SI unit of current (ampere)

The ampere is the SI unit of electric current, which measures the flow of electric charge. Imagine electrons as tiny particles moving through a wire; the ampere indicates how many of these particles pass a point each second. Specifically, one ampere equals one coulomb of charge (about 6.24×10^18 electrons) flowing through a conductor every second. It helps quantify how much electricity is flowing, essential for designing and understanding electrical devices and systems, ensuring safe and efficient operation.