What is electrical power measured in?

Electrical power is measured in watts. This unit represents the rate at which electrical energy is transferred or converted. Power is calculated using the formula P = V x I, where P is power in watts, V is voltage in volts, and I is current in amperes. This relationship shows that power is a function of both the voltage applied across a circuit and the current flowing through it.

Understanding watts as a measurement of power is crucial because it reflects how much work is done over time by an electrical system. For example, when appliances or devices are rated in watts, that rating indicates how much electrical power they consume while in use. This concept is part of the fundamental principles of electricity and is essential for understanding how electrical systems operate efficiently and safely. The other units mentioned—volts, amperes, and ohms—represent voltage, current, and resistance, respectively, and do not measure power directly.