What formula is used to calculate electric power?

The formula used to calculate electric power is P = VI, which defines power as the product of voltage (V) and current (I). This relationship highlights that power is directly proportional to both the voltage across a device and the current flowing through it. When you increase either the voltage or the current in a circuit, the overall power consumed or delivered by the electrical device will increase as well.

This formula is fundamental in understanding how electrical circuits operate and is applicable in various scenarios, such as calculating the power consumed by appliances or electrical components in a circuit. It provides a straightforward method to determine how much energy a device uses over time, which is essential for both theoretical calculations and practical applications in electronics and electrical engineering.