Electrical resistivity of a given metallic wire depends upon :

Options

A. its length
B. its thickness
C. its shape
D. nature of the material

Answer

D

Explanation

Electrical resistivity of a metallic wire depends on number density of free electrons in the conductor which is the nature of material. i.e., `p prop (1)/(n), n =` number of free electrons per unit volume. It also depends on the tamperature of conductor.