Two identical bar magnets are fixed with their centres at a distance d apart. A stationary charge Q is placed at P in between the gap of the two magnets at a distance D from the centre O as shown in the Figure
The force on the charge Q is
directed perpendicular to the plane of paper
zero
directed along OP
directed along PO
Force on a charged particle is given by F = qvB. Here v = 0 and also resultant B is zero. ∴ Force = 0