Question

what is solenoid ????????

Answer 1

A solenoid is a coil of insulated or enameled wire wound on a rod-shaped form made of solid iron, solid steel, or powdered iron. Devices of this kind can be used as electromagnets, as inductors in electronic circuits, and as miniature wireless receiving antennas.

Answer 2

Hey mate

Here's your answer__

A solenoid is just a coil of wire, but when you run a current through it, you create an electromagnet. Since this is by far the most useful application of a coil of wire, it's not surprising that when you say the word 'solenoid,' people tend to assume you mean electromagnet. Electromagnets are particularly useful because, unlike regular magnets, they can be switched on and off, and strengthened by increasing the current flowing through them.

Hope it helps☺☺

Regard
@Yusuf