Which law focuses on the relationship between power, voltage, and current?

The law that specifically focuses on the relationship between power, voltage, and current is the Power Law. This law defines the mathematical relationship that connects these three electrical parameters, typically expressed as Power (P) equals Voltage (V) times Current (I), or P = V x I.

Understanding this relationship is crucial in the field of utility marketing and electrical engineering because it allows professionals to calculate how much power is consumed in a circuit based on its voltage and the current flowing through it. This knowledge aids in assessing energy usage and efficiency in various applications, which is vital for both consumers and utility companies.

The other options relate to different aspects of electrical theory, like Ohm's Law, which deals with voltage, current, and resistance relationships, or concepts that don’t specifically outline the vital interconnections involving power directly.