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  4. Assertion:The direction of induced emf is always such as to oppose the change that causes it Reason: Conservation of energy applies to know the direction of induced emf

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Q. Assertion:The direction of induced emf is always such as to oppose the change that causes it
Reason: Conservation of energy applies to know the direction of induced emf

Electromagnetic Induction

Solution:

A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
The direction of induced emf is always such as to oppose the change that cause it is called Lenz's Law. Lenz's Law consequence of the Law of conservation of energy.