Electric dipole in uniform electric field

Consider an electric dipole in a region of uniform electric field

1. Net force on the dipole for any position is zero.

2. Torque acting on the dipole is .

3. Torque acts except for the positions when the dipole moment vector & electric field vector are collinear.

4. Total work done by us in rotating the dipole in a uniform electric field is from angle θ₁ to θ₂ is

W = pE (cos θ₁ – cos θ₂)

5. The potential energy of an electric dipole placed in a uniform electric field is

6. A dipole placed in a non uniform electric field experiences both force and torque.

7. Force on a dipole placed in shown non uniform electric field is