Question

Resistence of a wire of length 1m is 26ohm at 20°c.If diameter of wire is 0.33mm. What will be the resistivity of the metal at that temperature?

Answer 1

Resistivity = R A / L = 26 * π 0.165² * 10⁻⁶ / 1 
             = 2.22 * 10⁻⁶ Ohm-m