Dipole in a uniform external field

The video tutorial explains the concept of a uniform electric field, where the field strength is consistent at every point. It discusses the behavior of a permanent dipole in such a field, highlighting that the net force on the dipole is zero, but a torque is present due to the separation of charges. The torque's magnitude is determined by the forces and their perpendicular distance. In non-uniform fields, the net force is non-zero, and the dipole experiences a force depending on its orientation relative to the field. The video also covers vector notation for torque and the conditions under which the net torque is zero.

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