A hollow, conducting sphere with an outer radius of 0.253m and an inner radius of 0.190m has a uniform surface charge density of +6.64×10?6 C/m^2 . A charge of -0.750(mu)C is now introduced into the cavity inside the sphere.
Part 1. Calculate the strength of the electric field just outside the sphere
Part 2. What is the electric flux through a spherical surface just inside the inner surface of the sphere?