N'ihe okike, a na-emepụta emf mgbe ọ bụla mgbanwe nke magnetik na-eme site na elu. Mgbanwe nke magnetik ụwa n'oge oké ifufe na-eme ka mmiri dị na eletriki eletrik dị ka akara nke magnetik na-agbanwe ma na-egbutu ndị na-eduzi. Ajụjụ: Igwe eletriki eletriki nwere ike inye Emf?
Ngwaọrụ ndị nwere ike inye emf gụnyere sel electrochemical