Lenz's law states that the direction of an induced electromotive force (emf) in a conductor or circuit, due to a changing magnetic field, is always such that it opposes the cause that produced it. In simple terms, it means that an induced current will always flow in a direction that opposes the change in magnetic field that produced it. This law is fundamental to the understanding of electromagnetic phenomena and plays an important role in the functioning of many devices, including transformers and generators.
