1. The problem statement, all variables and given/known data A hollow sphere of radius R, centre at the origin, is cut into eight equal parts by 3 mutually perpendicular planes through the origin. Only one part is retained (the other 7 are removed) and given a charge q uniformly distributed on its surface. find magnitude of electrostatic intensity at the origin. Can u solve and explain how u got the ans plz? 2. Relevant equations 3. The attempt at a solution My teacher was looking at the resemblance of intensity of this part of the shell with that of a hemispherical shell, but I have no idea how that's possible.