field of a charged particle in a scalar-tensor theory of gravitation

field equations in the scalar-tensor theory of gravitation, proposed by saez and ballester (phys. lett. a 113: 467, 1986), are obtained for a static charged point mass with the aid of a spherically symmetric metric. a closed form exact solution of the field equations is presented and may be considered as describing the field due to a charged mass point at the origin surrounded by a scalar-tensor field.