AC vs. DC: Understanding the Difference

Ever wonder why some electronics plug in one way… and others literally flip the current

back and forth 60 times a second? Let’s break down AC vs. DC — fast. AC stands for Alternating

Current, and it’s the form of electricity that oscillates direction constantly.

Your wall outlets use AC because it’s efficient for long-distance power transmission. DC stands for Direct

Current, and it flows in one constant direction. Batteries, USB devices,

and most electronics internally run on DC because it provides stable, smooth power for

circuits. Key Differences: Flow: AC reverses direction → DC moves one way.

Voltage Behavior: AC voltage changes in a sine wave → DC voltage stays flat.