A parallel plate capacitor is made of two circular plates separated by a distance of

Question:

A parallel plate capacitor is made of two circular plates separated by a distance of $5 \mathrm{~mm}$ and with a dielectriic of dielectric constant $2.2$ between them. When the electric field in the dielectric field in the dielectric is $3 \times 10^{4} \mathrm{~V} / \mathrm{m}$, the charge density of the positive plate will be close to :

  1. $3 \times 10^{4} \mathrm{C} / \mathrm{m}^{2}$

  2.  $6 \times 10^{4} \mathrm{C} / \mathrm{m}^{2}$

  3. $6 \times 10^{-7} \mathrm{C} / \mathrm{m}^{2}$

  4. $3 \times 10^{-7} \mathrm{C} / \mathrm{m}^{2}$

Correct Option: , 3

Solution:

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