A Pure Dipole P Is Situated At The Origin Pointing

A “pure” dipole p is situated at the origin, pointing in the z direction.

(a) What is the force on a point charge q at (a, 0, 0) (Cartesian coordinates)?

(b) What is the force on q at (0, 0, a)?

(c) How much work does it take to move q from (a, 0, 0) to (0, 0, a)?

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