The relationship between EMF and magnetic flux is an equation now known as Faraday 's law of induction :
Electromagnetic induction , the principle of the operation of the transformer , was discovered independently by Michael Faraday in 1831 , Joseph Henry in 1832 , and others .
The relationship between EMF and magnetic flux is an equation now known as Michael Faraday 's law of induction :
Electromagnetic induction , the principle of the operation of the transformer , was discovered independently by Michael Faraday in 1831 , Joseph Henry in 1832 , and others .