Question

All free electrons have a constant magnetic dipole moment with a magnitude of 9.28 × 10-24 J/T.

A) What is the magnetic force between two electrons separated by 0.14 nm (the width of a small atom), if the dipole moments are directed along a common line (like two bar magnets end-to-end)? In Newtons

B) Now evaluate the force of electrical repulsion between two electrons at the same distance, assuming the electrons are both point charges, using Coulomb's Law. What is ratio of the electrical force to the magnetic force between the electrons?

Answer 1