They are immersed in an electrolytic solution Dipped in
the solution, the electrodes exchange charges with the electrolyte The positive electrode has a potential difference V+ (V+ > 0) between
itself and the electrolyte solution immediately adjacent to it marked
A in the figure Similarly, the negative electrode develops a negative
potential  – (V– ) (V– ≥  0) relative to the electrolyte adjacent to it,
marked as B in the figure