Lenz’s Law and Eddy Currents

According to Faradays law, a changing magnetic field will induce an emf. If the emf flows in a current, another magnetic field will be created (similar to how an electromagnet works). The new field and original field oppose each other – and this is known as Lenz’s law. It is required by the conservation of energy.

The slides explain Lenz’s law, and also discuss the related concept of eddy currents.

Keynote slides

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