What is the formula for electrical power?

The formula for electrical power is derived from the relationship between voltage, current, and power. In electrical systems, power (P) is defined as the product of current (i) flowing through a circuit and the voltage (V) across that circuit. This relationship can be mathematically expressed as P = iV.

Understanding this concept is central to the study of electricity and circuits, as it helps to calculate the amount of energy consumed in electrical devices over a specific time period. The unit of power is the watt (W), which is equivalent to one joule per second. This formula applies to both direct current (DC) and alternating current (AC) in its basic form. Power plays a crucial role in determining how much energy is being used or produced by electrical appliances and systems.