Here's how it works:
* Moving Charges in a Magnetic Field: When a conductor (like a wire coil) moves through a magnetic field, the magnetic field exerts a force on the free electrons within the conductor. This force causes the electrons to move, creating an electric current.
* Faraday's Law: The magnitude of the induced electromotive force (EMF), which drives the current, is directly proportional to the rate of change of magnetic flux through the conductor.
* Generator Design: Generators are designed to exploit this principle. They typically consist of a rotating coil of wire (armature) within a stationary magnetic field. As the coil rotates, the magnetic flux through it changes, inducing an alternating current (AC) in the coil.
In simpler terms: A generator basically converts mechanical energy (from the rotating coil) into electrical energy by using the relationship between moving charges and magnetic fields.