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Eddy currents are produced when a metal is kept in a varying magnetic field. What is the effect of these currents?

1. They oppose the change in magnetic flux
2. They enhance the change in magnetic flux
3. They have no effect on magnetic flux
4. None of the above

Correct answer: They oppose the change in magnetic flux

Solution

Eddy currents are induced in a conductor due to a change in magnetic flux, and according to Lenz's law, they oppose the change in magnetic flux that caused them.

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