please, help me with this! i beg you!
question: calculate the resistance of a piece of 20-gauge copper wire 2.00 m long. The cross-sectional area of 20-gauge wire is 0.5176 square millimeter.
thanx. please help me solve this...........
2007-03-23 08:56:07 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
the resistance for 20 AWG wire is 10.3632 ohms per 1000 ft. so divide 10.3632 by 1000 then convert to meters then multiply by 2.
so
10.3632/1000 = .0103632 per foot
2 meterse is 6.56 feet
so 6.56 * .0103632 = 0.067982592 ohms
so 0.06798 Ohms resistance
2007-03-23 09:02:45 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Resistivity of copper = 1.7*10^-8 ohm-m = rho
R = rho*l/A
l = length, A = area.
2007-03-23 09:20:18 · answer #2 · answered by sojsail 7 · 0⤊ 0⤋
Get your book out and read the chapters on calculating resistance. Do your own work.
2007-03-23 08:58:59 · answer #3 · answered by Wolverine 2 · 1⤊ 0⤋