As the name of the thread says, I am wondering what would the amount and the direction of the electric field at some point in the uniformly charged ball of radius R(it has a constant charge volume density) be at the distance r from the centre of the ball. Does anyone know what would they be? I would also be interested in what is behind that fact(why is it so). Thanks in advance. PS. I didn't know where to put this thread so I've put it in the general section, hopefuly I haven't caused a mess by doing it.