Eddy currents are current loops formed over conductor surfaces due to changing magnetic flux. They are useful in induction heating, levitating, electromagnetic damping, and electromagnetic braking. They can be minimized by adding slots in the conductor surface & laminating.

What are eddy currents and how they are minimized?

We can minimise the eddy current by the following methods: The resistance of the core should be increased. In transformers, the thin sheets of steel in the core should be insulated from each other by a thin layer of varnish. As the laminations are thin, they will have relatively high resistance.

How are eddy currents Minimised Class 12?

Laminations are made of materials which are insulators. Hence laminating a core can reduce the currents. In a transformer, a changing current (usually alternating current) is allowed to flow through a coil of wire wound around a magnetic material (like iron).