Recent content by c1223

I think I might have cracked it. I realized that I also need the equation for potential which is: V = \frac{Q}{4\Piε_{0}r} Could someone please explain why it is r^{2} for electric field but r for potential?

Homework Statement So the question states that we have a hollow metal sphere of radius 2cm that is charged up. We take the breakdown field of air to be 1MV/m. We are asked to: a) Calculate the maximum amount of charge which can be placed on the sphere. b) Calculate the maximum potential on...