By exerting a magnetic field normal to a current-carrying strip we cause a deviation in the path of moving electrons as if our conducting path is a wire along an edge of the strip which at a point is deflected normal to the edge and reaches the other edge and afterwards is continued along this other edge in the same direction as before. It is clear that connecting the two end points of the transverse part of such a wire by a minor wire we expect a part of the main current to pass through this minor wire. The direction of such a current flowing in the minor wire is such that as if the current-carrying charges in the main current-carrying strip are positive charges. This is the basis of this article. A quite practical experiment is proposed for testing the presented theory.