CBSE 2024 · Region 4 · Set 1 · Q8 · 1 mark
A circular loop $\displaystyle A$ of radius $\displaystyle \mathrm{R}$ carries a current $\displaystyle I$. Another circular loop $\displaystyle B$ of radius $\displaystyle r\left(=\frac{\mathrm{R}}{20}\right)$ is placed concentrically in the plane of $\displaystyle A$. The magnetic flux linked with loop B is proportional to
Official answer
From CBSE’s own marking scheme for this paper.
(A)
R
Moving Charges and MagnetismMagnetic Field on the Axis of a Circular Current LoopApplymcqmedium
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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.