Question

why does the electrical resistivity of a given metallic wire depends on the nature of the material​

Answer 1

Answer:

because the resistance of a wire depends upon the nature of the material and resistivity of a material is it's resistance per square metre.

Answer 2

Electrical resistivity of a given metallic wire depends on number density of free electrons in the conductor which is the nature of material, i.e., number of free electrons per unit volume. It also depends on the temperature of conductor.