A wire of diameter 0.650 mm and length 60.0 m has a measured resistance of 1.80 ?. What is the resistivity of the wire? ? · m
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Given diameter, D = 0.650 mm = 0.650 x 10^-3 m Cross-sectional area, A = π(D/2)^2 A = π(0.650 x 10^-3 / 2)^2 A = π(0.325 x 10^-3)^2 A = π(0.105625 x 10^-6) A = 3.14159 x 0.105625 x 10^-6 A = 3.14159 x 10^-6 m^2 A = 3.14159 x 10^-6 m^2 Show more…
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