Electric potential is defined by the relative positions of points A and B, with A being at a higher potential than B, but this does not imply that positive potential indicates a positive charge or negative potential indicates a negative charge. In a scenario with only one electron, an electric field and potential exist without any positive charges, demonstrating that potential can exist independently of charge. Additionally, electric fields and potentials can be contemplated without the presence of charges, although this view may be seen as controversial. Examples include the electric field around a single charge at a distance and electromagnetic waves propagating away from their source. Understanding these concepts requires careful consideration of the nature of potential in both static and dynamic contexts.
