Power (Physics)

In physics, Power (PP) is the rate at which work is done (or energy is transferred) over time (tt). Recall that work is a change in energy, therefore Power is the change in energy (EE) over the change in time, or P=ΔE/ΔtP=\Delta{E}/\Delta{t}.

Power is measured in watts. One watt is equal to 1 joule per second, or W=J/sW=J/s.

Power can also be expressed as as the product of force (FF) and velocity (VV), or P=FVP=FV, because force is energy transferred to an object (a change in energy) and velocity is the change in position over time (a change in time).

Video: Power - Physics 101 / AP Physics Review

Deeper Knowledge on Power (Physics)

Watt's Law (Power Law)

A formula to define the relationship between power, voltage, and current (P=IV)

Broader Topics Related to Power (Physics)


The fundamental nature and properties of matter, energy, and motion

Power (Physics) Knowledge Graph