CBSE 2024 · Region 4 · Set 3 · Q9 · 1 mark
The r.m.s. value of a current given by $\displaystyle \mathrm{i}=\left(\mathrm{i}_{1} \cos \omega t+\mathrm{i}_{2} \sin \omega t\right)$ is -
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle \frac{1}{\sqrt{2}}\left(\mathrm{i}_{1}^{2}+\mathrm{i}_{2}^{2}\right)$
Alternating CurrentRepresentation of AC Current and Voltage by Rotating Vectors — PhasorsApplymcqmedium
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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.