We obtain analytical expressions for the torques and angular speed of an induction motor with a
simple geometry, resembling the geometry of the first induction motor investigated by Arago in 1824.
The rotor is a conducting disc rotating between the magnetic poles of two off-axis solenoids,
displaced in space by ##IMG## [http://ej.iop.org/images/0143-0807/36/5/055008/ejp515468ieqn1.gif]
{$90^circ $} from each other. We apply our results to discuss a theory for the ubiquitous
electromechanical watt-hour meter. For comparison of the theoretical result for the angular speed
with measurements, we propose a simple experiment in which an induction motor with an aluminum disc
rotor is constructed.