What is the equation for calculating power in an electrical circuit?

The equation for calculating power in an electrical circuit is based on the relationship between voltage, current, and resistance as described by Ohm's Law. Power is defined as the rate at which electrical energy is transferred by an electric circuit. The correct equation, Power = Voltage x Current, demonstrates that power is directly proportional to both the voltage across an electrical component and the current flowing through it.

This means that if either the voltage or the current increases while the other remains constant, the overall power consumed or produced in the circuit will increase as well. This relationship is crucial for understanding how electrical devices operate and the calculations needed for safe and effective usage of electricity in various applications.

The other options reflect misunderstandings of the relationships between power, current, and voltage. For instance, dividing current by voltage does not provide a meaningful measure of power, nor does adding current to voltage yield power in an electrical circuit. Similarly, power cannot be directly derived as current multiplied by resistance, which instead relates to Ohm's law and resistance, not power. Understanding the proper calculation of power helps ensure efficiency and safety in electrical systems.