An electric guitar is a guitar that uses one or more pickups to convert the vibration of its strings into electrical signals. The vibration occurs when a guitarist strums, plucks, fingerpicks, or taps the strings. The pickup used to sense the vibration generally uses electromagnetic induction to do so, though other technologies exist. In any case, the signal generated by an electric guitar is too weak to drive a loudspeaker, so it is sent to a guitar amplifier before being sent to the speaker, which converts it into audible sound.
where does an electric guitar get its power from
the vibration of its strings