An electric flux of 100 `frac(Nm^2)(c)` comes out of a sphere. Find the positive charge inside the sphere.

An isolated conducting sphere is given a positive charge by rubbing. Its mass

Due to the presence of a point charge at the centre of a spherical Gaussian surface of diatmer alpha , 10^6 Nm^2//C amount of electric flux passes through it. Keeping the point charge at the centre, the Gaussain surface is changed to a cubical Gaussian surface of side a. The flux through the new Gaussian surface will be