The energy of a charged capacitor is stored

Deduce an expression for the energy stored in a charged capacitor. Where the energy is stored ?

The energy of a 2muF capacitor, charged to a potential difference of 100 V, is more than the energy gained by a 2muC charge moved through a potential difference of 200 V. (write yes or no).

The energy of a 2muF capacitor, charged to a potential difference of 100 V, is more than the energy gained by a 2muC charge moved through a potential difference of 200 V. (Write Yes or No)