Electromagnetic, Electromagnetic Waves, Physics.
surface with sides a and l but perpendicular to the z direction as in the figure. From Lenz’s law, the polarity of the electromotive force is such that the resulting electric current opposes the magnetic field that created it, therefore: or with the notation ∆Ey = Ey(a/2, t) − Ey(−a/2, t) we get: