AIEEE 2003 Physics Solved Paper

When the capacitor is completely charged, the total energy in the L.C circuit is with the capacitor and that energy is E=‌

1

2

‌

Q2

C

When half energy is with the capacitor in the form of electric field between the plates of the capacitor we get ‌

E

2

=‌

1

2

‌

Q2

C

where Q′ is the charge on plate of the capacitor
∴‌

1

2

×‌

1

2

‌

Q2

C

=‌

1

2

‌

Q2

C

⇒Q′=‌

Q

√2