A capacitor of capacitance C C\,C is charged until the energy stored is EEE. The potential difference across the capacitor is then increased by 50% while its capacitance remains constant.
What is the increase in the energy stored by the capacitor?
0.50E0.50 E0.50E
1.50E1.50 E1.50E
1.25E1.25 E1.25E
2.25E2.25 E2.25E