Faraday's Law of Electromagnetic Induction dictates that any change in magnetic flux passing through a closed conducting circuit induces an electromotive force (EMF) around the perimeter of the loop. According to Lenz's law (represented by the negative sign), the induced current creates an auxiliary magnetic field that directly opposes the change in original magnetic flux that produced it. This fundamental interaction forms the operational foundation of electric generators, transformers, and induction motors.