What does P5 refer to in electrical terminology?

In electrical terminology, P5 refers to 'Power.' Power is a fundamental concept in electricity, representing the rate at which electrical energy is transferred or converted. It is typically measured in watts (W) and calculated by the equation P = IV, where P stands for power, I for current (in amperes), and V for voltage (in volts). Understanding power is crucial because it tells you how much energy is being consumed or used by an electrical device over time. This relationship highlights why it's important to know how much power various devices require to function properly, as well as the impact on energy bills and efficiency in electrical systems.