Lenz's law
From Wikipedia, the free encyclopedia.

Lenz's law gives the direction of the induced emf resulting from electromagnetic induction, thus:

The emf induced in an electric circuit always acts in such a direction that the current it drives around the circuit opposes the change in magnetic flux which produces the emf.

The law is named after the Estonian physicist Heinrich Lenz.

See Maxwell's equations for further mathematical treatment.

The original article can be found at: http://en.wikipedia.org/wiki/Lenz's_law.
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