# Modelling the electric field applied to a tokamak

@article{Johnson2009ModellingTE, title={Modelling the electric field applied to a tokamak}, author={Robert W. Johnson}, journal={The European Physical Journal D}, year={2009}, volume={59}, pages={407-412} }

Abstract.
The vector potential for the Ohmic heating coil system of a tokamak is obtained in semi-analytical form. Comparison is made to the potential of a simple, finite solenoid. In the quasi-static limit, the time rate of change of the potential determines the induced electromotive force through the Maxwell-Lodge effect. Discussion of the gauge constraint is included.

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