<Tr> <Th_colspan="2"> Playing range </Th> </Tr> <Tr> <Td_colspan="2"> (a standard tuned guitar) </Td> </Tr> <P> 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 . </P> <P> Since the output of an electric guitar is an electric signal, it can be electronically altered by to change the timbre of the sound . Often, the signal is modified using effects such as reverb and distortion and "overdrive", the latter effect is considered a key element of electric blues guitar music and rock guitar playing . </P>

Where does an electric guitar get its power from