Mgbe a na-enye nri na-agbanwe agbanwe n'ime ụda, magnet na-aghọ electromagnet.Ntuziaka dị ugbu a na-agbanwe mgbe niile, na electromagnet na-aga n'ihu na-aga n'ihu n'ihi "mgbanwe ike nke waya na-eme ka ọ dị na magnetik", na-eme ka mpempe akwụkwọ na-ama jijiji azụ na azụ.Sterio nwere ụda.
Ihe ndọta dị na mpi ahụ gụnyere ferrite magnet na NdFeB magnet.Dịka ngwa ahụ siri kwuo, a na-eji magnetik NdFeB eme ihe na ngwaahịa eletrọnịkị, dị ka diski ike, ekwentị mkpanaaka, ekweisi na ngwa batrị.Ụda ahụ na-ada ụda.