Starter motors operate on the principle that ________.

Starter motors are designed to convert electrical energy into mechanical energy to initiate the engine's operation. The principle behind their functionality involves the interaction between magnetic fields produced by the stator and the rotor (or armature) of the motor.

When current flows through the armature winding, it generates a magnetic field. This magnetic field interacts with the stationary field produced by the field coils or permanent magnets, resulting in a rotational force. The armature rotates from a strong magnetic field toward a weaker magnetic field, creating the necessary torque to turn the engine's flywheel and start the engine.

Understanding that the armature seeks to move from areas of strong magnetic influence to areas of weaker influence is crucial, as it underpins the design and methodology of how starter motors work effectively. This principle of magnetic attraction and repulsion is vital in ensuring the motor generates enough force to overcome the initial resistance of the engine during the starting phase.