St. Louis motor

The St. Louis motor is a classic demonstration of an electric motor, typically featuring a large coil of wire mounted between the poles of a horseshoe magnet. When current is passed through the coil, it experiences a force due to the interaction of the magnetic field and the current, causing the coil to rotate. This rotation is maintained by a commutator, which periodically reverses the direction of the current, ensuring continuous motion. The St. Louis motor exemplifies the basic principles of electromagnetism and the operation of a DC motor.