Answer:
The Potential energy is converted to Kinetic energy. The total energy is conserved.
Step-by-step explanation:
When the charge travels through the field, it results in a loss in Potential energy because work is done on the electron.
This potential energy is converted to Kinetic energy.
The total energy of the electron,however, at any point in time is conserved. Mathematically,
TE = PE + KE
TE = Total energy.
PE = Potential energy.
KE = Kinetic energy.
In a way, if you want to imagine it, it's just like a mass moving in a gravitational field, i.e. gravitational force acting on a mass.