What does a wattmeter specifically measure?

A wattmeter specifically measures the electrical power consumed in watts. This instrument is designed to provide a direct readout of power, which is the rate at which electrical energy is being used in a circuit. Power is calculated as the product of voltage and current (P = VI), and a wattmeter takes into account both parameters to give an accurate measurement of how much electrical energy is being consumed at any given moment.

Understanding this function is crucial for anyone working in electrical applications since monitoring power consumption is key to energy management and efficiency. By measuring in watts, users can make informed decisions about energy usage, troubleshoot electrical issues, and ensure that systems are operating within safe parameters.