Question

An infinitely large non conducting plane sheet of charge density 10^-7 cm^2. The separation between two equipotential surfaces near the sheet whose potential differ by 5v is?

Answer 1

an infinitely large non conducting plane of uniform charge density σ(sigma) has a circular aperture carved out from it.the electric field at a point which is at a distance 'a' from the centre of the aperture (perpendicular to the plane) isσ/ (2√2Εâ‚€.) find the radius of the aperture.