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(A) The electric potential energy $U$ of a charge $q$ in an electric potential $V$ is given by $U = qV$. When a unit positive charge $(q = 1)$ is move

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increases.

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(A) The electric potential energy $U$ of a charge $q$ in an electric potential $V$ is given by $U = qV$. When a unit positive charge $(q = 1)$ is moved from a region of low potential $(V_L)$ to a region of high potential $(V_H)$,the change in potential energy is $\Delta U = q(V_H - V_L)$. Since $V_H > V_L$,the term $(V_H - V_L)$ is positive. Therefore,$\Delta U > 0$,which means the potential energy increases. Alternatively,work must be done by an external agent against the electric field to move a positive charge from low potential to high potential,and this work is stored as potential energy in the system.

If a unit positive charge is shifted from a region of low potential to a region of high potential,then the electric potential energy of the system

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