CBSE 2024 · Region 2 · Set 2 · Q6 · 1 mark
A series LCR circuit ( $\displaystyle \mathrm{L}=2 \mathrm{mH}, \mathrm{C}=0 \cdot 2 \mu \mathrm{~F}$ and $\displaystyle \mathrm{R}=30 \Omega$ ) is connected to an ac source of variable frequency. The impedance of this circuit will be minimum at a frequency of :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle \frac{10^{5}}{2 \pi} \mathrm{~Hz}$
Alternating CurrentAC Voltage Applied to a Series LCR CircuitApplymcqmedium
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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.