Armature Coil Definition
An armature coil is a critical part of any electrical motor, whether the motor uses alternating or direct current. It is the part directly responsible for transforming electrical energy into motion.
Features
An armature, also called a rotor, is a rotating part inside an electric motor. One or more coils of wire are mounted on it. It is located between two or more magnets so that it is constantly exposed to a magnetic field.
Function
When the motor is switched on, current flows through the coils on the armature. This gives them a magnetic field in accordance with Oersted's Principle. The coils are oriented in such a way that their magnetic fields push against the fields of the magnets they are mounted between, causing the armature to rotate. The rotating armature turns the motor shaft to which it is attached.
Other Considerations
The armature itself is made out of a material with high magnetic responsiveness like steel or iron. It holds on to some of the magnetic field generated by the coils, multiplying their effectiveness.
