Where does the energy of a capacitor reside ?

In which form and where is the energy of the capacitor stored?

Where does the charge of a conductor reside?

Energy in capacitor

Where is energy stored in a capacitor?

Explain from where does the energy to run a car come.

If the potential difference across a plane parallel plate capacitor is doubled then the potential energy of the capacitor is doubled then the potential energy of the capacitor becomes four times under all conditions The potential energy U stored in the capacitor is U=(1)/(2) CV^(2) , where C and V have usual meaning.