Since an electron has a negative charge, it will move in an electromagnetic field under the Coulomb force.

lby$5117$@psu.edu$0$P$65-4$D$-79-49-$A$4$E$6-50296$

$$

When an electron moves in the opposite direction as the direction of the electric field, we can conclude that:

It moves from a high potential to a low potential, and its electric energy increases.It moves from a low potential to a high potential, and its electric energy decreases.It moves from a low potential to a high potential, and its electric energy increases.Both its electric potential and electric potential energy stay constant.It moves from a high potential to a low potential, and its electric energy decreases.