Question

The electric field intensity outside the charged conducting sphere of radius ‘R’, placed in a medium of permittivity ∈ at a distance ‘r’ from the centre of the sphere in terms of surface charge density σ is

Options

• `σ/∈ (R/r)^2`

• `σ/∈ (r/R)^2`

• `σ/∈ (R^2/r^2)^2`

• `σ/∈ (r^2/R^2)^2`

Answer 1

`σ/∈ (R/r)^2`

By using Gauss theorem we know that