Question

Explain briefly how a magnet, can be demagnetised using an alternating current?

Answer 1

Apply AC Current To Demagnetize a Magnet. One way to make amagnet is by applying an electrical field (electromagnet), so it makes sense you can use alternating current to removemagnetism, too. ... The core of the material may retain a slightmagnetic field due to hysteresis.

Answer 2

Answer:

One way to make a magnet is by applying an electrical field (electromagnet), so it makes sense you can use alternating current to remove magnetism, too. To do this, you pass AC current through a solenoid. Start with a higher current and slowly reduce it until it's zero.