The plates of a paralllel plate capacitor have an area of 90cm2 each and are separated by 2.5mm. The capacitane is charged by connecting it to a 400V supply. (a) How much electrostatic energy is stored by the capacitor ? (b) View this energy as stored in the electrostatic field between the plates, and obtain the energy per unit volume (u). Hence arrive at a realtion between U and the magnitude of electric field E between the plates.

The plates of a paralllel plate capacitor have an area of 90cm2 each a

1.	The plates of a paralllel plate capacitor have an area of 90cm2 each and are separated by 2.5mm. The capacitane is charged by connecting it to a 400V supply. (a) How much electrostatic energy is stored by the capacitor ? (b) View this energy as stored in the electrostatic field between the plates, and obtain the energy per unit volume (u). Hence arrive at a realtion between U and the magnitude of electric field E between the plates.
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