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A parallel plate capacitor is made of two circular
\( \mathrm{P} \)
plates separated by a distance of \( 5 \mathrm{~mm} \) and with a
W
dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is \( 3 \times 10^{4} \) \( \mathrm{V} / \mathrm{m} \), the charge density of the positive plate will be close to :
(A) \( 6 \times 10^{-7} \mathrm{C} / \mathrm{m}^{2} \)
(B) \( 3 \times 10^{-7} \mathrm{C} / \mathrm{m}^{2} \)
(C) \( 3 \times 10^{4} \mathrm{C} / \mathrm{m}^{2} \)
(D) \( 6 \times 10^{4} \mathrm{C} / \mathrm{m}^{2} \)
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