A series LCR circuit has L = 0.01 H, R = 10 and C = 1 F and it is connected to ac voltage of amplitude (V_m) 50 V. At frequency 60% lower than resonant frequency, the amplitude of current will be approximately

JEE Main 2022 Physics question

A series LCR circuit has L = 0.01 H, R = 10 and C = 1 and it is connected to ac voltage of amplitude 50 V. At frequency 60% lower than resonant frequency, the amplitude of current will be approximately

(1)466 mA
(2)312 mA
(3)238 mACorrect
(4)196 mA

Answer: (3)

Solution

The resonant frequency is rad/s, so rad/s. Then = and

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Question ID VK-034279