A wire of 0.14mm diameter and 9.6micro-ohm-cm is 440 cm long. Find the resistance of the wire
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D = 0.14 mm
r = 0.07 mm
r^2 = (0.07 x 10^-3)^2 m^2
p = 9.6 x 10^-6 ohm cm = 9.6 x 10^-8 ohm* m
L = 440 cm = 4.40 m
A = 2 * pi * r^2
A = 2 * pi * (0.07 x 10^-6) m^2
A = 4.398e-7
R = p * L / A
R = (9.6 e-8 * 4.40 ) / 4.398e-7
R = 0.96 ohm is the resistance of the wire
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