WAEC - Physics (2022 - No. 24)
Which of the following statements about electric potential energy is not correct?
The electric potential energy of a positively charged particle increases when it moves to a point of higher potential
The electric potential energy of a negatively charged particle increases when it moves to a point of lower potential
The electric potential energy of a positively charged particle decreases when it moves to a point of higher potential
The work done in taking a charged particle around a closed path in an electric field is zero.
Εξήγηση
The potential energy for a positive charge increases when it moves against an electric field(from lower potential to higher potential),
And decreases when it moves with the electric field((from higher potential to lower potential);
The opposite is true for a negative charge. Unless the unit charge crosses a changing magnetic field, its potential at any given point does not depend on the path taken.