Which formula is used to calculate electrical power?

The formula used to calculate electrical power is based on the relationship between voltage, current, and power. Power is defined as the rate at which energy is consumed or converted in an electrical circuit.

When using the formula ( P = V \times I ), power (P) is calculated by multiplying the voltage (V) across a component by the current (I) flowing through it. This equation highlights that power increases if either the voltage or the current increases, demonstrating a direct proportional relationship.

This formula is fundamental in electrical engineering and physics because it allows for determining how much electrical energy is being used in a circuit over time. It is widely applicable in various contexts, such as in electrical devices, circuits, and energy consumption calculations, making it essential knowledge for understanding electrical systems.

The other formulas listed do represent relationships involving power but do not define power itself in the context of voltage and current as clearly and directly as ( P = V \times I ) does. For instance, the formula relating current and resistance does not pertain directly to power in its essential form. Thus, ( P = V \times I ) is the correct formula for calculating electrical power.