Question

Suppose I have a spherical insulating shell with inner radius r and outer radius R. The shell has a uniformly distributed charge of +Q. What is the charge density on my shell? 3Q / 4pi (R^3) 3Q / 4 pi (R^3 - r^3) 3Q / 4 pi (r^3 - R^3) 3Q / 4 pi (r^3) [5 points] Suppose I have a conducting sphere of radius R. I place a net charge of +Q on the sphere. What is the charge density inside the sphere? Zero

Answer 1

Answer:

3Q / 4 pi (R^3 - r^3)

Explanation:

Charge density = charge / volume

volume of a spherical shell = $\frac{4}{3} \pi(R^{3} - r^{3})$