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A parallel plate capacitor has a uniform electric field $E$ in the space between the plates. If the distance between the plates is $d$ and area of each plate is $A,$ the energy stored in the capacitor is 
  • A${\varepsilon _0}EAd$
  • B$\;\frac{1}{2}{\varepsilon _0}\frac{{{E^2}}}{{Ad}}$
  • C$\;\frac{1}{2}\;{\varepsilon _0}{E^2}Ad$
  • D$\;{\varepsilon _0}\frac{{{E^2}}}{{Ad}}$
AIPMT 2008,AIPMT 2011,AIPMT 2012, Medium
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