When an additional charge of 2C is given to a capacitor energy stored in it increasad by 21% .The original charge of the capacitor is A.30CB.40CC.10CD.20C
When an additional charge of 2C is given to a capacitor energy stored in it increasad by 21% .The original charge of the capacitor is
A.30C
B.40C
C.10C
D.20C