A parallel plate capacitor is made of two circular plates separated by distance of 5 mm and with a dielectric with dielectric constant of 2.2 between them. When the electric field in the dielectric is 3 × 104 V/cm, the charge density of the positive plate will be nearly
1
58.5 × 106 C/m2
2
29.5 × 106 C/m2
3
29.5 × 10-6 C/m2
4
58.5 × 10-6 C/m2