Assertion : An emf E is induced in a closed loop where magnetic f… - Vidyadip

MCQ

Assertion : An $emf$ $\vec E$ is induced in a closed loop where magnetic flux is varied. The induced $\vec E$ is not a conservative field.

Reason : The line integral $\vec E.d\vec l$ around the closed loop is nonzero.

✓
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

✓

Answer

Correct option: A.

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

a
Assertion and Reason is correct and Reason explains Assertion. According to Faraday’s law of electromagnetic induction

$\int {\vec E.d\vec l} \, = \, - \frac{{d\phi }}{{dt}}$

So, $(E)$ is non-conservative field as in conservative field line integral over a closed loop is zero.

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