A device that produces electricity by transforming chemicc*47t1l xsy4 y; lvbwx+p xr6qal energy into electrical cxx1 +ryy4* ltqv;4wx p7l6 sbenergy is called a

  A car battery

  The total amount of charge that passes through a wq*pws ub)fw. 1ire's full cross section at any point per unit of tim1fbp.u * w)wsqe is referred to as

  The direction of convention cukk(6+ )uv 9q tzaodsrj oe8)m9rrent is taken to be the direction that

  A coulomb per second is the samezqg hdo- .. j) 4r;fs)s9gxyrt as

  Car batteries are rated in "amp-hours."nar9l i2(.fxd(8 jl jv This is a measure of their

  The resistance of a wire is defined au0)3thoimd7s jf 8qi 3s

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

  The resistance of a wiqrp:(qrd i0y/ re is

  The resistivity of afyduaa5iv ikoo:c4 ) ik7 2e (8pmj(p) wire depends on

  Which conducting material has the lbqtf;sm;0 iu1 owest resistivity value?

  Consider two copper wires. One h9 e;au)c e)td)mn* ulqas twice the length of the other. How do the resistivities of theseueea;q n9dc ))t)l*u m two wires compare?

  Consider two copper wires. One has twice the length of th k3j lhq5mpkg oj 97qjp-ip8)7e other. How do the resistances of these two wir-qj8hj pp7mpl9k oi75g3k) qjes compare?

  Consider two copper wires. One hzy qqu8u bvkt--y+(0x n/ hio(as twice the cross-sectional area of the other. How do the resistances oty y 0(qhxu-i nqbz/(uok-+v8f these two wires compare?

  Consider two copper wires. One has twice the length and twice the cross-sectioni )x y nsgien -wfjl40 z:-1,gna7)ffral area of the other. How do the resistancfx-:g lsg)fw 0z,nn jefa-714n ri)iy es of these two wires compare?

  The length of a wire is doubled .qxajt ) t ,uz+.ch y+p//ywbgand the radius is doubled. By what factor does ttzy,y cg .a+x /h.t/pbq) +wjuhe resistance change?

  How much more resistance does a 1.0 cm diameter rod have comparey0hvq2+b0q/d wuk4 e yd to a 2.0 cm diameteq/yvbd4 q2+ kwy0h0eu r rod of the same length and made of the same material?

  The resistivity of most comm70* kxb 4v hao* svyotu3ndm5)on metals

  Negative temperature coefficient3d: 6is yn6mvyhrw8q3 a+q*yxs of resistivity

  What is 1 W equivalen9w):h+kfrnwhuth :88jy s7 j 2qd4pict to?

  A kilowatt-hour is equivalent t0hpndj 4+n+qho

  If the resistance in a constant voltage circuit 5 vu 5q2c;cb; v)eqqftis doubled, the power dissipated5cqvqt2c q;e v)5;b uf by that circuit will

  If the voltage across a circuit of constant resistance is doubledzo h5f 1/u/3ixqy lq ao(b4*wa, the power dissipated by 1/y5of q*x bo(zw u3lqah4/ia that circuit will

  If the resistance in a circuit with constant current flowing is doubleg9 1v.py*h1,m gdoglz d, the power dissipated by91pl h*d1.myo,g z gvg that circuit will

  If the current flowing through a circuit of constant resistancy z:uyasa( 2l4e is doubled, the power dissipateduay(2z 4alsy : by that circuit will

  During a power demand, the voltage outpu x yp9i +d594p unjuj8nnxo)b1t is reduced by 5.0%. By what percentage is the powernj) j514 un oxp99x8ib un+ypd on a resistor affected?

  A current that is sinusoidal with respect to time ios xo6fg81r v:s referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twice5nj 8( wczxpfv2q ,3ge the diameter of the other. The rat (j2npzq cfgv5e 3x,8wio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very low tem;9s+cf hae3 nf /tklm3peratures are referred to asae3kt ;l9m+fc3n/fh s

  What current is flowing if 0.67 C ofm9y- - vwodsmrbnphoby4q6cl 272xq w ;2z0q8 charge pass a point in 0.30 s?

  A charge of 12 C pas 8qq ufm;;3ufrses through an electroplating apparatus in 2.0 min. What is tf3 fu;r8 qm;uqhe average current?

  How much charge must pass by a poav(zkbg 66a +uint in 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 flowing x16qf7dt4* pacw+n gt xk*v 0oif $4.0 \times 10^{16} \; electrons$ 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 oc85yr;.d ekow, hx agmrm818uf current, has been left on for 10 min. What is the net number of electr8e m ;. ora8uwg1h8r,xdkc y5mons that have passed through the coffee maker?

  In an electroplating pr smg9h57/cqi;j.cw ufocess, it is desired to deposit 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 silver ions are singly charged, and the atomic weight uifq/w9 hmc5;cg. j 7sof silver is 108.)

  What potential difference is required to caudc2 .,zwk nzmt1 ry4g68fh2qzse 4.00 A to flow through a resistance of z8chtdy m fg12 qk6z2.,4nwzr330 W?

  What is the voltage across a 5.0-W resistor if the current through itlz3en o0wgxyr(6 o-h * is 5.0 A?

  A 4000-W resistor is connected across 220 V. What current wil dytwfdc95ne0 + q;cy0hyym; 6l flow?

  A light bulb operating at 110 V draws 1.40 A ow7g0s1vuz 1o tp7 0t2: d3zzlbuyc(euf current. What is its resistance?tbc31( 7 y00e wu7zzs vp2zo:gtduu 1l

  A 12-V battery is connected to a 100-W rci 7c zsd1s7r(esistor. How many electrons flow through thedcr 77 s1zcsi( wire in
1.0 min?

  What is the resistance of 1.0 m coppertko6/;q8yfj) z8gtxd ;y9 jls wire of diameter 0.40 inch? (The resistivity of copy6)8; 9fso ;kdjlj/gxq tzy 8tper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m loe+hypfpu -f++z :t 7lqng, if the resistivz:pl t phy+e +ff+u-q7ity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wi0e4h 8ri wo:sh3y vx9zre (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 (resisu xasnp d a*cg0yq8*yo0k3t3y638 mvwtivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 its8d( vjc:h.xkb47v/ut ug rq2i resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mmkxc (xc wgcpr+19cmq7 6o4qceu/ f;f -) nichrome wircf4-xmke7 qp6u (1rcc+c;c/qx og fw9e 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 cm long and of rectangular cross-section, 1.0 cut*frzr8;9 ow m x 2.0 cm. What is the voo rfz*;t ru89wltage drop along its length when it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire4qz+dzft4/r(ex2s u t has 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 (resistivit0/. 0 kjlrqtk 3rniu3ry $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has b r ) tmf:tjaa1*2fpm-a 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 .fqatoj(h f19on a*5a of resistivity 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 determin nhv y,:b9gte:(r-g +mhlf og4e the melting point of indium. The resistance of the platinum m hrly-4g 9vtogg+f( h:eb,:nwire 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 th) ng(wymg+l;srough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What cury,ezv8wjx (zaj+*z3p rent will it draw?

  A 150-W light bulb runr 3vgd,a q w*w7 )7y;h7cbmxlcning on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be d psf)w.d/75 egw;bp pused in a 120-bpep gdw/7pfsw;) .5d V circuit?

  A toaster is rated 800 W at 120 V. What isd8arqm)mf(arm61 91(do7; sujifff)rfx 6ju the resistance of its heating elementimfjroxaf6u(r f )j) 8f 1dsd f qm;(r1ma697u?

  A 200-W resistor is ratedby*o7(p b,gwxpi0j (y at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratei4l+plke/, 4(zy/ti hmqyy+ed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what currence656 ni wbpo;4 p90xmq0pkdtq./v zpt does it draw?

  A lamp uses a 150-W jr 2kd+-x:)sz ukak:hbulb. If it is used at 120 V, what is its resistance?

  A 25-W soldering iron,(ti5z t) nmj- dflj( 2c.rvef runs on 110 V. What is its resistance?

  How much does it cost to operate a 25-W sod339 :ndkhrlya 2*sf- fhzfd)ldering iron for 8.0 hours, if energy costs d9a k-f:h 3yrdnlfdzsf)h3*2 $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hou zs4q bv)9 j9cpso7ly7nw9.ters?

  A 1500-W heater is connected to a 120-V line for 2.0oc fmfq,z-+4 qbbe)qq+4:lj j hours. How much heat energy 4 ebq: lc+qqojz4-mjq f,f)b+ is produced?

  A battery is rated at 12 V and 160 A-h. How much energy does the batok, 8 s(e fdr7qai+or8tery store?7s + aoi k,(88fqerord

  How much energy does a 25-W soldering ironbk x ( vb,:h3w)d0vlyn use in 8.0 hours?

  A 100-W driveway light bulbgmzua l z7u87/ is on 10 hours per day. Assuming the power company charges 10 cents for each ki87zz u7u g/amllowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turnei3kwyfs x4u m*2 1qemezj1/ 4ad on 8.0 hours per day. If electricity costs 10 cm/ w kue4 yjf 4xq21s1emi3*zaents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included t+- cql2i bzw3jhe 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 electricity costs 8.0 cents per kWljb3 +zqw-ic2h?

  The heating element in an electric drier operates on 240 bqxfw btvt3:7d yx03/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 i/b 3vtxy70 x fbwdq:t3s 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 ico//k pm (i*/owh8e othrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsuqw at: jy/ul;;gf2gr- k7unw (j;n ,a $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 wo lxf4;3 /jmsntkho9 nypj1 0f,rk at the rate of 2.0 hp has 60% efficiency. How much current does i otmx9nffjl0j31s4 yp n,; k/ht draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. 2 cki:4e ycn4pWhat rms current flows through thisp:24keccy4n i device?

  A 500-W device is connected to a 120-V ac hbh4 gp*buy 5s8h )in o1qs( bej(/5rppower source. What peak current flows through thn(h4h5 o*/hbbpbs1g qjsey)u8ip5 r(is device?

  A 500-W device is connec* b gv04(etq24z inehwted to a 120-V ac power source. What is the peak voltage iw4 4zt2b*vne(0he qg across this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current bo q ))m1;ofs.dk3 pdjit can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number of electron carri)sbqp; 1ddf)jm 3 .ookers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)