what is resistivity class 10

Resistivity is a property of a material that determines how well it can resist the flow of electric current. It is defined as the resistance offered by the material per unit length for a unit cross-section. The SI unit of resistivity is ohm-meter. Resistivity is proportional to the materials length and inversely proportional to its cross-sectional area. The resistivity of conductors is low compared to the insulators’ resistivity. Resistivity increases linearly with temperature. Therefore, resistivity depends on temperature.