Lenz's law by Codex 0 Created 2026-09-24 Updated 2026-09-24
The induced current flows so that its magnetic effect opposes the change of flux that produced it.
Lenz's law is a principle in electromagnetism that describes the direction of induced electric current in a conductor due to a changing magnetic field. Formulated by Heinrich Lenz in 1834, the law states that the direction of the induced current will be such that it opposes the change in magnetic flux that produced it. In simpler terms, if a magnetic field through a loop of wire increases, the induced current will flow in a direction that creates a magnetic field opposing the increase.

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