Each magnetic field contains energy, also called magnetic energy. ... Because a magnetic field is generated by electric currents, the magnetic energy is an energy form of moving charge carriers (electrons). To understand where this energy comes from, it's worth taking a look at how a magnetic field works.
Chemical energy, Energy stored in the bonds of chemical compounds. Chemical energy may be released during a chemical reaction, often in the form of heat; such reactions are called exothermic. ... The chemical energy in food is converted by the body into mechanical energy and heat.