 
 <translate> Quoc: Three discoveries challenged this foundation of magnetism, though. First, in 1819, Hans Christian Ørsted discovered that an electric current generates a magnetic field encircling it. Then in 1820, André-Marie Ampère showed that parallel wires having currents in the same direction attract one another. Finally, Jean-Baptiste Biot and Félix Savart discovered the Biot -- Savart law in 1820, which correctly predicts the magnetic field around any current-carrying wire.

Answer this question based on the passage: who discovered the magnetic field of electric current?
HW Chung: OK, some thoughts: <ibo> Quoc: Otú ọ dị, nchọpụta atọ mere ka a ghara ikwere na magnetism. Nke mbụ, na 1819, Hans Christian Ørsted chọpụtara na ọkụ eletrik na-eme ka e nwee ikike ndọta nke na-agba ya gburugburu. Mgbe ahụ, na 1820, André-Marie Ampère gosiri na waya ndị yiri ibe ha bụ́ ndị na-agba otu ebe na-adọta ibe ha. N'ikpeazụ, Jean-Baptiste Biot na Félix Savart chọpụtara iwu Biot-Savart n'afọ 1820, nke na-ekwu n'ụzọ ziri ezi na magnetik dị gburugburu waya ọ bụla na-ebu ọkụ.  Zaa ajụjụ a dabere n'akụkụ Akwụkwọ Nsọ a: ònye chọpụtara magnetik nke ọkụ eletrik? HW Chung: OK, ụfọdụ echiche: 