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  4. A 60μF capacitor is charged to 100 volts. This charged capacitor is connected across a 15mH coil, So that LC oscillations occur. Maximum current in the coil is :

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Q. A $60μF$ capacitor is charged to $100$ volts. This charged capacitor is connected across a $15mH$ coil, So that $LC$ oscillations occur. Maximum current in the coil is :

NTA AbhyasNTA Abhyas 2020

Solution:

$Q_{0}=CV\&i_{0}=Q_{0}\omega =\frac{CV}{\sqrt{LC}}$
$i_{0}=V\sqrt{\frac{C}{L}}=2\sqrt{10}$