Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  N'ụzọ: Ngwaọrụ ndị nwere ike inye emf gụnyere sel electrochemical, ngwaọrụ thermoelectric, sel anyanwụ, photodiodes, ndị na-emepụta ọkụ eletrik, ndị na-agbanwe agbanwe na ọbụna ndị na-emepụta Van de Graaff. N'okike, a na-emepụta emf mgbe ọ bụla mgbanwe magnetik na-eme site n'elu. Mgbanwe nke magnetik ụwa n'oge oké ifufe na-eme ka e nwee ọkụ eletrik n'ebe ndị e nwere ọkụ eletrik n'ihi na a na-agbanwe usoro magnetik ma na-egbutu ya n'etiti ndị na-eduzi ọkụ eletrik.  Ajụjụ: sel elektrokemikal hà nwere ike inye Emf?
Ngwaọrụ ndị nwere ike inye emf gụnyere sel electrochemical