Question

Write an expression for work done in turning a dipole through angle

Answer 1

=Work done by external=change in electric potential energy. When electric dipole is perpendicular to electric field it's electric potential energy is zero. When electric dipole makes 180 degrees with electric field it's potential energy is p* E i.e electric dipole moment * Electric field intensity.✔✔

Answer 2

Answer:

For an electric dipole p in a uniform field E we write the work done by an external agent in rotating dipole as dW=pEsinθd