In this paper we discuss how to set up an electrical problem through a problem-based learning (PBL) constructivist approach. PBL is the learning which results from the process of working towards the understanding and the resolution of a problem. Our aim is to show that PBL can be used effectively in teaching electrical engineering. To put this process into effect, two groups were formed at the Department of Electrical Engineering of the Faculty of Engineering at Kocaeli University and the students were asked to sort out an ill-defined problem. In our paper, we explain how the groups conducted the study and arrived at the resolution of the problem through PBL.