The concept of electromagnetic induction in physics explains the process of generating an electric current in an open circuit as a result of a change in the magnetic field. According to Faraday's law, when the magnetic flux through a surface changes over time, an electromotive force (EMF) is produced. The Lenz's law determines the direction of inductive current, opposing the change in the magnetic field. Electromagnetic induction is used in generators, transformers, and many electrical devices