Find the resistivity of a wire of diameter 2 mm, length 37.9 m and resistance 2 Ω
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Diameter =2mm, radius 1 mm
Area = π (mm)^2 = πe-6 m^2
ρ=AR/L = πe-6*2/37.9 = 1.66 e-7 Ωm
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Area = π (mm)^2 = πe-6 m^2
ρ=AR/L = πe-6*2/37.9 = 1.66 e-7 Ωm
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