Electromagnetic or Magnetic induction is the production of an electromotive force or voltage across an electrical conductordue to its dynamic interaction with a magnetic field.
Michael Faraday is generally credited with the discovery of induction in 1831, and mathematically described it as Faraday's law of induction. Lenz's law describes the direction of the induced field. Faraday's law was later generalized to the Maxwell-Faraday equation, which is one of the equations in James Clerk Maxwell's theory of electromagnetism.
Electromagnetic induction has found many applications in technology, including electrical components such as inductors and transformers, and devices such as electric motors and generators.Electromagnetic induction was first discovered by Michael Faraday, who made his discovery public in 1831.It was discovered independently by Joseph Henry in 1832.
Faraday explained electromagnetic induction using a concept he called lines of force. However, scientists at the time widely rejected his theoretical ideas, mainly because they were not formulated mathematically.An exception was James Clerk Maxwell, who used Faraday's ideas as the basis of his quantitative electromagnetic theory.In Maxwell's model, the time varying aspect of electromagnetic induction is expressed as a differential equation, which Oliver Heaviside referred to as Faraday's law even though it is slightly different from Faraday's original formulation and does not describe motional EMF. Heaviside's version (see Maxwell–Faraday equation below) is the form recognized today in the group of equations known as Maxwell's equations.
In 1834 Heinrich Lenz formulated the law named after him to describe the "flux through the circuit". Lenz's law gives the direction of the induced EMF and current resulting from electromagnetic induction.