Dee ihe na-aga n'ihu na paragraf a - N'ịghọta onyinye ya n'ịmepụta sayensị eletrik ọgbara ọhụrụ, nkwekọrịta mba ụwa, nke e bịanyere aka na ya na 1881 International Exposition of Electricity
, guzobere amper dị ka ọkọlọtọ nke eletriki eletrik, tinyere coulomb, volt, ohm, watt na farad, nke a na-akpọ, n'otu n'otu, mgbe ndị Ampère oge Charles-Augustin de Coulomb nke France, Alessandro Volta nke Italy, Georg Ohm nke Germany, James Watt nke Scotland na Michael Faraday nke England. Aha Ampère bụ otu n'ime aha iri asaa na abụọ e dere n'elu Ụlọ Elu Eiffel.