The electron represents one of the most exciting and important particles in atomic science. Electrons are very small and mobile fundamental (or elementary) particles that engage in orbitals around atomic nuclei, or can move as an electric current through a conductor, or can spectacularly jump en masse through dielectric material in the form of lightning or an electric arc. They are also important in atomic bonding and chemical reactions. Electric current is usually understood to be caused by the movement of electrons, but electric charge carriers aren't always electrons, and they aren't always negative. In animals (including humans), electric charge carriers are primarily sodium, potassium, calcium, and magnesium ions, which are all positively charged, and when a nerve passes an electric signal, it consists of positive charge movement. For semiconductors, electric current cannot be fully explained simply in terms of the movement of electrons (the negative charge carrier), and a positive charge carrier is required.With like-charges repelling and opposite-charges attracting, we treat negative electric charge as being distinctly different to positive electric charge, or at least that the electric fields associated with each type of charge to be different. This paper considers what electric charge and associated electric fields might consist of, and attempts to explain the reasons why the positive and negative fields of electric charges interact with each other as they do.In terms of like-pole repulsion and opposite pole attraction, magnetic fields are quite similar to electric fields, and are inter-related as implicit in the term ‘electromagnetic’. This paper looks at several models for the electron and its role in electric currents, and explores the nature of and differences between electric and magnetic fields with reference to the STEM electron model.