Estimates of capacities of plane condensers (Q805801)

In the papers of \textit{H. Kloke} [Result. Math. 9, 82-94 (1986; Zbl 0599.31002)] and \textit{O. Hübner} [Math. Z. 92, 95-109 (1966; Zbl 0137.054)] an estimate concerning the capacity of condensers in the plane has been proved under the assumption of the connectivity and boundedness of the complement of the condenser. It is proved that an analogous estimate is valid without those assumptions.