1. The problem statement, all variables and given/known data A spherical conductor A contains two spherical cavities. The total charge on the is itself zero. However, there is a point charge qb at the center of one cavity and qc at the center of other cavity. A considerable distance r away from the center of the spherical conductor, there is a another change qd. Force acting on qb , qc, qd, are F1 ,F2,F3 respectively [assume all changes are positive.]then fill the dashed lines with <,>,= F1______F2______F3 2. Relevant equations I use inly one equation in such questions that is Code (Text): closed integral over closed surface(E.ds)=q/e. It is gauss law. 3. The attempt at a solution I have tried to do this with gauss law but failed. can you please help.