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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 17 - Electric Charge and Field > A sphere of radius R carries charge such that its volume charge density is proportional to the square of the distance from the centre. What is the ratio of the magnitude of the electric field at a distance 2 R from the centre to the magnitude of the electric field at a distance of R/2 from the centre?

A sphere of radius R carries charge such that its volume charge density is proportional to the square of the distance from the centre. What is the ratio of the magnitude of the electric field at a distance 2 R from the centre to the magnitude of the electric field at a distance of R/2 from the centre?

If the flux of the electric field through a closed surface is zero then