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•• The energy of a magnetic moment μ in a magnetic field B pointing along the z axis is −μzB. For an electron in orbit around a proton, μz is given by (9.35) as −(e/2me)Lz. If B = 10 T (a large field by the standards of most laboratories) and if the electron is in a p state with Lz = ℏ, what is the magnetic energy due to the orbital magnetic moment (in joules and in eV)?
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