How is power traditionally expressed in terms of watts?

Power is traditionally expressed in terms of watts using the formula that states power equals voltage multiplied by current. This fundamental principle is derived from Ohm's Law, which establishes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. The formula is represented mathematically as P = V × I, where P represents power measured in watts.

In this context, voltage is the electrical potential difference, while current is the flow of electric charge. When you multiply these two quantities, you arrive at the power measurement, which indicates the rate at which energy is transferred or converted in the circuit. Understanding this relationship is crucial for effectively managing electrical systems in building maintenance and ensuring efficient energy use.

On the other hand, the other options represent different concepts related to electric circuits but do not directly define power in watts. For instance, the second option focuses on the relationship of current squared with resistance, which is relevant in calculating power dissipation in resistors (according to Joule's Law), but does not define power in terms of voltage and current. The third option involves voltage squared divided by resistance, which aligns with a different rearrangement of Ohm's Law and is also not a direct expression of power. Lastly, the