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The plates of a parallel plate capacitor have an area of $90\;cm$ each and are separated by $2.5\;mm$. The capacitor is charged by connecting it to a $400\; V$ supply.How much electrostatic energy is stored by the capacitor?

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$(B)\;2.55 \times 10^{-6}J$
Hence B is the correct answer.
answered Jun 21, 2014 by meena.p
 

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