Question

Define resistivity of the conductor and also briefly discuss its factors, on which it depends.​

Answer 1

Resistivity is a measure of the resistance of a given size of a specific material to electrical conduction.

Resistivity may also be referred to as the specific electrical resistance, or volume resistivity, although these terms are less widely used.

The formula for resistivity is given by

p=R*A/l

where p is resistivity, R is the resistance, A is area of cross-section, l is length of material.

Resistivity of any material depends on:-

1. Area of cross-section of the material. Resistivity is directly proportional to it. As area increases, resistivity increases.

2. Length of the material. Resistivity is indirectly proportional to length meaning if length increases, resistivity decreases.ρρρρΡΞρ