An ammeter is used to measure __________.

An ammeter is specifically designed to measure electric current, which is the flow of electric charge in a circuit. It provides a direct reading of the current in amperes (A), allowing users to understand how much current is flowing through different components of an electrical system. This measurement is critical in diagnosing electrical issues, ensuring that circuits function within their specified limits, and maintaining electrical safety.

Current is a fundamental concept in electricity, as it impacts everything from circuit design to troubleshooting. An understanding of how ammeters work and how to interpret their readings is essential for anyone involved in electrical maintenance or troubleshooting tasks. The precision and functionality of an ammeter make it an indispensable tool for electrical professionals and hobbyists alike.