In a DC circuit, the flow of electrons occurs in how many directions?

In a DC circuit, the flow of electrons occurs in one direction only. This unidirectional flow is a defining characteristic of direct current (DC). In such circuits, electrons move steadily from the negative terminal to the positive terminal of the power source. This consistent path ensures that the voltage and current remain stable, which is essential for the reliability of devices powered by DC.

In contrast, other forms of current, such as alternating current (AC), involve a flow of electrons that periodically reverses direction. Therefore, the option describing alternating flow does not apply to DC circuits. The notion of two or more directions does not align with the fundamental properties of DC, where a single, continuous flow towards the positive terminal is key to its operation.