Which type of current is characterized by a consistent direction of electron flow?

The correct choice is based on the fundamental characteristics of electric currents. Direct Current (DC) is defined by the continuous flow of electric charge in a single direction. This unidirectional flow means that electrons move consistently from the negative terminal to the positive terminal of a power source, such as a battery. This property of DC makes it suitable for many applications, especially in electronics like powering devices and charging batteries.

In contrast, Alternating Current (AC) does not have a consistent direction of flow. Instead, it periodically reverses direction, typically many times per second depending on the frequency of the AC supply (for example, in North America, this is usually 60 Hz). This nature of AC allows it to efficiently transmit electricity over long distances, but it does mean that the flow of electrons alternates back and forth.

Understanding the characteristics of DC is crucial, especially for technicians who work with electronic systems, batteries, and various types of power supplies.