A parallel plate capacitor is made of two circular plates separated by a distance of 5 mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is 3 × 1 0 4  V/m , the charge density of the positive plate will be close to :

Question

A parallel plate capacitor is made of two circular plates separated by a distance of 5 mm and with a dielectric of dielectric constant 2.2 between them. When the electric field in the dielectric is 3 &#215; 1 0 4 &#160;V/m , the charge density of the positive plate will be close to :

Aicharya · Accepted Answer

E = 3 &#215; 1 0 4 &#160;V/m We know that Q = CV = k &#949; 0 A d &#183; E &#183; d = k &#949; 0 AE Q A = k &#949; 0 E = 2.2 &#215; 8.85 &#215; 10 - 12 &#215; 3 &#215; 10 4 = 58.41 &#215; 10 - 8 = 5.84 &#215; 10 - 7 &#8776; 6 &#215; 10 - 7 C / m 2

A parallel plate capacitor is made of two circular plates separated by a distance of 5 mm and with a…

Solution