AIIMS 2019 Physics Faraday's Law Assertion Reason Question
Assertion: An induced emf appears in any coil in which the current is constant.
Reason: Self induction phenomenon does not obey Faraday’s law of induction.
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 an induced emf does indeed appear in a coil when a bar magnet moves in and out, demonstrating electromagnetic induction. The reason is also true, as Faraday's Law states that the induced emf (ε) is proportional to the rate of change of magnetic flux (Φ) through the coil, which occurs when the magnet moves. Options B and C are incorrect because they misrepresent the relationship between the assertion and the reason, while option D incorrectly states that the assertion is false. Understanding this concept is crucial for grasping the principles of electromagnetism and the behavior of magnetic fields in conductive materials.
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