Current measurement refers to the process of determining the flow of electric charge in a circuit, typically expressed in amperes (A). This measurement is crucial for understanding how much electricity is being used by devices and systems. Tools like ammeters are commonly used to measure current, allowing engineers and technicians to assess the performance and safety of electrical systems. In electrical circuits, current can be either direct current (DC), which flows in one direction, or alternating current (AC), which changes direction periodically. Accurate current measurement helps in diagnosing issues, optimizing energy consumption, and ensuring that electrical components operate within their specified limits.