Question

What is electrical resistivity? What is it's SI unit , explain on which factors electrical resistivity depends?

Answer 1

Dear student The resitivity of the material is the resistance of that conductor in per unit length and per unit cross sectional area. The resitivity of a conductor is can be find by using Formula : Resistivity = Resistance ×( Area of cross section /lenth of the wire) SI Unit of Resistivity is ohm- metre. Resistivity of a material is depends upon the factors . 1) Nature of the conductor 2) Temperature of the conductor But it is not depend upon the shape and size of the conductor Regards