Question

give reason why electromagnets are better than permanent magnet​

Answer 1

A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field.  As the name suggests, a permanent magnet is 'permanent'. This means that it always has a magnetic field and will display a magnetic behavior at all times.

An electromagnet is made from a coil of wire which acts as a magnet when an electric current passes through it. Often an electromagnet is wrapped around a core of ferromagnetic material like steel, which enhances the magnetic field produced by the coil.

Answer 2

Electromagnet is better than Permanent magnet bcoz of the following reasons....:-

1) More magnetic strength
2) Magnetic Power as long as we want
3)Can be used everywhere where current is available