When is the torque on a dipole in a field maximum ?

When torque on a dipole in an electric field will be maximum?

When is the torque acting on an electric dipole maximum when placed in uniform electric field ?

Derive an expression for force and torque acting on an electric field. In which situation, torque on the dipole is (i) maximum and (ii) minimum

When the torque acting on electric dipole ii uniform electric field becomes maximum ?

When the torque acting on electric dipole in uniform electric field becomes zero ?