A parallel plate capacitor has a charge of 5.5 107 C on one plate and

Question:

A parallel plate capacitor has a charge of 5.5 × 10−7 C on one plate and − 5.5 × 10−7 C on the other. The distance between the plates is increased by 50% while the charge on each plate stays the same. What happens to the energy stored in the capacitor?