Question

what is LED?
use of this.

Answer 1

light emitting diode....it is use for cheep and efficiently light...

Answer 2

$\huge\underline\bold\red{♡Answer♡}$

A light-emitting diode (LED) is a semiconductor device that emits light when an electric current is passed through it. Light is produced when the particles that carry the current (known as electrons and holes) combine together within the semiconductor material.