This paper presents an exploratory study about educational potentialities of an augmented reality (AR) application developed for DC circuit fundamentals. Particularly the study aims to characterize student involvement using the application as well as its use as an additional experimental tool and to characterize how students perceive their experience and their learning through the use of this AR application. It is also briefly described how this application was developed and how the exploratory study was implemented involving STEM students. The AR application confirmed to be manageable and students have explored its configurations intuitively. Additionally, the AR tool usability according to our preliminary results showed to be effective for the AR developed application purposes, has induced student satisfaction and revealed very good student perceptions about learning perspectives. So, this study showed this AR application for DC circuits has a great educational potential.