CBSE 2025 · Region 1 · Set 1 · Q5 · 1 mark
You are required to design an air-filled solenoid of inductance $\displaystyle 0.016$ H having a length $\displaystyle 0.81$ m and radius $\displaystyle 0.02$ m. The number of turns in the solenoid should be
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle 2866$
Electromagnetic InductionInductanceApplymcqmedium
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CBSE Class 12 Physics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.