1. The problem statement, all variables and given/known data a thin metallic spherical shell contains charge Q on it.A point charge q is placed at its centre and another charge q(1) is placed outside the shell collinear with the charge placed at the centre of the shell.all charges are positive. what is the force direction on the charge placed at the centre? 2. Relevant equations coulomb law, gauss law 3. The attempt at a solution the centre charge will induce some charge on the inner surface of shell. the outside charge is shielded by the metallic sphere.since the centre charge experiences equal forces from all directions ,so it will not have any net force.my problem is that i do not know whether my argument is correct.