Electromagnetic properties in heating metals

The concept of electromagnetic induction helps not only in electromagnetism, but also in other industries. The big disadvantage of the electromagnetic system is the heat that is released both in the coil and in the core. But this thing is very useful for heating metals.

The metal part is a conductor of current. There are a lot of charged particles in the metal part. The coil has an alternating electric field with big a frequency and amplitude, which leads to the thermal motion of charged particles in the middle of the metal part.

These videos can help you understand how it works