Question

Torque acting on the dipole is maximum
When the angle between the axes of
dipole with electric field is​

Answer 1

The force acting on the charges acts as a couple and the dipole experiences a torque. The torque is maximum when it makes 90o with the electric field, which is the most unstable position. θ is the angle between the dipole and electric field.

Answer 2

Explanation:

So Torque is maximum on Dipole if angle between P amd E is 90 degree