JEE Mains Model Paper 15

Max. Energy stored in a capacitor E1 =

Q2

2C

When energy is stored equally between the electric and magnetic fields, then energy in the capacitor is E2 =

1

2

E1
If Q’ is the charge on the capacitor in this case, then E2 =

Q2

2C

∴

Q2

2C

=

1

2

Q2

2C

Q' =

Q

√2