WAEC Physics 2022 Paper

Concept:Electric potential energy is given by $U = qV$, so it depends on both the sign of the charge and the electric potential.Explanation:For a positive charge, $q > 0$, so $U = qV$ increases when it moves to a higher potential. Thus, option A is correct, while option C is not correct. For a negative charge, $q < 0$, moving to a lower potential makes $U = qV$ increase, because the negative charge becomes less negative at lower potential. Therefore, option B is correct. In a purely electrostatic field, the field is conservative, so the work done around a closed path is zero. Thus, option D is correct. The only incorrect statement is option C.Answer:The electric potential energy of a positively charged particle decreases when it moves to a point of higher potential — Option C.