How did Michael Faraday’s discovery of electromagnetic induction lead to electric generators?

Michael Faraday’s discovery of electromagnetic induction in 1831 provided the fundamental physical principle for the electric generator. Faraday observed that moving a permanent magnet into and out of a coil of wire, or moving a conductor near a stationary magnet, induced an electric current in the wire.12

He realized that a continuous current could be generated by rotating a copper disk between the poles of a powerful magnet, with leads connected to the disk’s rim and center. This device, known as the first dynamo, demonstrated that mechanical energy could be converted into electrical energy by cutting "lines of force" within a magnetic field.1

Modern generators operate on this same principle: voltage is induced in coils by the rate of change of the magnetic field as the machine rotates. By applying torque to rotate a rotor within a magnetic field, the generator produces a continuous flow of electricity, effectively scaling Faraday’s experimental observation into a practical source of power.34