Electro Magnet Small 172×320 Medium 343×640 Large 549×1024 Download Tiff Original 1287×2400 | (674.3 KB) Description A type of magnet whose magnetic field is produced by the flow of electric current. The magnetic field disappears when the current ceases. Keywords device, electro, instrumentality, instrumentation, magnet, magnetic, magnetron Galleries Miscellaneous Tools Source: Government Printing Office Official Gazette (Washingon, DC: Government Printing Office, 1912)