A pụkwara ịkọwa alternating current dị ka? N'iburu ajụjụ nke mbụ n'uche, dee ihe gbara ya gburugburu bụ́ nke ga-enye azịza ya. Ọ nwere ike ịbụ 1 - 20 ahịrịokwu. Ihe ndị gbara ya gburugburu:
N'afọ 1893, George Westinghouse meriri n'ọsọ nke iji ọkụ eletrik na-agbanwe agbanwe mụnye ọkụ maka ihe ngosi World's Columbian Exposition nke 1893 e mere na Chicago, na-eji otu nde dollar merie nke General Electric. A na-egosi ngwá eletrik n'otu ụlọ dị n'Ụlọ Ihe Nkiri Ụwa a. Ọ bụ ihe omume dị mkpa n'akụkọ ihe mere eme nke ike AC, dị ka Westinghouse gosipụtara nchekwa, ntụkwasị obi, na arụmọrụ nke usoro mgbanwe mgbanwe zuru oke na ọha na eze America. Na Ngosi Columbian, n'okpuru ọkọlọtọ na-ekwupụta "Tesla Polyphase System", Tesla gosipụtara usoro mmetụta eletrik emere na mbụ na America na Europe, gụnyere iji voltaji dị elu, nke dị elu na-agbanwe agbanwe iji mee ka oriọna ikuku na-enweghị ikuku na-enwu.: 79 Otu onye na-ekiri kwuru: