Question

Calculate resistivity of material of resistance 10 ohm and length 1m (diameter-0.2mm)​

Answer 1

Answer:

7.96 x 10∧6 ohm-meter

Explanation:

R = rho L / A              A = π r² = 3.14 x (0.02 x10∧-3)² = 0.1256 x 10∧-6 m²

rho = RA / L                      

    = 10 x 1 /  0.1256 x 10∧-6 = 7.96 x 10∧6 ohm-meter