Which formula is used for calculating power?

The formula used for calculating power in electrical circuits is represented by the equation P = I × E, where P stands for power, I represents current, and E signifies voltage (or electromotive force). This formula derives from the fundamental relationship in electrical systems, where power is the rate at which energy is consumed or produced.

In this context, current (I) measures the flow of electric charge, and voltage (E) functions as the electrical pressure that drives this current through a circuit. Therefore, when you multiply current by voltage, you can determine the total power being used in the circuit, measured in watts.

Power calculation is essential for understanding energy consumption in various electrical devices and systems, particularly in Industry 4.0, where efficient energy usage is a critical consideration.