EMF generation occurs when a closed loop of wire moves through a magnetic field, with the work being performed by the individual pushing or rotating the coil. It is confirmed that EMF can also be generated through a changing magnetic field without the need for coil rotation, as the changing magnetic flux induces an EMF. Most large generators and alternators utilize this principle, where a magnet is rotated inside fixed coils to produce electricity. The discussion clarifies that both constant and non-constant magnetic fields can effectively generate EMF. Understanding these principles is crucial for applications in electrical engineering and generator design.
