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JEE Main20265 April 2026Evening ShiftPhysicsAlternating CurrentActual

A series LCR circuit with R = 20 , L = 1.6 H and C = 40 F is connected to a variable frequency a.c. source. The inductive reactance at resonant frequency is _______ .

Correct answer

0

Step-by-step solution

Given L = 1.6 H and C = 40 F = 40 10⁻⁶ F . At resonance, the angular frequency is _r = 1 LC . The inductive reactance at resonance is X_L = _r L = L LC = L C . Substituting the given values: X_L = 1.6 40 10⁻⁶ X_L = 1.6 4 10⁻⁵ X_L = 4 10^4 X_L = 200 Answer: 200

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