Answer: The correct answer is "a positive charge always moves from a higher potential to a lower potential".
Explanation:
Electric potential: It is defined as the work done in moving a unit positive charge from from reference point to a particular point.
The electric potential difference is defined as the electric potential between two points. In the circuit, battery provides the potential difference so that the electron can flow in the conductor easily. The negative terminal of the battery is at lower potential and the positive terminal of the battery is at higher potential.
The electron moves from lower potential to higher potential but the direction of the current is opposite to the direction of the electron.
A positive charge is moved from a higher potential to a lower potential but the negative charge moves from a lower potential to a lower potential.
In the given problem, a positive charge is moving from rest under the influence of an electric potential. Therefore, the correct option is (a).
