  We discuss the effect of an external electric field on the wetting of a solid
surface by liquid. To this end, we use a model of the two-level-atom fluid for
which the changes in interatomic interactions due to the presence of the field
can be found using quantum-mechanical perturbation theory. Constructing the
grand potential functional, we perform the standard calculations of Young's
equilibrium contact angle. The switching on of the electric field $|{\bf {E}}|
> 0$ may increase noticeably the contact angle $\theta$.
