A small charged ball is suspended at the center of a spherical balloon that is nestled snugly inside a cubical cardboard box. On one side, the balloon touches the wall of the box.

(a) At this point of contact, is the electric field magnitude on the balloon surface equal to the electric field magnitude on the box surface? Assume neither object is polarized.

(b) At this point of contact, is the number of field lines per unit of balloon surface area equal to the number of field lines per unit of box surface area?