Answer:
An acoustic guitar works without the need of pick-ups, instead they use the resonance of the wood and the hollow body of the guitar to naturally amplify the vibrations coming from the strings which are tuned to different tensions. Electric Guitars are set up similarly but instead the pick ups between the bridge and the neck PICK UP the vibrations from the strings through a series of copper coils that are wrapped thousands of times around magnets. Thus creating an output signal that can be manipulated through effect pedals and amplifiers.