Arun
Last Activity: 5 Years ago
The total charge enclosed for the inner sphere is 'q'.
Hence, the surface charge density for the inner sphere is
sigma inner = q /4piR1^2
The total charge enclosed for the outer sphere is 'Q+q'.
Hence, the surface charge density for the outer sphere is
sigma inner = q /4piR1^2
The electric field at a point at a distance x from the sphere is given by Gauss' law
by imagining a sphere of radius x.