Power in an electrical circuit is measured in what unit?

Power in an electrical circuit is measured in Watts. This unit measures the rate at which electrical energy is converted into another form, such as light, heat, or motion, over a certain period. In practical terms, power is calculated as the product of voltage (in volts) and current (in amperes), which reflects the total energy consumed by the electrical device during operation. The formula to calculate power is P = V × I, where P is power in watts, V is voltage in volts, and I is current in amperes.

Understanding the unit of power is fundamental in electrical and electronic applications, as it helps in determining the efficiency and performance of devices. For instance, knowing the wattage allows you to assess how much energy a device would consume and is critical for safe circuit design, ensuring components are rated to handle the expected power levels without overheating or failing.