AC stands for **Alternating Current**, and DC stands for **Direct Current**.
- **Alternating Current (AC)**: The flow of electric charge changes direction periodically. It’s the type of current commonly used in homes and businesses for powering things like lights, appliances, and electronics.
- **Direct Current (DC)**: The flow of electric charge is in one direction only. DC is used in batteries, solar cells, and many electronic devices like laptops and smartphones.