Which formula correctly calculates power?

The formula P = I × E is the correct expression for calculating electric power, where P represents power in watts, I is the current in amperes, and E is the voltage in volts. This relationship follows the principles of electrical circuits, specifically Ohm's Law and the definition of power.

In electrical systems, power is defined as the rate at which energy is consumed or produced. When you multiply current (the flow of electric charge) by voltage (the potential difference), you obtain the power in watts. This formula can be derived from more fundamental equations. For instance, power can also be expressed as the product of current and resistance times current, which leads back to the same relationship when considering voltage as the product of current and resistance (Ohm's Law: V = I × R).

Using this understanding, the other formulas mentioned do not accurately portray the relationship between voltage, current, and power in the same way. While P = I × R is indeed a component of electrical principles relating to Ohm's Law, it specifically calculates voltage rather than power. Similarly, P = E / R does not adhere to standard power calculation techniques and misrepresents the relationship between the quantities involved. Therefore, focusing on P = I × E provides the