Disclosed is an electric motor with a sensor, especially for sensing the revolution number. Said sensor contains at least one signal generating unit (20) producing a magnetic field, at least one magnetic-field sensor (28, 30) as a signal detection unit and signal-conductive elements (22, 24, 26). Said signal-conductive elements (22, 23, 26), which contain a magneto-conductive material, routes the signal of the magnetic-field generating element (20) to at least one magnetic-field sensor (28, 30). At least one electro-conductive element (40, 42, 44) is mounted virtually along the signal-conductive element (22, 24, 26).