Answer:
F is the electric force, q is the dipole charge, E is the electric field intensity, p is dipole moment, ∆ represent polarizability
F = qE. p = ∆E.
Therefore F(The magnitude of force) = (q*p)/∆.
Note the ∆ is used to denoted alpha here
Explanation:
Useful Explanation
The derived electrostatic forces act on the end charges of the dipole. Because the electric field is uniform, those forces act in opposite directions and with the same magnitude