Physics · Alternating Current

JEE Main 2025 — 23 January, Evening Shift — Question 71

In a series LCR circuit, a resistor of $300 \Omega$ , a capacitor of 25 nF and an inductor of 100 mH are used. For maximum current in the circuit, the angular frequency of the ac source is $\qquad$ $\times 10^{4}$ radians $\mathrm{s}^{-1}$ .

Answer: 2

Numerical answer — enter this value.

Step-by-step solution

$\omega=\frac{1}{\sqrt{\mathrm{LC}}}$

$\omega=\frac{1}{\sqrt{25 \times 10^{-9} \times 100 \times 10^{-3}}}$

$\omega=\frac{10^{+6}}{5 \times 10}=2$

Answer key and solution verified before publishing.

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Exam: JEE Main 2025
Paper: 23 January, Evening Shift
Subject: Physics
Chapter: Alternating Current
Topic: L-C Circuits oscillations and Quality Factor, Resonance