Electromagnetic Induction and the Electric Motor

Core concept

In a generator, mechanical energy (like a turbine spun by water, wind, or steam) rotates a coil within a magnetic field, continuously changing the magnetic flux through the coil and inducing an alternating current. In a motor, current flowing through a coil placed in a magnetic field experiences a force (following the left-hand rule for motors), causing the coil to rotate — this principle powers countless devices, from electric fans and washing machines to electric vehicles.