What is one watt of power equivalent to?

One watt of power is defined as the rate at which energy is transferred or converted and is mathematically expressed in terms of voltage and current. Specifically, one watt is the product of one volt of electrical potential (voltage) and one ampere of electrical current.

This relationship is derived from Ohm's Law and the formula for electrical power, which states that power (measured in watts) equals voltage (in volts) multiplied by current (in amperes). Therefore, the correct answer succinctly captures this principle by stating that one watt corresponds to one volt of pressure multiplied by one amp of current. This fundamental law is essential in understanding how electrical systems operate and enables the calculation of power usage in a variety of applications.

In the context of the other choices, they illustrate combinations of voltage and current that do not yield exactly one watt. For instance, two volts multiplied by two amps would equal four watts, while two volts multiplied by one amp would equal two watts. These combinations, therefore, do not define one watt but rather represent different amounts of power, which is why they are not considered correct.