[Arturo]

Hello everyone,,,
It was given that accumulation of charge hinders the flow of electrons and hence the conversion of chemical energy to electrical energy stops after a while. If we connect an ammeter in series with the circuit we will see that the needle changes for a fraction of a second and then indicates that there is no flow of charges. Why does accumulation of charge in half cells result hinders the flow of current?

[Borek]

Simple physics. What do you know about behavior of charges? How is the potential defined?