A device that produces electricity by tras6u bq00y5 jqansforming chemical energy into electrical energy is callaq y5buj06 s0qed a

  A car battery

  The total amount of charge that pavg cn8snxr,q99b 2 lw.sses through a wire's full cross section at any point per unitrs8w9n9bgxq. cn2, vl of time is referred to as

  The direction of convention cq1:b-xluayus .gh(j *urrent is taken to be the direction that

  A coulomb per second is the same akzj irdx/h n2y6;ry9y.3j0drs

  Car batteries are rated in "amp-hours." Th +aobj,u +2 wiz;i,tpuis is a measure of their

  The resistance of a wire brngmg( m*g j1t ;oa0tfz7-v(fal y4)is defined as

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

  The resistance of a wire 1ob mk x04skc-is

  The resistivity of a wck2ped q6r t-np6k7/ alb2qk .ire depends on

  Which conducting material has the lowes7c v61r k:gp)x slw729szgh fsnl0q t)t resistivity value?

  Consider two copper wires. One has twicey o,ud ag04zjt52 q.d5t annz; the length of the other. How do the resistivities of these two w,tno5. znajzadg5t ;yu 4d0 2qires compare?

  Consider two copper wires. One has tw 5 j45 sg3ay/afrr4hdvice the length of the other. How do the resistances of these two wires compar4yv4sr5g 3a a/ 5drfhje?

  Consider two copper wires. One has twice the crol5c*f4jsbm 7w ss-sectional area of the other. How do the resistances of thesefwl*5 s 7cm4jb two wires compare?

  Consider two copper wires. One has twice the length and twice the crossw99nqp:fecv zn6 7y/6*yjm ki-sectional area of the otheey9qf kw*pn9/i:vm yj66 z7cnr. How do the resistances of these two wires compare?

  The length of a wire is doubled and the radius is doubled. By what factoa1yh*: cu e:cvr does the resi*1 v:a:cc yheustance change?

  How much more resistance does a 1.0 cm dia e:5ax5t;c yn:ti/qx bmeter rod have compared to a 2.0 cm diamebxycit;ex::5qa5 / nt ter rod of the same length and made of the same material?

  The resistivity of most common metalsq 0q jv fa1rgvj6wom:uz.cw 7,j3pb *2

  Negative temperature coefficients of 5r6 .rtijl6yro ga+q-resistivity

  What is 1 W equivalent)q5pz+ kz6.n rn 7xjkt1 lgwco;.dmt, to?

  A kilowatt-hour is equf)uty: pmi(c1ivalent to

  If the resistance in n vlz7l6y (t6n;/;w ncd tfvzek0a:y: a constant voltage circuit is doubled, the power dissipated by thav y w;ale;t/knvdf06 z(y :tzn:l6 7nct circuit will

  If the voltage across a circuit of constant resistance is doublen zmkf*z1 q4m/d, the power dissipfz*/zmn m1 4qkated by that circuit will

  If the resistance in a circuit with constarsjh m6-nrbq8lu mzc e0b)(4 ,nt current flowing is doubled, the power dissipated by thatmz80mrs q-bhn l4b(,6 ruce) j circuit will

  If the current flowing through a ci 69 l+0pzp2ieu gmq5 krcni(.zf 5aq1xj f)0ltrcuit of constant resistance is doubled, the power dissipated by thakgfq t)zqe(lr0f 5.xiua20z6 9+pp n5mci1j l t circuit will

  During a power demande486wgs3 adpz , the voltage output is reduced by 5.0%. By what percentagap3 sg 4d6ezw8e is the power on a resistor affected?

  A current that is sinusoidal with respect to time +ra:rc q sk0oq6::rdqu( ew5 ois referred to as

  Consider two copper wires each carrying a curren( r3p oouw2.let of 3.0 A. One wire has twice the dol( 32eupow r.iameter 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 6/;5rfx v icmxessentially zero at very low temperatures are referred to5 /mrv xif;c6x as

  What current is flowin-xc: mv*-7 uvfmtw3sa g if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating a 79 l41ekvsvjapparatus in 2.0 min. What is the aver1aevs 4k9lv7j age current?

  How much charge must j nd:mv73qlmc -;fvy+ pass by a point 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 flowmxl,r r4sh,kwj, yk5z8/g sv2ing 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, whichr4 slpi5nnvca; l- iv*42ome( draws 13.5 A of current, has been left on for 10 min. What is the net number of electrons l 4 l-*s;i2cv( imr54enpnoavthat have passed through the coffee maker?

  In an electroplating process, it is desired to depop/, 9o rrzub 4hx:zjh3sit 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 opz /r hjo9,3 zb:r4hxuf silver is 108.)

  What potential difference is requirelk8 d xgrb/-(,s ht:ktd to cause 4.00 A to flow through a resistance of 330 W?kgrht(/ 8 - k,l:bxtsd

  What is the voltage across a 5.0-W resistor if the current through it is 5.0;l9: e rxtkielgp8 *y1 A?

  A 4000-W resistor is connected across 220 V. What curvsne1ted1m,i;k+ei 8o o /qjz3tj :a6rent will flow?

  A light bulb operating at 1103:ay(/mz duiw V draws 1.40 A of current. What is its resistance?wiyd/ mz3(au:

  A 12-V battery is connected to a 100-W resa zu; c0/vfozy r86g7oistor. How many electrons flow through the wi; czg67 0 vuf/az8oryore in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The r a+f4/yop;d+ h:7pqvt,eymdmesistivity of copper my qdhp+ey7o+4 t,a;dfvp m:/is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a ti(z1m, ja 7iede+a7p circular rod 1.0 cm in diameter and 45 m long, if the resistivtid1 e,ape( i+7za7mjity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (resvuc858 zlq,n) a 1tmeeistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivity ,l4 9pl5mo nlw$1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measurre(lp +cpaqf;q + ou8,nha v7+es 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.321 mm) oroj8:1mew8wnichrome wire if it is connected to a 12.0-V battery. (The resistowjm oe:18rw 8ivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectang vx/s2h7chs;4 xgqmx. yp6ri+ular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it ca/ 4p+x7h;s.r s6mci ghy2xvqx rries 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 mm and a i -0z1zg6gkt5akduh,x+ut h/ 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 (rekya lvz: :.:rj+czb r-a5ivs8y0;kousistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistance(),o+5 wvsn -tupj zwa 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 resistivity of platilv0t q jubdr,0zo86 ;*xian pg)t/ ;wznum 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 deter,npg4*yvokb6 mine the melting point of indium. The resistance of the platinum wire ,y6nvb4p g k*ois $2.000 \; \Omega$ 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 thx63ww rjf,.gm5 lpk 2zrough an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is r-81o5nmik qt sr6(fhn ated at 1200 W. What current will it draw?

  A 150-W light bulb runq fo kb*x6y73qning on 110 V draws how much current?

  What is the nominal resistance of a 100-W light bulb designed to be used in a 126b*cqn zl r) 6wkw6z+p(y7o sd0-V circu+*6n z6 ko)6qcyzsr( wdlw7pbit?

  A toaster is rated 800 W at 120 V. What isym6i,nl y:eg/ the resistance of its heating elementnyg:ym 6iel/ ,?

  A 200-W resistor is rated atstpykp;y* l(9*x;v 0t 1bjiuj $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is iv- +ku.4thhmrated at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current k 1y0isx iulyl7)70oqdoes it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, what.t gx/qv/ yhx 5-s*pera,i3hv is its resistance?

  A 25-W soldering iron runs on 110 V. What is its rici2kay/k60r zcv j7ab zx b(rs6l09 8esistance?

  How much does it cost to operate a 25-W solderinzr8mzvn u2 )k4g iron for 8.0 hours, if energy cozrv248nm zku )sts $0.08/kWh?

  How much energy does a 100-W liggcrvk2 ue; (j i3j10fq(ojj s.ht bulb use in 8.0 hours?

  A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat en v(d ea1 *wzns/(6p(my ogrdq,ergy is produd y ( d,raon*esmp(z1q w(v6/gced?

  A battery is rated at 12 V and 160 A-h. How much energy does the battery storewzgcm3k*9f9*ph9nsz ?ckwm9 np9z**9hfg3zs

  How much energy does a 25-W soldqemz: f8ob hjgau: mt9*x.3n9c,5iw yering iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours p+oj-/z aiqp.ya.3xpfdf( sy9j 9zrz 9er day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimazf.p3ipaa99 jqyj (zf+rdso/.-yz x9te the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If el ex.mcdd7zua rof3v6 d6s 3;-jectricity costs 10 cents per kWh, how much does it cost to run the compute-sddv3 76 aej doz.m36ufrxc;r annually?

  The monthly (30 days) electric bill included the coy 8jbfi-bawoa/,a9 -s st of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W li9-aiwyba -s 8obj ,af/ght 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?

  The heating element in ap8+ d7y 7yrxjzn electric drier operates on 240 V and generates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, thz r7d+yjpy8 7xe 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 xrf ia.1an9 eg/h88 oqwpg iut0 6.h9x.+fzdqthrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs / nf;x7,i- c sumzu0kl.1j,,unqevnb $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. Howus;z pn5hvau2 0f.k ,e much current does it draw fromf0ezs;.un vkhu2,ap5 a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is conneci3kpvf ww., wnyf5r7.ted to a 120-V ac power source. What rms current flows through this devicwfpw . 7vk 35ny,r.fiwe?

  A 500-W device is connected to a 120-V ac power source. What8a2qcp 9 (ewoey*0 w;cav n;qp peak current flows pq*nq;ca e;2vap ww8e(9oy0cthrough this device?

  A 500-W device is connected to a 120-V ac power source. What4cv2)aszw6 hlgrc c /uk0r(f* is the peak voltage across this de6w0c f)2c (ulk rgrvh*4sca/zvice?

  The diameter of a copei4anw d(5b3uper wire 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 o4iue53wba d(nf copper is $8.5 \times 10^{22}$.)