Question

a). What are the factors on which resistance of a conductor depends .
b). What is resistivity .
c). What is unit of resistivity.

Answer 1

The electrical resistivity is the electrical resistance per unit length and per unit of cross-sectional area at a specified temperature. The SI unit of electrical resistivity is the ohm⋅metre (Ω⋅m). It is commonly represented by the Greek letter ρ, rho.

Answer 2

A). Factors on which the resistance of a conductor depends are:

(a)  Length of the conductor

(b)  Cross-sectional area of the conductor

(c)  Nature of the material of the conductor

Temperature
B). Resistivity is a fundamental property of a material that quantifies how strongly that material opposes the flow of electric current. 
C) SI Unit - Ohm metre