Question

on which basic does the working of meatl detector depend

Answer 1

Metal detector. The basis or principle on which the metal detector works is as follows.

"Along with the electromagnetic induction, metal detectors may contain 1 or more than 1 induction coils.''

In most of the original metal detectors, the 1 induction coil is situated in it.

Metal detectors detects the following metals - Gold, Iron, Lead, Silver and other metals. Although they are mostly used to detect gold metal.

Answer 2

Metal detectors are used to uncover relics, detect guns, knives and mines that are buried underground.

Uses: They are used by the military for security purposes.  

Principle: The principle behind metal detectors is "Use electricity to make magnetism and magnetism to make electricity".

Working: It consists of a transmitter coil made of a copper wire which creates a magnetic field around it when electrified.  

• If the detector is over a metal, the atoms inside the metal are affected by the moving magnetic field which in turn creates some electrical activity in the metal.  
• This results in the formation of a second magnetic field around the metal which is responsible for triggering the alarm through the electricity created.