Question

how can we demagnetise a magnet...

some one telll

please

Answer 1

I look on Google

Here is wat it said

One way to make a magnet is by applying an electrical field, 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.

Answer 2

Apply AC current to demagnetise a magnet. 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 , u can pass AC current through solenoid.
☺️ Hope this helps you .