A device that produces electricity h il;5rw l uixj-bj9io1fk7 )ew)tx//by transforming chemical energy into electrical energy is called x)hif l7j- xo5je /wtiiu;9)1r/k lbwa

  A car battery

  The total amount of charge that passes through a wire's full cross sectio(w:sn(w cgf y1n at any point pe(c1 : wnys(fgwr unit of time is referred to as

  The direction of conve 4, *dm -tsmurv2tj1irntion current is taken to be the direction that

  A coulomb per secondpxge s 3;gp :t5-ztv2l is the same as

  Car batteries are rated in "amp-hours." This is a ly0krw) p29) .yfm topmeasure of their

  The resistance of a wire is def5lj9su q3zqs;t-9z p oined as

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

  The resistance of a wirw;c6a:sde/ 2fdwjgvg+.ir8 de is

  The resistivity of a /+-a0 z 6rtu. saaihconhb09 nwire depends on

  Which conducting material has the .yxc 0n8+nnp .r u9qailowest resistivity value?

  Consider two copper wires. One has twice the length of the other. How d6511fhtf7 xjejucdm . o the resistivities of these two wire1ju57jedcm h6 xff1.t s compare?

  Consider two copper wires. One ht4*:8fp o rkpepajb-)whz6 c7gi (jl,as twice the length of the other. How do the resistances of thh7 zwk (bp:r) af *i4 jepcojp8g-l,t6ese two wires compare?

  Consider two copper wires. One i 01euu1s8 jpzhas twice the cross-sectional area of the other. How do the resistances of these two wires comji zesu81p1u0pare?

  Consider two copper wires. One has twice the length and ugn 8cc/oc/(i m-4dqg5eis d(twice the cross-sectional area of the other. How do the resistances of these two wiri8o 5(-i/geu csc 4nmc (/ddgqes compare?

  The length of a wire is doubled and the radius is doubled. By what facnftbm) xpu qd/,g+,7 wtor does t dumg,b+7pnqt ,fxw/)he resistance change?

  How much more resistance does a 1.0 cm diameter rod have compared ,zs j,rk, 0fqlpxkwy7/fdz7 / to a 2.0 cm diameter rod of the same length and madp, 7ffsq7z klx/,zr0wjdyk/, e of the same material?

  The resistivity of most com ardk: ygzs-mn2 .+*)gp/oxcx mon metals

  Negative temperature coefficients ofejk mi6p+um0 :ug(kz + resistivity

  What is 1 W equivalentsxk ttvg /4t/7i/k )73tfjcfr to?

  A kilowatt-hour is ez-wo lb,o7+rmunfnse-0t:*see-3 v hquivalent to

  If the resistance in a constant voltage circuit is doubled, the powevj1yqer u2xm65; ,- bl5 lqlchr dissipated by that circuil5lej bqurm hc-;5 2,vy61lxqt will

  If the voltage across a circuit of constant re:8i3vyceuu5 wsistance is doubled, the power dissipated by t euw8v:y5c iu3hat circuit will

  If the resistance in a circuit with constant current flowing gs4:r5d - lngmis doubled, the power d 5r4-lmg dns:gissipated by that circuit will

  If the current flowing throheb yd nsfku1zerss.38s i;-3 ( pm- yt);/epyugh a circuit of constant resistance is doubled, the power dissipated by that(s /d;f) h3m;iperb u-1.- ynse3ye8 kystspz circuit will

  During a power demand, the voltage output is reducex8o v it:-xe 7on1 mhnajtab1lw6)v,. d by 5.0%. By what percentage is th6t)xa n v -8ivo1.,m n wl7o:jteaxh1be power on a resistor affected?

  A current that is sinp amtuehlk.l*(te .2/usoidal with respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wire has twic hednrf6il ) 9dv5)zcv9lc*:,teccf0e the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that ihedt c9 frvf)9l i0*d:cc z5v6,nelc) n the larger diameter wire is

  Materials in which the resistivity bec ;yrm qp8*s/noomes essentially zero at very low temperatures ar*n 8so;m/yrpq e referred to as

  What current is flowiii x5i(d)yg6qng if 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparu3.e kr1jak h:atus in 2.0 min. What is the aver krea13h.uj:kage current?

  How much charge must pass by a point in 10 s for the current to be 1p fzwze7 o)4 zrr05zz0.50 A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowin (gi(y: +ad)3hfks65qto6 n8di gr tblg 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 bee6 *io*ovb) ciqn left on for 10 min. What is the net number of electrons that have pasooc)b** i viq6sed through the coffee maker?

  In an electroplating process, it is desirewi(9wb (sicor-i9qd0d 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 dew9o cs9iq w bii(r0(d-posit this much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required to cause 4.00slo bxxtye *c.98vd*x8j/x5)jrc7 if A to flow through a resistance of /o57.cj9rx*xv*j i8 l8sx deyf )bxtc330 W?

  What is the voltage across a 5.0-W resistor if the current through it is 5.0 b1,wzmq sat, +A?

  A 4000-W resistor is connected across 2)ua tb;zfifi6p5qn jwe7(ge zm e76 ut3b/u* :20 V. What current will flow?

  A light bulb operatinszp pry9 o/o)zb dl623g at 110 V draws 1.40 A of current. What is its resistance?)oyz3pp/ so lr9zb2 6d

  A 12-V battery is connected 8(y1nr q/i lwhto a 100-W resistor. How many electrons flow through the wireh nry1wi8/(ql in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The resisgctxcq8 +u nm3;r6tn, tivity of copper icg u,t 6c n8;r+mnqt3xs $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm 18ku( sn8c5yc njlx75rstt2kin diameter and 45 m long, if the res 88sknut7l jk5sn2tcxy (r5 1cistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of coppermue8.ffr kw7(-yig5dgpn6 0 p wire (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 (resilur, i)9i on3rstivity $1.68 \times 10^{-8} \; \Omega \cdot m$) 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)9mla e22tlye/ cu u-0oea7zd is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the ra8wmv o*gcrde29 ue0 /kdius is 0.321 mm) nichrome wium28k/vcre oe0d *w g9re 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 cm x vp0 3hc dgu*c9-/y tz3arvah.2.0 cm. What is th 0pta*c3.ahv c-vgyd/3h9r uze voltage 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 rq52jmppq/ 7u 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 wirkf0r4 ,afhg v q vzxb3t,xu;65e (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 resistancezk ckym rga5g- /g,4hh3a- j-r 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 platinum is vbq8(w lsyvx;5 ibz7,$3.9 \times 10^{-3} /^{\circ}C$. 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 o+2a-s0x nw4-tspmb l indium. The resistance of the platinum wire p 2a+bo-s ntx0wl s4-mis $2.000 \; \Omega$ 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 throxql vj,3c4glcjfq4fbjdg *::k) 7y fsr:77jvugh an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What mpr9q2 l2owr0, ude;fcurrent will it draw?

  A 150-W light bulb running on 110 V draws how m4kn3k /e tp7bjuch current?

  What is the nominal resistance of a 10b+o g-pr y(u; :4+f*cxjqzrj v0-W light bulb designed to be used in a 120-V ci 4b*+(rjy;rfp v xq-uz+ o:gjcrcuit?

  A toaster is rated 800 W at 120 u (fla5k7-ydu -9nnz nV. What is the resistance of its heating element79( 5nzuuanl-dyn k-f?

  A 200-W resistor is rated g:aif.:q6xw;rx6/uprl3mw4mee 5k b at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratedkr1 a0y7p,zcy at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. uph2:ot0;iph 37r fdu If it is used at 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used at 8q*)kcf(juot4 cf f)m 120 V, what is its resistance?

  A 25-W soldering iron runs o9v0o snl1m3cl n 110 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if enci6gg5/k fm x9ergy costs gk9 fmcixg56/ $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 hiv (af( zfy a3wx)w/7moo9s-yours?

  A 1500-W heater is connected to a 120-V line for 2 ing:xq74k 1c(fvd 7fu.0 hours. How much heat energy id( uiqgkcf:n4f1 v 77xs produced?

  A battery is rated at 12 V and 160 A-h. How much energy does pxp(+i3drd3bc,3 p;uglcqy ** a mp,vthe battery store?ym(v+d*pa,3;dc ig3 q p3 ,pblcx*upr

  How much energy does a 25-W solderingb,z5h3sjio+ 6g1xa j4gokt w6 iron use in 8.0 hours?

  A 100-W driveway light bulb is on 10 hours per day. Assuming the powerx,y--5*fe d ; ucq9/hhjugf*dm:wn pf company charges 10 cents for each kilowatt-hourne um dp-,hwu*x:f 9fd-/*hc5;ygq f j of electricity used, estimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per day. If elw;x1zegl6w1 b)sfw:aectri zeas;lbw:11g6)w f xwcity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of running a ihx(/1py*pp0jt,i v n central air-conditioning unit for*nh1,x v(pi pytpji0/ 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?

  The heating element ikhhtw.is qb j5bf 84w-hr tgo .s4)x4.n an 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, 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 elemr hf-5. o4hkh4jt. s b 4).bgqs8witxwent?

  14 A of current flows tht+me qd348gh hb3 s;zfrough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costsjgt2rsk 6g5fs;7l jv/ 1e ync8 $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. How much c. mcksgbal7 o3p(q8/zff tx+9urrent does it draw from 9+tmsczb/8 (okglp xf7 f3.qa a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms c+4yv, ff;rf dwurrent flows through this df;ydv r f+,f4wevice?

  A 500-W device is connected toz. yl p fmke1d2yctjy ,e4-9a8cb85ic a 120-V ac power source. What peak current flows 5yac-j c9mb zf8yl,yei 21dep.t 84kcthrough this device?

  A 500-W device is connected to a 120-V ac power source. Whax zb(fqy2:sp+ t is the peak voltage across this p:2 +fzb sqyx(device?

  The diameter of a cog:ehq 2ui 8fr;ky4)qlpper 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 8yh r2q e;4gkl:f)iqu this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter of copper is $8.5 \times 10^{22}$.)