A device that produces electricity by transforming chemical energq0xx 69.dxs e0 s:ixqy ;er.ddy into electrical energy is cal.r 9iq.y:s6sedx xd e0x;0 dqxled a

  A car battery

  The total amount of charge that passes through a wire's full cross se)b3ip:5 jpn(qk876emlaqzqgp .jh ; wction at any poib.3iw6el5q78 jm;jz)pphg p an: q (kqnt per unit of time is referred to as

  The direction of convention curreai3r jp 9u 0ixll939dgnt is taken to be the direction that

  A coulomb per second p :ifs+2 vla:0div4 gnis the same as

  Car batteries are rated in "amp-hours."clqc -;eatd9b/ w4fu rm)5 g/q This is a measure of their

  The resistance of a wog +-ix+ e5fwktpmy-5ire is defined as

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

  The resistance of a wire ie xxfo,r5iu uyayklj 3/4e1 -;s

  The resistivity of a wire dependczt6bg.bgb (oxwc,+fs q3u y.5e;yj* s on

  Which conducting material hapd4, ct ,b2lduzunb)e )t.f8x s the lowest resistivity value?

  Consider two copper wires. One has twicefy m4y j0lp5;.n,fkbb the length of the other. How do the resistivities of th; y04mn pky fbflj,b5.ese two wires compare?

  Consider two copper wires. One has ulfk weo/nq) 1c7ph) 8twice the length of the other. How do the resistances of heu 7)8lk pw1onf)c q/these two wires compare?

  Consider two copper wires. One has twice the cross-sectiona; v,a( oh8ba.(iih0c h1wtrjxe n28pamd5h u0 l area of the other. How do the resistances of these two wires comp,i1hrt(h(e0 m5o.0c8jauah8;d xa i 2vb whnpare?

  Consider two copper wires. One has tw,v+/sno)v e0tzmhn 4aice the length and twice the cross-sectional area of the othav/0en+s,m z )hvno4ter. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius/kzr i k*k9rr- is doubled. By what factor does the resiskr- kriz *r9/ktance change?

  How much more resistance does a 1.0 cm diameter rod hh9shxg u.1ghs. zp3 34o5hbx iave compared to a 2.0 cm diameter rod of the same length and made 3s9 5hhg xh..pzoug4i sbxh13 of the same material?

  The resistivity of most commonbwf qt7 h pi-ma;04tk: metals

  Negative temperature coefficients of resistivih)wu t+i+414exh;i buf)hs yety

  What is 1 W equivalen)mo f, nqz(toxf549 my,f8ozc( 5l/blk0ibsat to?

  A kilowatt-hour is eqd pd/i1ov5:c2e m .ioguivalent to

  If the resistance in a cons8-ybysm5 e rkyqw7f8 d+g)br9tant voltage circuit is doubled, the power dissipated by that + - y9f88rbyy)sqd7e5mkwgrb circuit will

  If the voltage across a circuit of constant resistance is doubled, the powegds0 t9w90kzx r dissipxt0099z ksgdwated by that circuit will

  If the resistance in a circuit with constant8va, * ( vjk/qtrb6tah current flowing is doubled, the power dissipated by that circuit wi(rbt /qkj*v 6vah,a t8ll

  If the current flowing through a circuit of constant r 1o1qi l+qud9t:x rcr)bqr r/:esistance is doubled, the power dissipated by rt9rb :ioq: rqrqx1+ ud/c)1lthat circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what percentagze9(6a8 p- g u6cvqofje is t6za p8ou-gevqjc f(69 he power on a resistor affected?

  A current that is sinusoidal;dir-( 7 ssxvq with respect to time is referred to as

  Consider two copper wires each carrying a curu gy3f1ft u80hglg+t4rent of 3.0 A. One wire has twice the diameter of the oth0 +t4g 8ufg3tfhuylg1 er. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the cv63 r*ysh. zxresistivity becomes essentially zero at very low temperatures arrszy6x.*hc v3 e referred to as

  What current is flowing if 0.67 C of charge pass a point in 0.q3tavp g70hk /hg 0fhey/xl1 d m,j*9q30 s?

  A charge of 12 C passes through an electroplating appay,m k6l5ca8y zratus in 2.0 min. What is the 6l ay8mkyc,5zaverage current?

  How much charge must pass by a point in 10 s for the current to4e eic0(lvmk dha0uj, :yg4pj/g7 zc8 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 flowik i/,u+xbx gk (zfrz10ng 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 been left on for 10 min. Whdb v413t;tyra at is the net number of electrons that have 4 va d13;trybtpassed through the coffee maker?

  In an electroplating process, it is desired to dep: e ctsuaxo,87x4 rxl2osit 40 mg of silver on a metal part by using a current of 2.0 A. How long must the current be allowexesc2x lox8t7 :ua4,rd 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 requm)h k.w k7capz..cyq) ired to cause 4.00 A to flow through a resistan)w.m kz yqcac.k.hp 7)ce of 330 W?

  What is the voltage across a 5.0-W resistor if the current through it is 5.0 A:0gia* 7gnhb u?

  A 4000-W resistor is connected across 220 V. What curreni b94kkf3hml1bv6zuhs :;7 bnt will flow?

  A light bulb operating at 110 V draws . p,j+ ;(rekos-wdiac1.40 A of current. What is its resistancekjw, r+(ciasodp e-. ;?

  A 12-V battery is connected to a 100 xy8 g* + 6pu7/rdy,cca6eekjw-W resistor. How many electrons flow through the /+6gpk6rweyx a8 *c7ecy,jd uwire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? p4qutpuo3k7k,isb aqbmxc;w:w. r.86 65o n m(The resistivity of copper tqw km, i7 p.bqo6r;cms.5:ukwbpno8a u6 43xis $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 nb od:h0k6)8 mn ( xcd5b9ub dwgkl7+ycm in diameter and 45 m long, if th8u7c: mb5h k9gd0 (odykwlnd)n6bx+ b e resistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire/zaauj zcj )/,v x5 o152ogksc (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 wi yj(4uojr8i)1 egp bh d;w c(;qz2obp-re (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, measu0lj5 +jv pwk;l4e .gahefvw8;res 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (th6/:p/gbt td:9q ,-jxsilzyn e e radius is 0.321 mm) nichrome wire if it is connected to azdtt6p l:g,iyn/:qej/9-x sb 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm lhp22z -h8i*5ku t eexcong and of rectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivityhtuhpx52*i kzee8c -2 of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radiusmd :jp4s,i nq4 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 (resistigp8p:xs.mu)r). jkt ;i* gnk jvity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance oos7-c;gb :h inf $18 \Omega$ 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 plagzat3dp -/k slo3 3:f8agbkr7tinum 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 determmkc jn**7+c p.d xydz9ine the melting point of indium. The resistance of the platin +7ykjpx n*mdzdc.*9c um 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 adkq/:+ *obpdgdluf,gg 5v+r 7n $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What current will igms *7 tv nu(biz995 lztir5e(t draw?

  A 150-W light bulb running on 110 V draws holk:0z *+q50hkfz ej q-2w +ochfzp 6wcw much current?

  What is the nominal resistance of a 100-W light bulb designed to be usebpvxtfhu j *+nzdn*5ehz14, ;bxk t:5d in a 120-V vkhf1x* x;:b55,nun*tdh+bep ztj4z circuit?

  A toaster is rated 800 W at 120 V. W k b)ante/wrvdi *(o036c5qijhat is the resistance of its heating element? i(5qvte* w06iad brj/oc)kn3

  A 200-W resistor is i1pph xwgk9ep--q:k *,5 pcnx rated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ry5vc0 5th caet fv4w:2+e-m33w omnc:qp)d urated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 12ya: )edsrii/4 l+3 vqqe)h+v l*0 rhtg0 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is uujfjd n ri:v ull *2+*endm5+1sed at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What is its resisywl5a3hi*+v 7i j r9edtance?

  How much does it cost to operate a 25-W soldering iron fo3dyvoc ir0+xj/h1c qr-e 2j 8qr 8.0 hours, if energy q3cq /yi+x 21vho0-jr 8djrc ecosts $0.08/kWh?

  How much energy does a 100-W light bulb usi9 j7m7 yo6wuge in 8.0 hours?

  A 1500-W heater is connected to ay8elbdn,0e8 m flcgy6 ix:,u3 120-V line for 2.0 hours. How much heat energy is p8iln8m3eu fgy c,: ,ybxled60roduced?

  A battery is rated at 12 V and 160 A-hgbw7tx5;b3mb3 xp xjbb9 --xg. How much energy does the battery store?5 w 3 x m9b-;b3tggbxbxjb7-px

  How much energy does a 25-W soldering iron use 6 v uex97box .6iqrgha/fr m+22m3 ovain 8.0 hours?

  A 100-W driveway light bulb is on 10 hours pz-sjxh w.:u/fnve 8mlg kr5/x2i2rf4er day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used,f n/gxsf2ri8 :x mle2jw5.hz -ur /k4v estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turnedzpe+xfg.vg ,t sc2xn 03n,j1 z on 8.0 hours per day. If electrsfzgx0vpj3nx1,.n t , +z c2geicity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a cen/cqs8n givra5b, ,2n ytral air-conditioning unit for 2.0 i,cq y,rnvbg58sn2 a/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 costs 8.0 cents per kWh?

  The heating element in an electric drier operatx t0mebwi) qe1 pci9;i cn4(b.es on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out ande(m 0 i;19qb)cw4i ne.itbcpx , 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 element?

  14 A of current flows qh-,fsh 5vin0 through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs (je4h:-gi)ri kd4m bq $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 ; x/bq-w3:as; fv i.az *cafuqhas 60% efficiency. How much current does it draw from a 120-V l; q;ffqas* xbu v:-./cazaiw3ine? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V abegikc h.jc)um*0+ (fc power source. What rms current flows throu.*hu+ef0 bmckjc) i(ggh this device?

  A 500-W device is conjcq2wzjmxb mu fnh+/6frvuy7h ;q8-23 f r+) wnected to a 120-V ac power source. What peak current flows through this deviceq/hbwvjwn 8u22 z6urhcxm3ymjq)f7 +ff;+r - ?

  A 500-W device is coh6 cgi c x 5erzagu+32r76pvx)nnected to a 120-V ac power source. What is the peak voltage across thc2) 3zuhacgpi65 xrr6v eg+7xis device?

  The diameter of a copper wire isk:;z+c k z2bfg 0.081 inch. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20z:kzc 2fb ;+gk A. At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)