A device that produces el3dtt7t6)w6,ntvje ) x4g jyf cectricity by transforming chemical energy into electrical energy is 7j )t6y g)w6,3j4cte tdfntvx called a

  A car battery

  The total amount of charge that pase6q lll l-5uqas,q ;)v vq/t0 3+muhnrses through a wire's full cross section at any point per unit of time is esqv;6)+nllulaml 35qq0u,qv /r -th referred to as

  The direction of conve *fk9)vjm7tg2q /wbqi ntion current is taken to be the direction that

  A coulomb per second is the sahj2 4 m7oq; qy-vzqv+eme as

  Car batteries are rated in "amp-hours." This is a measure of,6j* hp9irp/ q)s; p 8y+txd/cewqc tz their

  The resistance of a wire is defined as ocmh on,p613b

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

  The resistance of a exl4t.d j:d -of4 mngx-l1l6mwire is

  The resistivity of a wire k y:p3co) xgv.qn v-,idepends on

  Which conducting material has the lowest pwarg 0f3 sttjaf).j/5:y7v x 1k g;gjresistivity value?

  Consider two copper wires. One has twikrzaf y1/9n8n ce the length of the other. How do the resistivities of these two wires co8zkyf/n9r1 a nmpare?

  Consider two copper wires. One has twice the l y1mxkx3ms-lw 08 ms-vength of the other. How do the resistances of these 3w8m x1 s -x0slvmkm-ytwo wires compare?

  Consider two copper wires. One has twice t:x0m:yvc p l9;ou9iqyhe cross-sectional area of the other. How do the resistances of these two wires comc:vu99q;o 0i yply mx:pare?

  Consider two copper wires. One has twice the l, /lfybsk z71;fizkk4ength and twice the cross-sectional area of the other. How do thezbi ,l4s 1kzff;7kk/y resistances of these two wires compare?

  The length of a wire is doubled and the ra)beais5w32 d odius is doubled. By what factor does the resista)5d3 2beiwos ance change?

  How much more resistance does a 1.0 cm diameter rod have compared to a -erlklq5m 9g3 2.0 cm diameter rgr qll- m59ke3od of the same length and made of the same material?

  The resistivity of most common meps6o olxf7.4x x:dc wk,( 3f/ / ;*ffijydbbcitals

  Negative temperature coefficients of resistivityn84;yk8 dyas x

  What is 1 W equivale zr/337n,,g6:w ngqp b exemi+xaazo 2nt to?

  A kilowatt-hour is eq qh9b*dpi.gy5uivalent to

  If the resistance in a constant voltage cirh1ll hi685 j(+,ax segmk l 4qjebya,*cuit is doubled, the power dissipated by that ci4a6 m e8 ,hsbjl1+ayh5 ,xgiek(jlq *lrcuit will

  If the voltage across a circuit of constant resistance nhu/)q1 dm(fc7 xndl7is doubled, the power dissipated by that circxcu)n hq7(7ndd ml1f /uit will

  If the resistance in a circuit with constang a;fxf4:dzq)7fmza; t current flowing is doubled, the power dissipated by that circuitfxg4mfdz ):a ;f7a;qz will

  If the current flowing through a circuit of constant resibm;m cla4:1 vustance is doubled, the power dissipated by thatmb vm 4l1au;:c circuit will

  During a power demand, the voltage output is reduced by 5.0%. By wha; md utv2uw/3hp g;v48tqn5aft percentage is the power on a resistor at4 g/vv a8ud2m5h;3wnqutpf; ffected?

  A current that is sinusoidal with rltauwdb7 :eiw4 ze ++3espect to time is referred to as

  Consider two copper wires eg/e- g lgwjo,v5y9o )4g c:mbbach carrying a current of 3.0 A. One wire has twice the diameter of vbgewog-:) oybl45g/cg9 ,jm 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 bipw8pdrgew1v0um( 5xoo/ 2/ir df4n(ecomes essentially zero at very low temperaturvp n8d(5 1 g e2i/rormx 0if4/wodwpu(es are referred to as

  What current is flowing if 0.67 C of charge pass a point in 0.30 sl 0db*fl. lhv*lnlg z j8m6:3s?

  A charge of 12 C passes through an ele6r is y1pr(c9ictroplating apparatus in 2.0 min. What is thec(pir1iy r96s average current?

  How much charge must pass by a point in 10 s for the )vsz6p rs l.,oqvq gj72h/pcs;wp 8 )ncurrent 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 flowing4: rgn9ovzlxxhga4) a h-qy.x v,f/0 y 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 -9j4gh r/c) qzw .mzja;6tjjcdraws 13.5 A of current, has been left on for 10 min. What is the net number of electrons that have passed through the coff w9ajc4rtgz cjh)/m-.j;6z jqee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on a metab)j1 da-ws) nrfxa48 ol 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 o)x- a8drwsbf) jn4 o1af silver is 108.)

  What potential difference is required to cause 4.00 A to flow thg/ b b29*2tvoyexv6ao rough a resistance2v9oab6y t * 2v/bogxe of 330 W?

  What is the voltage across a 5.0-W resistor if the current through it wcf.hh3s5f2x n6dr;uis 5.0 A?

  A 4000-W resistor is connected across 220 V. Wh(olked7jo ( n:we b5983t xnvmtmmg4due9 5g:at current will flow?

  A light bulb operating at 110 V draws 1.40 A of ,39jw dtu-4o )n(k chff 5issucurrent. What is its resistance?5- s4,ocu3f(dtskf9j h i)un w

  A 12-V battery is con p ;fq fimf/4//bll1scnected to a 100-W resistor. How many electrons flow through the wirem/i1/fpllqb /f4f;sc in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The re1p2ei( o./lir1jaz9 enkv v 3tec tu);sistivity of co) /kt(1uev1epc3nzt2ijileov .; 9arpper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a cirv x2r:apy*lgsq* .mh5v2s ps7cular rod 1.0 cm in diameter and 45 m long, if the resistivitpv s :x s2ah v.25ylg7*qm*psry is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (rwizkd21 zh fojex7lc/ 4vy/-i:4 k3ioesistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wfwujb kj.u8 3im53e5tire (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 l( nx7yh/r.v4h4sdx. c lf ,bylong, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the 0hl 9* e:s)k pvb86bzhian3ijradius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity esh8pi0 bkzaib9hvl*j)3:n 6of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of raa2 ed7a 4 lrjhn03t,lectangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carrit e0ar jal7dln,42a h3es 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0.50 mmtxn8q0l (3w zuv: s ej0+lim0i0igmu; 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 (resi9yp1 1cz et+sfstivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resista/+8ag.cr e zl)zr m.hxw:7/nrba* fhhnce 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 resisu(tiohgs( 024 +td (sjuka)o vtivity 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 the1lte . qrlbia1,78d es melting point of indium. The resistance of the platinum wire rsa.dqe1e 8bt,ll i71 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 througxt9nm/:;sq0ps 0-w u qe;zdpah an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated pitq5f 5uf+t 1jhpa ,.at 1200 W. What current will it draw?

  A 150-W light bulb runninga gyt;;p*2i 4rbkwqe0o c) g-o on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designlzhq9k/ ei;0hu*:fz)wdtid- ed to be used in a 120-V cird)tu0k*hi ;ldq /ifh w- :ze9zcuit?

  A toaster is rated 800 k+k8*0 edsrul9kui 3 lW at 120 V. What is the resistance of its heating elemen3l d9suk+0u *ile8 kkrt?

  A 200-W resistor is rapt;.l mo;2:a7 jb* kvt nm le7ezrro38ted at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is .mi u i7wr.d np):tc/d uk2gs0ro* k;xrated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, j, vc+uc0 krsfw (d sxqk75a44what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what is its r,ls+mf( 0( an 5qzrumtesistance?

  A 25-W soldering iron runs on 110 V. What 4ab.ukeo-g (n is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if en j-a+ j+g5s-xb ysaz, k +q a*igg713xkcyji;tergy costsjt xgkg++s aa7 czx k1 i5iy+g-by,;q- sj*aj3 $0.08/kWh?

  How much energy does a 100-W light b:tqb1;*edah73 sjre ( unvrx 9ulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V lin3b c3ct-jv lt3lj3d:dg pwl8 (g8*p vpe for 2.0 hours. How much heat energy isdljbt3 833lp cgpvl:-vdjp3 *cgtw(8 produced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery store52oqh,hc5jbk. 4 frvc?hc f.c4v ,q5bh 2rkj5o

  How much energy does a 25-W solderinw- pi zd5.nxo;g iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the power0/sh:k2qq 6lti9*obwbo7fqq company charges 10 cents for each kilowatt-hour of electrici7* fq6k2:obtwl9q h 0oqqs/bity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. I x55ee1twh;a if electricity cost;ei5 t5hxawe1 s 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill incluqfv6 9v qq9va-2oloz)ded 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 f9lq vqvzvf) 62ao9oq- or 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 operates on 240 e,i29lzcef; 8 vtaob0 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 repair have on the power dissipated in the heating elef2taclzvi 8,0 ;be9oement?

  14 A of current flows through59bv zgf3t7bl,i-fc- t8 xr af $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costaeft+ 1f m4nny b/m6o;s $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. Howc; sph: q3n/kp58ap zj much current does it draw from a 120jp;hq / p:nspa8 5kc3z-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current flow p,)p x,u2)7qya hxbhss th p,xyha))u7sqx 2bp,hrough this device?

  A 500-W device is connec7 t1he)nwve rd+m gk41ted to a 120-V ac power source. What peak current flows through this dev+ hmnv14d rge1te)7wkice?

  A 500-W device is connected to a 120-V ac power source. Whaxq78v ,sp*c my f-xdo2t is the peak voltage2fp 7cqmx dyx,v-os*8 across this device?

  The diameter of a copper wire is 0.081 inch. The maximum safe current3tl0xzp6h k+ w)7dvo x 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 carri0kv+ 73zx pl hwtxod6)ers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)