## Ohm’s Law Definition

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The current flowing through any conductor is directly proportional to the potential difference between two endpoints of the conductor at a constant temperature.

where, ‘R’ is a constant known as the resistance of the conductor.

The Ohm’s law can be applied to both AC and DC circuits.

## Limitations of Ohm’s law

1. It does not hold good for non-metallic conductors such as silicon carbide. The law for them is

V = KI^{m}

where K and m are constants.

2. It does not hold good for non-linear devices such as zener diodes, voltage regulators, etc.

3. This law cannot be applied to the networks containing unilateral elements.