Question

14. (a) What do you understand by the resistivity of a substance ?
(b) A wire is 10 m long, 0.2 mm in diameter and has a resistance of 10 . Calculate the resistivity of its
material ?​

Answer 1

Resistivity quantifies how strongly a material opposes the flow of electrons through it. If a material has low resistivity, it means it offers less resistance to the electric current and if a sustance has high resistivity means high resistance of electric current.