CBSE 2024 · Region 1 · Set 2 · Q7 · 1 mark
A conducting circular loop is placed in a uniform magnetic field $\displaystyle \mathrm{B}=50 \mathrm{mT}$ with its plane perpendicular to the magnetic field. The radius of the loop is made to shrink at a constant rate of $\displaystyle 1 \mathrm{~mm} \mathrm{~s}^{-1}$. At the instant the radius of the loop is $\displaystyle 4$ cm , the induced emf in the loop is :
Official answer
From CBSE’s own marking scheme for this paper.
(A)
$\displaystyle \pi \mu \mathrm{V}$
Electromagnetic InductionFaraday’s Law of InductionApplymcqmedium
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CBSE Class 12 Physics past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.