What is the formula used to calculate electrical power?

The formula for calculating electrical power is defined by the relationship between voltage and current: Power (P) equals Voltage (V) multiplied by Current (I). This formula stems from Ohm's Law and the fundamental definitions of electrical power.

In an electrical circuit, power is the rate at which energy is transferred or converted. When you multiply voltage (the potential difference that drives the flow of electrical charge) by the current (the flow of electric charge), you obtain the power consumed or produced in that circuit. Given that power represents energy usage over time, this formula allows you to understand how much electrical energy is being transferred per unit time.

The other formulas are related to different electrical concepts but do not correctly represent the direct calculation of power. For instance, dividing current by voltage does not yield a meaningful power representation, nor does multiplying resistance by current directly relate to power without considering voltage. Each of these alternatives serves a different purpose in analyzing circuit behavior but is not the correct formula for power calculation.