Faraday's law states that change in magnetic flux produce an induced emf on the conductor, this emf is proportional to rate of change in magnetic flux. In physics it is enough to study electromagnetic induction, but how the flux change produce an induced emf . This was solved by Lorentz force , F = q[ E + v X B] where v is the velocity of charge 'q' in magnetic field 'B', why the two forces are just added without any vector consideration, this is tells that the magnetic field or electric field doesn't mutually affects. That is magnetic field only link with other magnetic field.
Consider a magnetic field and a conductor which cut the flux perpendicularly( yes, of course we can't cut by parallel plane) the relative motion of conductor and hence the free electrons in conductor influenced by the magnetic force q(v X B) this force generate a potential difference called induced emf. Note that the kinetic energy of the conductor 1/2 mv^2 is converted to the electric potential energy. This is why the work done by magnetic field is zero.Wait, then how magnetic substance attracts nails against gravitational energy, this will explained by my next post.
