calculate the Resistance of an aluminum p= 2.8 * 10-8Ωm wire that is 2m long and of circular cross section with a diameter of 1.5mm
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Diameter = 1.5 mm
= 0.15 cm
= 0.0015 m
Radius = 0.00075
Area = πr^2
= 3.14 x (0.00075)^2
=0.002355 m^2
Resistance = p x l / A
= 2.8 x 10^-8 x 2 / 0.002355
= 2.8 x 2 / 235500
=54/2355000
= 0.15 cm
= 0.0015 m
Radius = 0.00075
Area = πr^2
= 3.14 x (0.00075)^2
=0.002355 m^2
Resistance = p x l / A
= 2.8 x 10^-8 x 2 / 0.002355
= 2.8 x 2 / 235500
=54/2355000
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