How can a negative charge move towards a position of a higher electric potential from lower potential but lose electric potential energy?
From my understanding, I understand that for a positive charge, it must lose potential energy from the electric field as work is done by the electric force in the direction of the E-field as seen in the diagram. This can be seen as it moves from high electrical potential energy to low potential energy. However, for a negative charge, it would do work up this electric field. I do not understand how it can do work and as the diagram suggests gain electrical potential energy as it moves up to a higher potential energy.