The angular momentum L of the electromagnetic field due to an electric point charge e, and a magnetic point charge (pole) g, is calculated by several methods to obtain J. J. Thomson's result that L = eg/c, and L is directed along the line joining the electric monopole to the magnetic monopole. The relation to Dirac's monopoles is discussed, and particle size is considered. © 1991, American Association of Physics Teachers. All rights reserved.
I. Adawi, "Thomson's Monopoles," American Journal of Physics, vol. 44, no. 8, pp. 762 - 765, American Association of Physics Teachers, Jan 1976.
The definitive version is available at https://doi.org/10.1119/1.10310
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01 Jan 1976