How is electrical power calculated?

The calculation of electrical power is based on the relationship between voltage, current, and power itself. The correct formula, Power (P) = Voltage (V) x Current (I), reflects how power is derived from the flow of electrical energy in a circuit.

In this formula, voltage represents the potential difference that drives the current through a circuit, and current is the flow of electric charge. When you multiply voltage by current, you effectively calculate the rate at which energy is consumed or produced in the electrical system. This relationship is fundamental in understanding how electrical devices operate, as it directly connects the input electrical characteristics to power usage.

For example, if you have a device operating at a voltage of 120 volts and drawing a current of 10 amperes, the power consumed by that device can be calculated as follows: P = 120 V x 10 A = 1200 watts. This means the device uses or produces 1200 watts of electrical power.

Other provided options do not correctly represent the fundamental principles of power calculation in electrical circuits. The formula involving resistance and current does not align with the standard calculation for power, as resistance is a separate factor that affects how much current flows for a given voltage, but it does not directly multiply with