A point charge causes an electric flux of `-1.0xx10^(3) Nm^(2)//C` to pass through a spherical Gaussian surface of 10.0 cm radius centred on the charge. If the radius of the Gaussian surface were doubled, how much flux would pass through the surface?

Explanation

From Gauss's law, `phi =q/epsi_(0)`
Electric flux `phi` depends on charge q.
It is independent of radius of Gaussian surface. Hence the radius of Gaussian surface were doubled, flux does not chage.