Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Njem: Ihe ndị mmadụ na-eme nke na-eme ka ọkụ eletrik na-agụnye mmụba nke electrons conduction na wires metal dị ka eriri eletrik nke na-enye ike eletrik n'ebe dị anya na obere wires n'ime ngwá eletrik na ngwá electronic. Eddy currents bụ ọkụ eletrik nke na-apụta na ndị na-eduzi ihe na-ekpughe na mpaghara magnet na-agbanwe. N'otu aka ahụ, a na-ahụ ọkụ eletrik, karịsịa n'elu, nke ndị na-eduzi ndị e kpughepụrụ nye ebili mmiri electromagnetic. Mgbe e nwere ọkụ eletrik na-agba n'ụgbọelu redio, a na-emepụta ụzarị redio.  Ajụjụ: Olee ụdị waya e ji arụ eriri eletrik?
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