An analytical one-dimensional model is developed to predict the hydrodynamic characteristics of a turbulent thermosyphonic bottom heated loop containing an electrically conducting fluid in a transverse magnetic field. The model correlates the induced flow velocity and current in terms of the relevant flow and geometric parameters. The study covers ranges of the Grashof number, GI, from 10(8) to 10(16), the Hartmann number, Ha, from 0 to 200 and the Prandtl number, Pr, from 0.02 to 7. A direct energy conversion from thermal to electrical is envisioned in using a thermosyphonic hydromagnetic closed loop flow. It is found that the induced electric current increases sharply with increased Hartmann number at low values, and then, as Ha is increased further, the induced current either decreases or increases at a much lower rate, depending on GI and Pr. The system heat reduction factor is also estimated based on the amount of suppression of heat transport from the hot to the cold segment when a magnetic field is present to the amount transported when no field is present.