What is the primary function of an ammeter?

The primary function of an ammeter is to measure current flow. This instrument is specifically designed to evaluate the amount of electric current passing through a circuit, typically expressed in amperes (A). When connected in series with a circuit, the ammeter provides a direct reading of the current, allowing electricians to assess how much electricity is flowing at any given time. Accurate current measurement is crucial for diagnosing issues in electrical systems, ensuring proper operation, and preventing overloads.

Understanding the function of an ammeter is essential for maintaining safe and efficient electrical installations. In contrast, devices that measure voltage or resistance operate using different principles and are not capable of providing current measurements. Voltage meters (voltmeters) assess the electrical potential difference within a circuit, while ohmmeters evaluate the resistance across circuit components. Power consumption is typically measured in watts, utilizing other devices such as wattmeters, which consider both current and voltage in their calculations. Each instrument serves a specific role, underlining the importance of using the correct tool for electrical measurements.