A parallel plate capacitor is made of two circular plates by a distance of 5mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is `3x10^4 V//m`, the charge density of the positive plate will be close to :

Options

A. `3xx10^4C//m^2`
B. `6xx10^4C//m^2`
C. `6xx10^(-7)C//m^2`
D. `3xx10^(-7)C//m^2`

Answer

C