The Ampere is a unit of electric current in the International System of Units (SI). It measures the flow of electric charge through a conductor, such as a wire. One ampere is defined as the amount of current that flows when one coulomb of charge passes through a point in a circuit in one second. Named after the French physicist André-Marie Ampère, the ampere is a fundamental unit in electrical engineering and physics. It is commonly used to describe the current in electrical devices, helping to determine their power consumption and performance.