Question

working principle of solenoid.explain

Answer 1

The solenoid consists of a coil of wire with an iron plunger that is allowed to move through the center of the coil. ... When the coil is energized , the resulting magnetic field pulls the plunger to the middle of the coil.

Answer 2

An electric current through the coil creates a magnetic field. The magnetic field exerts a force on the plunger. As a result, the plunger is pulled toward the centre of the coil so that the orifice opens. This is the basic principle that is used to open and close solenoidvalves.