(a) Name and state the law which relates the potential difference and current in a conductor,
(b) What is the necessary condition for a conductor to obey the law named above in part(a)?
(a) Ohm's law relates the potential difference and the current flowing through a conductor. Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.
(b) Necessary conditions are:-
1. It should be an ohmic conductor.
2. Temperature and physical conditions should be same.