NEET 2026 — Physics solution

NEET2026Physics

An ac circuit contains a resistance of 1 k $Ω$ , a capacitor of 0.1 $μ F$ and an inductor of 1 mH connected in series. The resonance frequency of the circuit is approximately :

A
15.9 kHz
B
20.7 kHz
C
10.1 kHz
D
13.5 kHz

Solution

At resonance, $f_{r} = \frac{1}{2 π L C}$

$= \frac{1}{2 π 1 0 ^{- 3} \times 0.1 \times 1 0 ^{- 6}}$

$= \frac{100}{6.28} \times 1 0^{3} \approx 15.9$ kHz.

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