AIIMS 2019 Physics Eddy Currents Assertion Reason Question
Assertion: A metallic surface is moved in and out in magnetic field then emf is induced in it.
Reason: Eddy current will be produced in a metallic surface moving in and out of magnetic field.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The assertion is true because moving a metallic surface in and out of a magnetic field induces an electromotive force (emf) due to Faraday's law of electromagnetic induction. The reason is also true, as eddy currents are indeed generated in the metallic surface due to this motion; however, eddy currents are a consequence of the induced emf rather than the primary explanation for it. Option A is incorrect because, while both statements are true, the reason does not directly explain the assertion. Options C and D are incorrect as both the assertion and reason are valid statements in the context of electromagnetic induction.
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