Galvanic cell

A galvanic cell is a device that converts chemical energy into electrical energy through a chemical reaction. It consists of two different metals or materials immersed in solutions containing their ions. When connected by a wire, electrons flow from one metal (the anode) where oxidation occurs, to the other (the cathode) where reduction takes place. This flow of electrons generates an electric current that can power devices. Galvanic cells are the fundamental working principle behind batteries, providing portable and stored electrical energy derived from chemical reactions.