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A parallel plate air capacitor has capacity $C,$ distance of separation between plates is $d$ and potential difference $V$ is applied between the plates. Force of attraction between the plates of the parallel plate air capacitor is
  • A$\frac{{{C^2}{V^2}}}{{2{d^2}}}$
  • B$\;\frac{{{C^2}{V^2}}}{{2d}}$
  • C$\frac{{C{V^2}}}{{2d}}$
  • D$\;\frac{{C{V^2}}}{d}$
AIPMT 2015, Medium
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