Question

what is solenoid............​

Answer 1

Explanation:

A solenoid is a coil of insulated wire wound on a rod-shaped form made of solid iron, solid steel, or powdered iron which produces magnetic field when electric current passed through it. It is a electromechanical device. Devices of this kind can be used as electromagnets, as inductors in electronic circuits etc..

Answer 2

Explanation:

A solenoid is a type of electromagnet, the purpose of which is to generate a controlled magnetic field through a coil wound into a tightly packed helix. The coil can be arranged to produce a uniform magnetic field in a volume of space when an electric current is passed through it.