What is the characteristic of unidirectional current?

Unidirectional current refers to a flow of electric charge that consistently moves in one direction. This characteristic is fundamental to the concept of direct current (DC), where electrons flow from the negative terminal to the positive terminal of a power source. Unlike alternating current (AC), where the flow of electrons periodically reverses direction, unidirectional current maintains a constant direction, making it stable and predictable.

In practical applications, unidirectional current is commonly used in batteries, electronic devices, and many types of circuits that require a steady voltage. This consistent flow allows for reliable performance in devices like smartphones and computers that rely on stable and continuous power.

Understanding the nature of unidirectional current helps in grasping key concepts in electrical theory and applications, clarifying its distinction from other current types that may vary or alternate in flow.