Faraday's Electromagnetic Lab

Discover electromagnetic induction with a magnet and coil

Faraday's Law states that a changing magnetic flux through a coil induces an electromotive force (EMF) proportional to the rate of change and the number of turns. Lenz's Law determines the direction: the induced current creates a magnetic field opposing the change that caused it. This principle underlies all electric generators, transformers, and induction cooktops.