Question

state and explain ohm's law .mention its limitation

Answer 1

Ohms law states that the current flowing between two points in a conductor is ohms law states that current flowing between two points in a conductor is directly proportional to the potential difference between the two points provided temperature is kept constant.
I is directly proportional to V
V/I= R (constant)the constant is resistance.

limitations of ohms law:

it is valid for metal conductors provided temperature and other physical conditions remain constant. the resistance of the material changes with temperature. it is not applicable for a gaseous conductor. it is not applicable to semiconducters like germanium and silicon.

Answer 2

ohm's law deals with the relation between voltage and current in an ideal conductor ...it states that the potential difference (voltage) across an ideal conductor is directly proportional to current passing through it.... the constant of proportionality is called resistance...v=IR.....
limitations: it cannot be applied to unilateral networks....a. unilateral networks has a unilateral element like diode,transistors




I hope this will help u :)