Faraday's Law of Induction is a fundamental law of electromagnetism forecasting how a magnetic field will interface with an electric circuit to produce an electromotive force, which is a phenomenon called electromagnetic induction.
It is the fundamental principle of transformers, inductors, and many types of electrical motors, generators, and solenoids. It is a quantitive relationship between changing magnetic fields and the electric fields created by change, developed on the premise of experimental observations made in 1831 by the English scientist Michael Faraday.
Faraday's discovery of magnetic induction is one of the significant milestones in the quest toward understanding and exploiting nature. The law of induction is its quantitative expression. Faraday visualized a magnetic field as composed of many lines of induction, along which a small magnetic compass would point.
