The millicoulomb (mC) is a unit of electric charge that measures the quantity of electricity, representing one-thousandth of a coulomb (C). It is used to express relatively small amounts of charge, particularly in applications involving batteries, capacitors, and electrostatic discharges. The symbol for millicoulomb is "mC," and it is widely adopted in both practical and scientific contexts for precise measurement and calculation. In fields such as electronics, electrical engineering, and physics, the millicoulomb plays a crucial role in quantifying charge in circuits, devices, and experimental setups. By providing a convenient and standardized unit for measuring and comparing electric charges, the millicoulomb facilitates accurate analysis, design, and troubleshooting of electrical systems, making it an essential tool for professionals and researchers alike.