how does a larger gap between metals used in simple cell electrodes lead to higher voltage?

Question

“The voltage produced depends on the positions of the two metals in the reactivity series. The further away the metals are in the reactivity series, the larger will be the voltage.”

Edit: I don’t mean physical gap, I mean gap in terms of reactivity

In: Chemistry

Answer 1

Battery voltage is determined by the chemical relation of the materials in the reactivity series. All alkaline batteries produce nominal 1.5V regardless of size or geometry, for example.