Question

What is resistivity and drive the formula of resistivity

Answer 1

Answer:

Resistivity is the resistance per unit length and cross-sectional area. ... We know that R = ρ L / A. Thus we can derive the expression for resistivity from this formula. ρ = R A / L, where R is the resistance in ohms, A is the area of cross-section in square meters and L is the length in meters.