The topic of electrical engineering is presented in two volumes. This volume covers all the elements that the reader needs to know about direct current.

Continuing our effort in the "new educational standardization" that we have already established, we provided both theoretical and practical forms of those concepts that - in electricity - while not being obvious, are perceived only through their results.

We believe that in combination with the exemplary solved exercises, the reader not only grasp the theory but is also capable of solving all electrical circuits that may be presented to them in practice.

Stefanos Touloglou, Vaggelis Stergiou