Transcription: An electric motor converts electrical energy into mechanical energy. A DC motor uses direct current electricity that flows continuously in only one direction around a circuit. A DC motor consists of an armature that rotates within a magnetic field. The armature has a coil of wire wrapped around an iron core. A source of electricity is connected to brushes which make contact with the commutator on the armature. The commutator is a kind of switch that changes the direction of current flow in the coil as it turns. The electric current flows from the source to the motor and back to the source in o ...
(.mp3)