JEE Main 2014 Physics question

PhysicsElectrostatic Potential and CapacitanceJEE Main 2014

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 V/m, the charge density of the positive plate will be close to :

Answer: (1)

Solution

Inside a dielectric , where σ is the free charge density on the plate. Hence $σ = Kε_0E =

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Question ID VK-104271