Power is calculated as the ratio of which two quantities?

The correct choice is based on the definition of power in physics, which is defined as the rate at which work is done or energy is transferred over time. Specifically, power quantifies how quickly energy is converted from one form to another, such as from electrical energy to mechanical energy or from potential energy to kinetic energy. This relationship can be mathematically expressed as power being equal to energy divided by time.

Understanding this concept is crucial, as it applies to various real-world scenarios where energy is utilized, such as in engines, electrical devices, and even biological systems. When we say power is energy over time, it highlights how much energy is used or transferred in a given period, providing insights into efficiency and performance.

Other options do not accurately reflect the definition of power. The ratio of force over mass is related to acceleration according to Newton's second law of motion. Work over distance pertains to the concept of force, and pressure over volume relates to thermodynamics without any direct connection to the concept of power as defined in the context of energy transfer.