Question

A charge q is distributed uniformly over the volume of a ball of radius R. Assuming the permittivity to be equal to unity, find:

Answer 1

Answer:

For air or free space, it is unity. Absolute permittivity does not depend on the medium, its value is always constant=8.85*10-12F/m. Actual permittivity is the product of relative permittivity and absolute permittivity

Answer 2

Answer:

Now you must consider a thin spherical shell. It's thickness dr and radius ’r’ are concentric with a sphere that's charged. The obtained charge density present in the sphere is now given and after charge contained in a sphere, the shell is also given along with Electric potential the final answer will be the potential difference.

Vr = V+ delta V