@smartviewtech1: You can generate small electrical power by using a copper coil wire, a magnet, and a speaker based on the principle of electromagnetic induction. Wrap insulated copper wire into a coil and connect the ends to the terminals of a speaker or small load. When a magnet is moved back and forth inside or near the coil, it creates a changing magnetic field that induces a small electric current in the wire. #power #copper #light #speaker #besafe