The unit for measuring electric current is the "ampere," often shortened to "amp." One ampere is defined as one coulomb of electric charge passing through a point in a circuit per second. The symbol for the ampere is "A." This unit is essential for understanding electrical systems, as current is one of the fundamental quantities in electricity, alongside voltage and resistance. Different devices draw varying amounts of current based on their power requirements and specifications. Measuring current is crucial for ensuring safety and functionality in electrical and electronic applications.