In atomic physics , the electron magnetic moment , or more specifically the electron magnetic dipole moment , is the magnetic moment of an electron resulting from its intrinsic properties of spin and electric charge . The value of the electron magnetic moment (symbol μ e ) is −9.284 764 6917 (29) × 10 −24 J⋅T −1 . [ 1 ] In units of the Bohr magneton ( μ B ), it is −1.001 159 652 180 59 (13) μ B , [ 2 ] a value that was measured with a relative accuracy of 1.3 × 10 −13 . Magnetic moment of an electron [ edit ] The electron is a charged particle with charge − e , where e is the unit of elementary charge . Its angular momentum comes from two types of rotation: spin and orbital motion . From classical electrodynamics , a rotating distribution of electric charge produces a magnetic di...