Question

What isohm,s law limitation

Answer 1

Limitations of Ohm's Law. Although Ohm's law is an important principle in the field of electronics, it cannot be considered as an actual physical law. We know that as per ohm's law voltage / current = a constant and that constant is the resistance. But the resistance does not remain constant all the time.

Answer 2

The temperature and pressure,  that is the physical conditions of the conductor must remain constant for ohms law to be true.