AIIMS 2018 Physics Faraday's Law Assertion Reason Question
Assertion: An emf can be induced by moving a conductor in a magnetic field. Reason: An emf can be induced by changing the 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
Option B is correct because both the assertion and reason are true: an electromotive force (emf) can indeed be induced by moving a conductor through a magnetic field (Faraday's law of electromagnetic induction), and it can also be induced by changing the magnetic field around a conductor. However, the reason does not directly explain the assertion, as the assertion specifically refers to the motion of a conductor, while the reason pertains to the change in the magnetic field itself.
Option A is incorrect because, although both statements are true, the reason does not provide the correct explanation for the assertion. Option C is incorrect because both the assertion and reason are true. Option D is incorrect as both statements are true, thus making this option invalid.
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