To store more energy in a parallel plate capacitor whose plates differ by a fixed voltage what change would yo

Question

in order to store more energy in a parallel plate capacitor whose plates differ by a fixed voltage, what change would you make in the plates?

Answer 1

Energy stored = (1/2)C(V^2)

http://en.wikipedia.org/wiki/Capacitance

so to increase the energy while keeping the voltage constant, you have to increase the capacitance.

C = (k)(c)A/d

where A is the plate area, d is the distance between the plates, and c is the dielectric constant of the material between the plates.

So increase c and/or A, and/or decrease d.