How is power calculated in an electrical circuit?

Power in an electrical circuit is calculated by multiplying voltage by current. This relationship is defined by the formula P = V x I, where P represents power measured in watts, V represents voltage in volts, and I represents current in amperes.

This formula reflects how much work is done or energy is used per unit of time in an electrical system. When voltage is increased while maintaining a consistent current, the power increases proportionally, which is crucial for understanding how electrical devices operate and how much energy they consume.

The other options do not accurately describe the relationship between power, current, and voltage. Understanding this formula is fundamental for anyone working with electrical circuits and can help in effectively managing and designing electrical systems.