2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/85591Two sets of spatially differential formulas of Lenz law on electromagnetic inductance are presented. They are a cut-magnetic flux induced voltage, which instantaneously results from cutting magnetic flux as a conductor moving with respect to an external magnetic field, and a wave-induced voltage due to the interaction of a conductor or charged particles with the arriving electromagnetic wave, which is originated from a changing magnetic flux source. Upon the Lenz differential forms, the induced electrical field strength, relevant properties and their application are discussed.4 pages, 1 figureGeneral PhysicsClassical Physicstext