A device that produces electricity by transformlm7a n a2j 49wwm48klting chemical energy into electricl 7 2k9lw8 4mtwmajan4al energy is called a

  A car battery

  The total amount of charge that passes through dy3b gdk(l7ndx65lwu ow8i(+a wire's full cross section at any point per 67iobd +3xg(dlu wnd8ky5(w lunit of time is referred to as

  The direction of convention current is taken to be the directiob1nez:i. p7mf7s2dxvvwb) z ( n that

  A coulomb per second is the same 1z8gcowu bv 8.ok3v2povn l,/as

  Car batteries are rated in "amp-hours." This is a measure of the/)zteoqj cy/3. x*mvair

  The resistance of a wire 4 + (ebmlpgpr.is defined as

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

  The resistance of a wire rygix9;ao8 d4 : )psdiis

  The resistivity of a wire or nx)j 6lxd+w+b: -)mgseci; depends on

  Which conducting material has the lhpm ev3676.7mv p/0 y+p gslx.sownqj owest resistivity value?

  Consider two copper wires. One has twice the length of t; w:apxdm3/l9/i 7h .whk pgrshe other. How do the resistivities of these two wires compare? mhap.79/lp: dih kw gs3;r/xw

  Consider two copper wi +bpw:c*ye+- r9voi+ktx3 wryres. One has twice the length of the other. How do the resistance+wrv-t ro3 wypey :bkc +i9*x+s of these two wires compare?

  Consider two copper wires.v1(hmup * mkt/ One has twice the cross-sectional area of the other. How do the resistanctp 1v/ku(*h mmes of these two wires compare?

  Consider two copper wires. One has twice tp+lf kea +1**yxj0beov +v +pzhe length and twice the cross-sectional area of the other. How do t+zopkfv++1*bj*lax e +vp 0eyhe resistances of these two wires compare?

  The length of a wire *a- kia+ ai2aeuq4y0 3odjgp, hv2 pj2is doubled and the radius is doubled. By what factor does the r+ui-ayk h204 j2*epqiav p32agdo , jaesistance change?

  How much more resistance does a 1.0 cm diameter rod have compared to thf*bjz6liw 9ce6g ,v9i2/ ac a 2.0 cm diametergwlzc/h 29e* j,b69fic6 it av rod of the same length and made of the same material?

  The resistivity of most common metfp4c u4:b5oyuh50 z yxyna ,p:als

  Negative temperature coefficients of resistip rweg :v/-+w-8j pnievity

  What is 1 W equivalent to?fl i,s*4m)/;dgk4d -pduqm uj bl)c, f

  A kilowatt-hour is equmwlg04c2a k qo)udf4 4ivalent to

  If the resistance in a c hibf*8yy9 z5donstant voltage circuit is doubled, the power dissipated by thatfyi 8yd*z9 bh5 circuit will

  If the voltage across a circuit of constant resistance is doubled, mw9fw6y9gph0y g m(oq. 2 q0onthe power dissipated by that c92 (w0ym9hnfq 0gy w.qgmo o6pircuit will

  If the resistance in a circuit wituln ba.8o wg:7v6qh8q0d f dj2h constant current flowing is doubled, the powerqj hv2w uf87d0bg6ndal :o8.q dissipated by that circuit will

  If the current flowing throughsu/6evnxf90eg(a;c l a circuit of constant resistance is doubled, the power dissipated b /e(e ax6 ;gcv9slf0uny that circuit will

  During a power demand, the voltage output is reduced by nr n-ldc2v hh7y0r6 n;5.0%. By what percentage is2l -rnn;hr chn0y7d6 v the power on a resistor affected?

  A current that is sinusoidal with respect to time is refz, t0*gdqm9 mferred to as

  Consider two copper wires each carrying a current of gd nf j9ar(wqx9y+nxc:v8-s: 3.0 A. One wire has twice the diameter of the other. The ratio of the drift q:9(8n 9vfc+j gydx-xn :w arsvelocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essential.5bow: snr w 8exih3qc5 uwe:+ v1peh.ly zero at very low temperatures ar b.s31 :rcow wxi 5qw:upn5v.e+e8ehhe referred to as

  What current is flowing d*goius67d*vzxi( sc s -u9 d;if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating app89))q-a qac f)bh kzcbaratus in 2.0 min. What is the )-af )qbkq8z ch)c ab9average current?

  How much charge must pass by a point in 10 s for the current to be 0.qm85zvb 4os r(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 5 rm84x5ljrx e/88rzs. i(dny6owq rqif $4.0 \times 10^{16} \; electrons$ 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 beecd(h;cvx +8w7z, d;k:glvyesn left on for 10 min. What is the net number of electrons that have passed through the coffee elh(c7g :wxv+v;cz;8 ,yd skdmaker?

  In an electroplating process, it is desired to dn xftbvj vz1 **h932-:htk jursugg03eposit 40 mg of silver on a metal part by using a current of 2.0 A. How long must the t2rvt :u0vksz3g9x *j*f 1bnh3j-gu hcurrent be allowed 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 required to c8b:6y/fj )c g,wzn .ny6fkrm gause 4.00 A to flow through a resistanc/w.zfn ) byycgmkj:6n68,gf re of 330 W?

  What is the voltage across 9 30ps k kf3z+ijiz+oe5nv9kx a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is conn z)+lxyy-p2dcqv 76ae ected across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current (tn;x)3o igad. What is its resistance?a3;xg) no( dit

  A 12-V battery is conms2d1vdx cx/-xuh g2 (nected to a 100-W resistor. How many electrons flow throughhdc2 d(x1vmxsxg 2-/u the wire in
1.0 min?

  What is the resistance of 1.0 m copper wireu3gb8 e7so:4kc k1 efc of diameter 0.40 inch? (The resistivity of copper i 4g3sefkk81co 7e:u cbs $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance 9osr sey:b 4u42:. pkkj ,zydlof a circular rod 1.0 cm in diameter and 45 m long, if the re4po:9kur:y, sdzleybj.2sk4 sistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire/*aik,g3kr3t cr4 rc6 d+poj eaf +(yk (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 (resistiv/elvn:u:jeq jwp-a j9r k456kity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 i+/ (t7kkq6qeq2tx n 8f* viozns its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm) nis p98x .u.futychrome wirep.fx9.t 8u syu if it is connected to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 c) 1kvd :(sgul ,o/-miz3c,xu c,enpuym long 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 ress(z-um uo)ki,lx p ,gv/ yen3:cuc d,1istivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of lh,(r jz z) a/3ss+vrh0.50 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 coppekhy) xsc0h ;2jumwc6;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 rjlo0 g:-baev0jwp gk8,g8u6 tesistance 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 resedqi( r 6cjriaxfi0 n/j k +q+5x6m18mistivity 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 useh kqo aq8s; /z,g*ike62s5d3dco c epmy7j4t 4d to determine the melting point of indium. The resistance of the platinum wir8ikm; 3thc s do7q/qjp4ksc5,eze2* gda 6y4oe 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 p(li uc/ev *6qb5z8(gpjgrmwrd /36odrm.i 5an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated a,dxd)i:+9tt+n pgif et 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V dsi8kxktu lvlnhvk65kzf+0 k*: 2n. f3raws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used /wci0 b24,uqkm*nf xa in a 120-b xcui f4,a/w2m*nk0qV circuit?

  A toaster is rated 800 Wchrsi+nr,*yt:t tl 93 at 120 V. What is the resistance of its heating element?r9t s:nh+3lty r*c,ti

  A 200-W resistor is rali-k1 m g -oz2u,: kc4a:gpmcbted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rate- ;8xu7da mq/mj0xir wd at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is oiq odwhz e(93/;8q dw3)nlwyused 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 resistance?*rzpt thfk;om8r/ k/ 3

  A 25-W soldering iron runnl)j q(d1mq v3s on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering g 0dhvm(unq25iron for 8.0 hours, if energy cn u q2vmd(50hgosts $0.08/kWh?

  How much energy does a 100-W light bulb use5+iaqpd1 o bg- in 8.0 hours?

  A 1500-W heater is connected 8shx7c mvri8: to a 120-V line for 2.0 hours. How much heat energy is producvc7hs8mx i 8:red?

  A battery is rated at 12 V and 160yce 0bi2i/o :m A-h. How much energy does the battery store? 2/iyb0imo e:c

  How much energy does a 25-W s +)i8vq3tvuqr oldering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per dsbo ;fz9ks28 f+tks;u ay. Assuming the power company charges 10 cents for eachsko;fsk t z;bsu829+f kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monghc) n*raujt)lgs: / zb o0-s+d: o.goitor) is turned on 8.0 hours per day. If electricity costs 10 cents per kWh, how much does it cost-n +gd)gc/z.*ta)0 gso:uro :lbohjs to run the computer annually?

  The monthly (30 days) electri6efrcb 05dj:p 8 (rducddn96pc bill included the 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 if electricit8r(un d6 0cpjfdd9dp:rec5b6 y costs 8.0 cents per kWh?

  The heating element in an elect15o pdmgdey( 5ric drier operates on 240 V and generates heat at the roy5dmd ( 5gep1ate 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 element?

  14 A of current flows thrvjg rc j;*22ucough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs wzu5m*,k kk0c+mcqd ($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 muvvn+ vr qse f+(.3t18 +iptfacch current does it draw fr+t3 ai+fcevnqt.(+ p8svvr1f om a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current flows.el ymb+d -b7:w2nxglzb z4z4 through thi4xnwb y7mzzl4db:g. +ez-bl2s device?

  A 500-W device is connected to a pb v8o+v+.wsy 120-V ac power source. What peak current flows through p.y s8 vv+w+bothis device?

  A 500-W device is connected to a 120-V ac power source. Wha4,b- vd dorhlm 3i 2rw9*ksh4rt is the peak voltagem,hbk ihdod*r-sl24 r34rwv9 across this device?

  The diameter of a copper wire is onyil8 0:-pv vsc/(zm0.081 inch. The maximum safe current it can carry (in order to prevent fire danger in building construc :pn-v c8(y m0slvo/iztion) 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 $8.5 \times 10^{22}$.)