An electric dipole of dipole moment `oversetrarrp` is placed in a uniform electric field `oversetrarrE`. Where the expression for the torque `oversetrarrtau` experienced by the dipole. Identify two pairs of perpendicular vectors in the expression. Show diagrammatically the orientation of the dipole in the field for which the torque is (i) Maximum (ii) Half the maximum value (iii) Zero.