Answer the following:
i) Define resistivity of a material.
ii) Draw the voltage-current graph for ohmic and non-ohmic materials.
iii) Give examples of ohmic and non-ohmic materials.

Question

anonymous · Answer

(Physics / General Physics) the electrical property of a material that determines the resistance of a piece of given dimensions. It is equal to RA/l, where R is the resistance, A the cross-sectional area, and l the length, and is the reciprocal of conductivity. It is measured in ohms. Symbol ρ Former name specific resistance.

anonymous · Answer

It is the resistance offered by a meter cube of the material when the current flows in a direction perpendicular to the opposite faces..