An electron travelling in a region of lower electrostatic potential V₁ passes into a region of higher potential V₂. If we compare the velocity of the electron in the region of higher potential V₂ to that of its earlier velocity in the region of V₁ , that will

Increases

Electric field is from Higher potential to lower potential so it will be directed from V₂ to V₁.

Since electron has negative charge so it will experience force opposite to direction of electric field. electron has large velocity in region of Higher potential i.e V₂