What type of current flows in one direction only?

• A. Alternating Current
• B. Direct Current
• C. Static Current
• D. Pulsating Current

Answer: (B)

Direct current flows in one direction only, making it a consistent and stable source of electricity. This type of current is commonly used in many devices such as batteries, where the flow remains constant and does not switch directions. The unidirectional flow of electrons helps maintain a steady voltage, which is essential for the proper functioning of devices that rely on stable power input.

In contrast, alternating current alternates its direction periodically, which is not suitable for applications that require a stable current. Static current refers to the buildup of electric charge in one place, which does not flow, while pulsating current typically refers to direct current that varies in intensity or fluctuates in a series of pulses, still maintaining a unidirectional flow but with intervals of change. Thus, understanding the characteristics and differences between these types of currents helps clarify why direct current is defined specifically by its one-way flow.