The subject 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 standard" that we have already established, we have provided both theoretical and practical forms of those concepts that - in electricity - while not apparent, are understood only through their results.

We believe that in combination with the exemplary solved exercises, the reader will internalize the theory and will be able to solve all the electrical circuits that may be presented to them in practice.