Question

On which basis does the working of metal detector depend .1 light energy.2 Heat energy.3 sound energy.4electromagnet

Answer 1

4. electromagnet is correct.

Answer 2

Electromagnet is type of the magnet in the the magnetic part is produce by the electric current and in this magnetic field get disappears at the time of current turned off.

Therefore the electromagnets is basically consist of the wire into the coil and hope this answer will be suitable for the student.