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Eddy Currents

When changing magnetic fields occur in conductors, currents are induced, and their effects can be seen in these demonstrations.

Sample Examination question - 2006 HSC Examination

A student drops a bar magnet onto a large block of copper resting on the floor. The magnet falls towards the copper, slowing down as it comes close then landing gently. a) Explain the Physics responsible for this observation b) Predict what will happen if the experiment is repeated with a copper block cooled to approximately -50 degress celcius. Justify your prediction.

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Eddy Currents

Motors & Generators

9.3.2.2.7

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