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Physics · 2024 · 1 mark
CBSE 2024 · Region 2 · Set 2 · Q6
A series LCR circuit ( L =2 mH, C =0 · 2 μ F and R =30 Ω ) is connected to an ac source of variable frequency. The impedance of this circuit will be…
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
(B)
$\displaystyle \frac{10^{5}}{2 \pi} \mathrm{~Hz}$
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CBSE Class 12 Physics past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.