A device that produc;qgq-0 -touhrke vf/md 3e3,a es electricity by transforming chemical energy into electrical energy is calleo,f-e0- er a3qtk;3hmu/ gdqvd a

  A car battery

  The total amount of charge that passes through a wire's full cross seb7 quj5er o2*tizx 5q th-3gf+.ym9k cction at any point per unit of time is e fxh2y3g9-uz*m.tkj ibotq7+5cr5q referred to as

  The direction of conven7c kc,h,f) ebytion current is taken to be the direction that

  A coulomb per second is t c m,cl hb 5;d4eqwvq0oa2s,7phe same as

  Car batteries are rated in "amp-hours." This cvlprt9;*9 b*kh8a ns is a measure of their

  The resistance of a wqi atxv99sh26ire is defined as

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

  The resistance of a whp2b3/72mswjcc, plkire is

  The resistivity of a wire depends v 1t3d;gxkwd9u(do0b on

  Which conducting material has the :*(dyq t b47ewilx14j9z qsshlowest resistivity value?

  Consider two copper wires. One has twice the length of th cfot.w 4l6*k)z0xvsue other. How do the resistivities of .6ut* fzv ow)sxckl 04these two wires compare?

  Consider two copper wires. One has twice the length of thetv(0p r)kwes1 other. How do the resistances of these v)s0(ekp1twrtwo wires compare?

  Consider two copper wires. One has twice the cross-secti pf,8e zwd 6vjdx) z9a(6mh,wzonal area of the other. How do the resistancesem 69d j wxwvz phzfa86,),zd( of these two wires compare?

  Consider two copper wires. One has twiv21x8 sye1)u lrdprj8bz( mq5ce the length and twice the cross-sectional area of the other. How do the resistances of thes1sy)z8x bvl18p rq ed2rumj 5(e two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factor doq.:kdx wmsncnz.a */al*. 6j 9ut rjs6es the resisja.xztj.u n.qwd96n:/crs 6s* l*am ktance change?

  How much more resistance does a 1.0 cm dihtoa, b5 1r3d /7bnoviameter rod have compared to a 2.0 cm diameterb3v7dh1ob n 5ot i,/ar rod of the same length and made of the same material?

  The resistivity of mostu6sfv9e,old( 9 r-x ld common metals

  Negative temperature coefficients of resis 2hj1i3qz+p ae5m-ky wtivity

  What is 1 W equivalem, fzpoq17 zhgcxz0 jxl(v /(8nt to?

  A kilowatt-hour is equivdr;ni+1o: qk, o 0*ahhta) oigalent to

  If the resistance in a constant voltage circuit is double nt5jet/f:s;.z gnja* d, the power dissipated by that circuit wign f/t:e jaj; 5.*tsznll

  If the voltage across a circlt.jjf e/ */0uts 1ojxuit of constant resistance is doubled, the power dissipated by that circuit wtfu1/.jt0js*x o /j elill

  If the resistance in a circuit with constant current flowing is doubled,3g*s:xakgt. dgpu .i9 the power dissipated by tha9ts*k .gp:.3igdxg aut circuit will

  If the current flowing through a cirkc5m mj;jtd8) o)ic3 rcuit of constant resistance is doubled, the power dissipated by that circu)i) ock;td jmrcm5j83it will

  During a power demand, the voltage d ;zj8j, .msnajyu2s9output is reduced by 5.0%. By what percentage is the po.a z9j2j;m8nsu s, djywer on a resistor affected?

  A current that is sinusoidal with respg :*:/8gm3zn1kzioqz7a vj xxvhy 0d- ect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. Oneuuv; 0e zv78gx wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to ;gu8x0e v v7uzthat in the larger diameter wire is

  Materials in which the rexrwj9w 9.uc1lu- yobx d5t d/:sistivity becomes essentially zero at very low temperatures are recu95 u/9yrjd:x1x-dwtw bo l.ferred to as

  What current is flowing if 0.67 C of cha,r cjtpgao0+la40o p- pvn:j+rge pass a point in 0.30 s?

  A charge of 12 C passes through an electropufpyd*4o d1 g0sg y0z)lating apparatus in 2.0 min. What is the average cu0gy)yp14d0zosu g *fdrrent?

  How much charge must pass by a point in 10 s for thex5b6xd8nqs))w iv f; e 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 ( -kz 6rccfg 8ms-;hy)ftg;qm 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 fo1 j/zofs8 ffg )opmm9fv.0 ,zbr 10 min. What is the net n,f1f8 z g .9o0/fpbmovm) zfjsumber of electrons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silverhu1c7 p,7y kz xpg3m9r on a metal part by usik7mp, xhgp9r1z y37ucng 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 of silver is 108.)

  What potential difference is required to cause 4.00 A to flow through a resisda c;x ok-oswd(:2ig+tance of 3:d+k(i-2;d cxoa swog30 W?

  What is the voltage across a 5.n8c j69gfmqrwpvja0 w :15x/ t0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 V. ll;uqy; r3ya4 tzs61eWhat current will flow?

  A light bulb operating at 110 V draws 1.40 A of curre cq,aolkwk 0 -sw06qw)t 2)lkcnt. What is its resistancel w)w,k0ct-aw qkl6s)2qkc0 o?

  A 12-V battery is connected to a 1008 .wo2felx1e q-W resistor. How many electrons flow through the wire xfe qloe8.2w1in
1.0 min?

  What is the resistance of 1.0 m u 0+yv ovo7k/tcopper wire of diameter 0.40 inch? (The resistivity ofk+ovy7vo u /t0 copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 c3i*ohhw4a;we m in diameter and 45 m long, if the resisti*;aoe hwihw 43vity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wir* b ;h n;i-b:ndfde:1s* kjezje (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,taao)r0xys7wyh d4l)ayk0) ity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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 its ru hpud4 :kyj;; kg,p5gesistivity?

  Calculate the current through a 10.0-m lon x .ixennlv1hd:+ y6c+g 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V 1dix:n+n+ 6hxvl .eyc 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 cm x 2.0 cm6wybe ux 1v 61h8y wjw/snqz.+. What is the voltage drop along its length when it carries 4000 A? (The resistivity yqs8h1w+6bz wvwu6 1n/e x.jy of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nich9sswbh -:or7f .,/oz3fz hvz krome wire 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 (pb*f4 z )jskpu6( +i8 ;lkqx jbx5/ya cj:rk/kresistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a zu8zph.k v6xd vygw: 5r)p7ov3lz1m/ 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 coeffig9h3)xnf/oap w 0/hs jcient 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 determine the melting point of indium. sk8k)o+q / s/dfy jg1wThe resistance of the plat)j/qodwksg/k 1+8sfy inum 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 ar i4ae :v(fs w+ -:kui:6hplvf3. xuvtn $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. i)n6j36b cv.)dy(6rp pjm daa What current will it draw?

  A 150-W light bulb runwy7ykj17 y2q sning on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb78t1 qxyu:ty. ah1no c designed to be used in a 1208yt:q7ao.uy 11nc ht x-V circuit?

  A toaster is rated 800 W at 120 V. hj2p3:zmh-ejfe5* ic gne27 a What is the resistance of its heating elemenez5ag-2 3c7j:h 2 ejhpi*menft?

  A 200-W resistor is rated o5z2 v;y3vtni k 27iccat $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is b *g;:s aqf 4xy r-vnda3(d2gbrated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used *rd c4. /0y:yfojv j dtdb/8x5wd7glbat 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at q)v w7glucgqor1,c); 120 V, what is its resistance?

  A 25-W soldering iron9vk/u (/4q5 znww n e8ctw 2n0rh0uiem runs on 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if ener id.3c g(xklg*gy costs (gc g.3d*xlik$0.08/kWh?

  How much energy does a 100-W light bcgh2lcev.4sa+-pz h r-m n- m9ulb use in 8.0 hours?

  A 1500-W heater is connected to a 122jctokuai, 0 70-V line for 2.0 hours. How much heat energy is prodot720 ik,juac uced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery sto +8atel*t(kh ihx4:flre?fi 8 h*h:x4lt+lek(a t

  How much energy does a 25-W soldering t uh8,59 6yph gq1sdcu1br d+giron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per du1foael 6ew,:ay. Assuming the power company charges 10 cents for each1ae owfu:e6,l kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hoursi,ta3oovw(rm alm g85.pz+1k5 hvu-d per day. If electricity costs 10 cents per kWh, how much does it cost to run.phov l1immuz5-3, r8 (do atwav+kg5 the computer annually?

  The monthly (30 days) hzblpp0;xs: :iyg0/u electric 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 contribusuip0; 0z :/yhgp: lxbte to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and generates heat atb4 nao0+,p q5e j*y0vyc/n dza the rate of 2.1 kW. The heating element shorts out and, in repairing i e ,dzq0oayyn/ 0jvbp+ nc5*4at, 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 throug6evuq;x1*n32aishtyu2fy 2o 2 :ppnuh $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs q(e1*gdxma6 7 2yuwqr$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 m8k jfs4 6m/cdhp has 60% efficiency. How much current does dsjfc 6 km48/mit draw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is conrvwcpg s;0d)e g8 :w;hnected to a 120-V ac power source. What rms current flows through this device;)wgcdvg:e ;r pswh 80?

  A 500-W device is connected to a 120-V ac power source. What 4c io4 fr4g9nv0b7/k9dgapj0gtb0e c peak current flows through this devib cvnpg g/094adbo 704ki4j 9ertgc0 fce?

  A 500-W device is connected to a 120-V ac power :qnjuyok09wb: 3 cqu 8source. What is the peak voltage across this devicuy8 :o 9nbqw:qkju3 0ce?

  The diameter of a copper wire is 0.7e- tm6c f;vgd081 inch. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, wha6fge;-t 7 mcdvt is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)