In electrical circuits, voltage is defined as the:

Voltage is defined as the electrical force that creates electron movement within a circuit. This force, also known as electric potential difference, essentially acts as the "push" that drives electrons through the conducting materials, allowing electric current to flow. It is measured in volts and is essential for the functioning of electrical devices, as it establishes the potential for current to occur.

In the context of an electrical circuit, when voltage is applied, it causes electrons to move from areas of negative charge (higher electron concentration) to areas of positive charge (lower electron concentration). This movement of electrons is what constitutes an electric current. Therefore, understanding voltage as the force that initiates and sustains this flow is critical in both theoretical and practical applications in electrical engineering and circuit design.

Each of the other options refers to different aspects of electrical circuits. Movement of electrons is related to current, resistance deals with the opposition to that movement, and temporary storage of electrical charge pertains to capacitance. Only the definition of voltage accurately captures the role of electrical force in promoting electron movement.