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PhysicsEMI/ACSeries AC CircuitsEasy2 minPYQ_2004

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In a LCR circuit capacitance is changed from $C$ to $2 C$ . For the resonant frequency to remain unchanged, the inductance should be changed from $L$ to

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Solution:

$ω_{res} = \frac{1}{L C}$ if $ω_{res}$ is to remain same, the product LC should also not change. $\Rightarrow LC = L^{'} C^{'} \Rightarrow LC = L^{'} 2 C \Rightarrow L^{'} = L^{2} 2$

Stream:JEESubject:PhysicsTopic:EMI/ACSubtopic:Series AC Circuits

⏱ 2mℹ️ Source: PYQ_2004

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