What is the formula for calculating electrical power?

The formula for calculating electrical power is derived from Ohm's law and defines the relationship between voltage, current, and power. Power, measured in watts, is calculated by multiplying the voltage (in volts) by the current (in amperes). This principle is founded on the understanding that power is the rate at which electrical energy is transferred by an electric circuit.

When you apply a voltage across a conductor, the current flows through it, and the product of these two factors gives you the amount of power being utilized or dissipated in that circuit. This relationship is fundamental in electrical engineering and is utilized in a variety of applications, from household wiring to complex electrical systems. Thus, the second option correctly represents this relationship, emphasizing the multiplication of voltage and current to find power in watts.