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
${1 \over 2}{\varepsilon _0}{E^2}$
${{{E^2}Ad} \over {{\varepsilon _0}}}$
${1 \over 2}{\varepsilon _0}{E^2}Ad$
${\varepsilon _0}EAd$
Solution
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