Question

Eight charges 1uc ,-7uc ,-4uc 10uc,2uc,-5uc ,-3uc and 6uc are situated at eight corners of a cube of side 20cm. A spherical surface of radius 80cm enclosed this cube. The centre of the sphere coincides with the centre of the cube. Then, the total outgoing flux from the spherical surface ( in units Vm) is

Answer 1

Outgoing flux does not depend upon the size of the enclosing surface. The solution is in the attachment.