Physics - Electrostatics Question with Solution | TestHub

A ring of radius R having a linear charge density $\lambda$ moves towards a solid imaginary sphere of radius $\frac{R}{2}$, so that the centre of ring passes through the centre of sphere. The axis of the ring is perpendicular to the line joining the centres of the ring and the sphere. If the maximum flux through the sphere in this process is $\frac{2\lambda \pi R}{n{\epsilon }_0}$, then find the value of n.