Explanation:
Ampere is the SI unit of electric current and one of the seven base units in the International System of Units (SI). Electric current refers to the flow of electric charge through a conductor such as a metal wire. When electrons move through the conductor due to a potential difference, electric current is produced. One ampere is defined as the current when one coulomb of electric charge passes through a point in a conductor in one second. The unit is named after the French physicist André‑Marie Ampère, who made important contributions to the field of electromagnetism. Electric current is a fundamental concept in physics because it is responsible for operating electrical devices such as lights, fans, televisions, and computers. In electrical circuits, current is measured using an instrument called an ammeter. Understanding electric current also helps in learning other electrical quantities such as voltage, resistance, and power. These quantities are related through Ohm’s law, which states that voltage equals current multiplied by resistance. Because electricity plays a major role in modern technology, questions about the SI unit of current are frequently asked in competitive examinations such as SSC, Railway, UPSC, and state‑level government exams.