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Flashcards in Electromagnetism Deck (3)
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State Faraday’s law of electromagnetic induction

The induced e.m.f is directly proportional to the rate of change of magnetic flux linkage


A magnet is moving into the centre of a flat circular coil of wire. A current is induced in the coil. Use ideas about energy conservation to state and explain the polarity of the face of the coil nearer the magnet

North Pole, there is a repulsive force between the magnet and coil and the work done against this repulsive force is transferred to electrical energy in the coil.


State Lena’s law

The direction of any induced e.m.f or current is in a direction that opposes the flux change that causes it.