 9g38f qw5 chgj 9xbaj:to a 2.0 cm diameter rod of the ag:xwfh 5j93qgbc 8 9jsame length and made of the same material?

  The resistivity of most com6ksn :hs talv 6ni,-j.mon metals

  Negative temperature coefficients of resistivpl,z6y e3r6+z zqj xbgkg 4-d6ity

  What is 1 W equivalenadz h:ioh+93s t to?

  A kilowatt-hour is equivalenp67ubz yavjp+q,c6sy:or4r-)qy +b lt to

  If the resistance in a co.+cplzuse * nmd lg2),nstant voltage circuit is doubled, the power dissipated by that cir )e *sg,lnl d+z2c.mpucuit will

  If the voltage across a circuit of constant resistance is doubled, the pc 7;ey)lwn+ab ower dissipated by that c 7wcaen)b;l+yircuit will

  If the resistance in a circuih,w mt4sa)/4*suxwutph ;z0nk)n.ch t with constant current flowing is doubled, the power dissipated by that circuit wills/0u4h k4,h xn*;wtwsac) pmu)nthz .

  If the current flowing through a circuit of constant resistance is doubled, yr e)b22zlm0w ppzsv)o76)tl the power dissipated by th 0 6 7 p2)zebwllytz2))pomvrsat circuit will

  During a power demand, the voltage output is reduced by 2xlai *1.;g0lj ,crtlxr/k nf 5.0%. By what percentage is the powi , r*afc1kntllrxx;l 2g0./jer on a resistor affected?

  A current that is sinusoidal with respec12 8m9q ljobyuj5kob.ems9o j(1w f,6ckmp 6dt to time is referred to as

  Consider two copper wires each carrying a current no(1 wpy a . g6*.goftd8y-kgrof 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wid.n*o6wg a-ptkgofyg 1 (y r.8re to that in the larger diameter wire is

  Materials in which the resistivity becomes essentialt * ,/s tunhs6rf)w8wgly zero at very low temperatures are g,srf8t6 tww*)ush/ nreferred to as

  What current is flowing if 0.67 C of charge pass a poib6g,ymxevt 7- nt in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. Wub7(+w 3vo7b6dno e pchat is the av(bb+d3ucoe7n6 pv 7o werage current?

  How much charge must pass by a point ibvp z4/jx9, wgi;2bmq n 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 flowingz hv(umv;: yd7-4yoo3xx* sc e 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, h wzqhlah s -;87(l9 e7oi9uxotas been left on for 10 min. What is the net number of electrons that have palx(huo7o97t a8 ;-sl9qwhzei ssed through the coffee maker?

  In an electroplating process, it is desired to ;2o f p/g a y(ltps/v)az5:nkideposit 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 s gv)a5iltnz p2ao:/y; /(kf psilver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00 A tj e 01jno rymgk/ mg2dd+2p42vo flow through a resistance of 330 W?vmn 241y 2k0g2pd egr djo/jm+

  What is the voltage across a 5.0-W resistor if thko.3 t6ng1 bvxe current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. What curren8/ydzr64 :hrtk b clv:t will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What ;ii)+y9p8 zau0zihrbis its resistance) h0ii9ua8p;+rz zybi?

  A 12-V battery is connected to a 100-W l zab:tje-hh- 5md5e0resistor. How many electrons flow through thhtdjlz5b h:-- 50a emee wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (v6)u+ 3 zv91swex)z tju4f9h 4 snniyyThe resistivityns 1itzu6fz94 jx)vu+vyn ws 94h3ye) of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistanl,;c csq jagjj( .n4x5ce of a circular rod 1.0 cm in diameter and 45 m long, if the resistinqx jc;a4 , (l5sgcj.jvity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resistivitmehys2)e qwox s6lzul2t lc+m8o -e3b916 2ety $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivity i ,lv,wb*fm v7b;hk+m 7/vtha$1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measures2d av7r ht84tn 0.040 ohms. What is its resistivity?

  Calculate the current thro ud u9m.sm) gpk+(+xpgugh 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 resistivity of gdx)9um+k sm g( up.+pnichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of 5:u(fic(c dyg6;) j7hf lucau rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivit 7;hgc:cliauy6 uc 5(du)ffj( y of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of c;ald333i pm7s fg.vc0.50 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 (resistivity gw,xy k 4n9owes/( 7 ru0g(buh$1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a;svpq 3 t4 591zcizxp .rnfn-z 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 resistiv51 ze u2ij1wa rjtvuo/ .68jjtity 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 us0dh 0b);puphafa3 by1(j:bih ed to determine the melting point of indium. The resistance of the platinum wire ishj0;)pybbhbu (f0ia p3ahd:1 $2.000 \; \Omega$ 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 throulk/ wt3m:d,e q zjo);ggh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. Wtl7jjs gmds ;by v.-,8hat current will it draw?

  A 150-W light bulb runn.fd2nde5ns lpv3pl 7,ing on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed t;6.bqt+v bzywg0r ba:o be used in a 120-V cigryb :q0az6;+v.btwbrcuit?

  A toaster is rated 800 W at 120 V. What is the resistance of it:2mwk l42yw ia)88n4/ miwy2x xojh tes heating element4y8t2h/j28wlikemmy ox)ax :n4i2ww ?

  A 200-W resistor is rated x9,c+u 6ma7 ffca5gfmat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is r5y c8 guimmt8mo5+6cxated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, wh)s7v t1zhgpan6f./( f5uwtexx*l( xuat current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its resistanc/ x x*jnhu2oafa wu:29e?

  A 25-W soldering iron runs on vmg 1xomge-0os mf006 110 V. What is its resistance?

  How much does it cost to operate a 25-W solderingnn:;g bi aeziul) 0d:5 iron for 8.0 hours, if energy costs gun )zdei:;lna:5b i0 $0.08/kWh?

  How much energy does a 100nrrhe3 gjc 2)9jedl+oe2b 4 k93mr,q m-W light bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V li m4bjykg / eg3* i36qg0ur of/f)qnz:yne for 2.0 hours. How much heat energy is produced// efzk y:3ryqfu gqmg0)o6 ijg3 n4*b?

  A battery is rated at 12 V and 160 A-h.nd ysj *hyvj5: /64y jvu*r+sl How much energy does the battery store?ujsy: s*y/h +l4njvdvrj 5*y6

  How much energy does a 25-W soldering iron use uw, i3ug lm59win 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the pootzian8 s5,-zwer company charges 10 cents for each kzt,z-s 5n8o aiilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is t*0s jz) kv pcj6ndl38durned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost to run the computer 6dk0 szn) vdc 8j*3ljpannually?

  The monthly (30 days) electric bill included eas f; (8fs (pltzmy rnm*8qhv b+25(bthe cost 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 the monthly electric bill ibr(8 2h q5 stmfze+lfbnm8vs(ayp ;(*f electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and g,k)c qv0r)89i vtsjrq)lyn)henerates 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 dissipak vv0,rl i9yj))ts )nq)rqhc8ted in the heating element?

  14 A of current flow9 alvz m(3 d2sbr:z5fxs through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsltrf10(f- s rr $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 wovk;*jl s:oc:ys v2+jm rk at the rate of 2.0 hp has 60% efficiency. How much current does it draw from a *slmsj:ojvk v y+c:2; 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. Whaga i allxax9 6y1v7(,it rms current flows through this dl6(vgaa9a7,x yl 1 iixevice?

  A 500-W device is connected to a 120-V ac power source. Whar*d )c10 +.ac*xwtug jk i)vqrt peak current flows through thxcdrq+g.w*0*kj)1c) v tuiar is device?

  A 500-W device is connected to a 120-V ac power source. What is the peak volta /4iuqfsfsux kt. s0za-7 ,;qq/m8a vzge acrf k7 az0-/fm ;8s4 . sqs,vqqt/zxiauuoss this device?

  The diameter of a copper wire is 0.081 inch. The lx ( lc+ wwhk,9xb .o2vm (e8*fjmgqa.maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this curremco 8.a(q2jg.*f xxlwk l v9,(+hm ebwnt, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)