Faraday’s law of electromagnetic induction
Whenever the flux of magnetic field through the area bounded by a closed conducting loop changes, an emf is produced in the loop. The emf is given by
E = -dΦdt
Where
Φ = ∫B.dS is the flux of the magnetic field through the area.
Lenz’s law
The direction of the induced current is such that it opposes the change that has induced it.
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