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Jumping Rings With Liquid Nitrogen

Conducting rings cooled to -196˚ Celcius are placed around an electromagnet. Resistance in the conducting rings decreases.

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.

Related Resources

Related Resources

External Links

Cold Jumping Rings

Motors & Generators

9.3.2.2.7

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