Acapacitor is not the most efficient device for storing energy. batteries can store more energy in much less space. for example, a typical 12 v automobile battery stores on the order of 1.00 x 10^6 j. (a) find the capacitance necessary to store 1.00 x 10^6 j with a potential difference of 1.00 x 10^4 v across the capacitor's terminals.
(b) suppose that such a capacitor was made in the form of a parallel-plate capacitor with a vacuum between the plates and an electric field no greater than 9.00 x 10^6 v/m. what is the minimum area of the plates?