A device that produces electricit:pz r 0b3ggiy:u 0lhbvejy(:-y by transforming chemical energy into electrical energy is called pvy(uyzg:b:g00 - 3rhlj:be ia

  A car battery

  The total amount of charge that yog5sctoqe8(s)ea39 passes through a wire's full cross section at any point per unit of time is referre o(y o8)c9ags5s3qe ted to as

  The direction of convention current is taken to be the x6 x*6s2fta6s;qwf* bk)nowzy+-fljdirection that

  A coulomb per second is the same asbadzznt/huch l/- e4//h)bgl )r(hw,

  Car batteries are rated in "bl;3/xhx u1i aqbhk 6-lv/i+namp-hours." This is a measure of their

  The resistance of a wire is def7tsrj+9atk2 l9zf/7i ejuh- 0o r rhwt)x8dy+ ined as

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

  The resistance of a dibx-n1 eqk4 2wire is

  The resistivity of a z3r/ 4ta q0-rs,glidjwire depends on

  Which conducting material has the lfbqcim.8b4 .b owest resistivity value?

  Consider two copper wires. One has twice the length of thk qox0hba0 (u8kr)kzr6ds: . ne other. How do the resistivitix a(z) bk:80 dsrkh6.n 0kuqroes of these two wires compare?

  Consider two copper wires. One has twice the length of the othi u0 4lzn e /fvr9 dxfi1(3ow9ohv*z1ner. How do the resistances of thesee ( vf hilo1 0 vr/9ixw*4f19unzz3ond two wires compare?

  Consider two copper wires. One has twice the cross-sectional area of g b(,yv)q)z xe0g0whbthe other. How do the resi)g(g,xbz y0e0hv q)bwstances of these two wires compare?

  Consider two copper wires. One has twice the lengthgvd9d* ywzts6 tvz ;7jhbs.t/p ,q54e and twice the cross-sectional area of the other. How do the resistances ;sdtvty zs.w* 6b/h z4g,p95qvdejt7 of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factor w.43dfm t*htonu oo7;does the resistance 4two.3n fu*7tdomo; hchange?

  How much more resistance does a 1.0 cm diameter rod have compare xwha(zb/drkb 5s3/ 0nq 3/kgdd to a 2.0 cm diameter rod of the same leng3 3z 0nk/dkds/gbrq/b5x wha(th and made of the same material?

  The resistivity of most common meta;lopa5fii07s+dw .*z*o+ ayv nr.lg als

  Negative temperature coefficients o-4 dh6k abg6pwf resistivity

  What is 1 W equivalent,8v9u ycb6* gjczqp* eoyba *; to?

  A kilowatt-hour is equivalent tuh5fz:b zwh,z+jj- vtxt2,/m o

  If the resistance in a constant voltage circuit is doubl-mc5w 6v wv,*qyf1m 6lu4tieogp-p7 w ed, the power dissipated by thw6e5uwflcpiw 1 gm4vomvt,y-7- * q6p at circuit will

  If the voltage across a circuit of constant resistance is doubled, the p;eqldlc p)x *,ower dissipatel ex)* q,cpdl;d by that circuit will

  If the resistance in a circuit with 2 *qd-0ld9/lghmjc if)z1r dyconstant current flowing is doubled, the power dissipated by 2 fj0zlc-g1*9mdd /y dqhril) that circuit will

  If the current flowing through a circu 97.n0 ouwgfcpyiv( q y+egc46it of constant resistance is doubled, the power dissipated bg7p nwy ov(0.9gy+e icq6uf4cy that circuit will

  During a power demand, the voltage output is redui hu)mp s*co1fi8m,y8 n 8zpi152cvo pced by 5.0%. By what percentage is the power on a resis)hm*5z, v1 pio1icp m2ysupof 8ci88ntor affected?

  A current that is sinusoidak)eej f kwbkg,b po(1/g9m9 h,l with respect to time is referred to as

  Consider two copper wires each carrying a curren.7/sxj *nec nv wpzsn*)jxr7*t of 3.0 A. One wire has twice the diamete ) *sjve*xn r7sncxpj/7wz*.nr of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially z5auazk06a :sv ero at very low temperatures are referred 5a0sak6 az :uvto as

  What current is flowing if 0.67 C of charge pass a poi vfl,5m 2 krnjlegn*)3gjcnix:4;h 0 wnt in 0.30 s?

  A charge of 12 C pass4invjhn iz1/na: q2vf)t) df 6es through an electroplating apparatus in 2.0 min. What is nzi qt4anv 26)1n vfif) d/hj:the average current?

  How much charge must pass by a point in 10 s forr dx ci( (vxobn0 9s7iyh8oa868 w2ycg 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 if t trn,wy0 n4uor.x+g+y)rl o: $4.0 \times 10^{16} \; electrons$ 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 been7 gm*zp:uh evf-kq-u- left on for 10 min. What is the n-* hv7fmepg:uk q-z-uet number of electrons that have passed through the coffee maker?

  In an electroplating proce-*r )om erv9afss, it is desired to deposit 40 mg of silver on a metal part by using a current of 2.0 A. How long fm-ro*9er) avmust the current 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 cause 4.00 A to flow through a resisrq 36.fd6z nzx4 ee9jntanexnfrn3 z 9zjd6eq46.ce of 330 W?

  What is the voltage across a 5.0-W resisuucgs 7h8o): ttor if the current through it is 5.0 A?

  A 4000-W resistor is connezclgeyvunff)w :;(1c4q*1jj neh)e)p+ tey 3cted across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. Whatx vqm6 q,1od3i ,,hgmw is its resistance? ,v,36 wq qhdomxmi1,g

  A 12-V battery is conn-tviw7km1( 68oge6nf z3f csrvt -p;pected to a 100-W resistor. How many electrons flow through the wire i8pc fo67igmet z(s r kt--36pnv1;fv wn
1.0 min?

  What is the resistance of 1.0 m copper wire of diam0ko6gces(/l g eter 0.40 inch? (The resistiv oe/c0(ggls 6kity of copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular bw i*8/ia d9lbped+f(8j8ibg rod 1.0 cm in diameter and 45 m long, if the resiiga l8e/djwbi9b8 dp f*(8i+b stivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resi2 g2bl:srby.m stivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistiviqx57 dmx8vdr4 ht8n. qty $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 c ,y9pfl;j5cu;l +ncg is its resistivity?

  Calculate the current th bwnp*c:mta9;fg )h/6a d-yrh rough a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected tobpt: g 6-ar /9wn;ay f)*hmhcd a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 28+ inkpz (es0atm.gzg8;fr95t ouoj 50 cm 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? (Thezktag(;ns8 p908oto +z5.ejgur5 f mi resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a r*) ur-k.af/sgcg-vd. hp 2neeadius 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 coppet.rjnhn yjfb vg.44 ow2ob/;2r 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 resistan/m38xz1z* q; lnz/khyk qos c1ce 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 of0:;faf6sd z sb 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 determine the melting point of indium.nvc2i7 zzmyycas+sk ;n /f .qw+;do*( The resistance o*c sw y(c7/++zknn mzd2qs vfo a;i.y;f 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 throuucyi.5 .22t4mg ot ksk5(hcys-h+grhgh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1l-ofwk u lw+85200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how much ch d/oz)smtzmx a; xmxne-( //,urrent?

  What is the nominal resi8(- ojsyt c0cvstance of a 100-W light bulb designed to be used in a 120-V circy(-o vtj0s c8cuit?

  A toaster is rated 800 W at 120 V. What is the resistance of its q;9--i ffmhx6rth 5xrheating element-t x59rqf-hhxi6; frm?

  A 200-W resistor is raup 2)0p8qx3t5 dk-mjz)rf h tzted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated as*(3ljhog j1 qt $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is jw5jlvxm/js7io2y (msac6bu 39nj .. used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is uuhkivh2yq: -)sed at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V. What j y6j n d ;qecgmeq5,ovde84r4c h1/t7is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0z6joy.h 6w e ;itb45tsl1yjq) hours, if energy cost 1);5t se4 .yjli ztwh6yqbo6js $0.08/kWh?

  How much energy does a 100-W light bulb use in ugpbmu,4u 2hg a:cl4f),hbe78.0 hours?

  A 1500-W heater is connected to ax+ wyhd hp7x*/ 120-V line for 2.0 hours. How much heat energhx/* dwhy+7x py is produced?

  A battery is rated at 12 V an3 t(cv -npvm6nd 160 A-h. How much energy does the battery store?m-v6 3 p(ncntv

  How much energy does a 25-W solder,s- m-w0sxk -vkl t7:kjccyl9 ing iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Asf dyzij b9(6a:rn,jg7 suming the power company charges 10 cents for each :z 79(ja, ngydjr6bfikilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is tu (b qxtis4oo,,d0wr, )c*a qmjrned on 8.0 hours per day. If electricity costs 10 cents per kWh, how muchr,xa0do,*t(cim )oqsbjq 4 ,w does it cost to run the computer annually?

  The monthly (30 days) elm hbh42ysj6l )xt6w*lectric 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 electricity costs 8.0 cents per kWh h)msb6l ywlh4x*6tj2 ?

  The heating element in an electric drierr01 pl3bft-yhgj o( ;c 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 ryjf -rh0lcog31p(; t bepair have on the power dissipated in the heating element?

  14 A of current flows xju ).hexe-ua,-j5d up;x/ axsr+ c7lthrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsg08u.fe wc2i v $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 rw6) n0cw 5fvrmate of 2.0 hp has 60% efficiency. How much current does it draw from a 120-V line? vm65 0rcw)f nw($1 \; hp = 746 \; W$)

  A 500-W device is connected to ,ya 2e6hcz6gsy8a1jmygm ,r xf /kv345kg,en a 120-V ac power source. What rms current flows throug6,a4ghmjak 3y e ggnrkycxm,5,8vz 1e2/ys6fh this device?

  A 500-W device is connected to a 120-V auaft/b*5 ,mkmc power source. What peak current flows through this*tuk/, ma5mf b device?

  A 500-W device is connected to a 120-V ac power source. -ih0 u l3c-a y2n2ybzrWhat is the peak voltage across this daziy2-y- rhnl3bu0 2cevice?

  The diameter of a copper wire - )ed1h6r/ stynp9gym is 0.081 inch. The maximum safe current it 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 carriers in one cubic centimeter ohpre169ty-sg )ym d/nf copper is $8.5 \times 10^{22}$.)