For electrical power and other forms of power, see Energy.

Power is a key concept in physics, describing how quickly work is done or energy is transferred. It's about measuring the speed at which energy is used to perform a task or the amount of energy consumed within a certain timeframe.

The standard measurement for power is the Watt (W), but there are other ways to measure it too, like horsepower (HP), calories per hour (cal/hr), and foot-pounds per minute (ft-lb/min). The basic formula to calculate power is P=W/t, where P stands for power, W for work, and t for time. Another way to look at it is P=E/t, where E represents energy. This gives us a way to quantify and understand the efficiency of processes and machines in our daily lives and in the scientific world.

Definition[edit | edit source]

In a physics term, power is the rate at which work takes place or energy is transmitted. It can also be defined as the amount of energy needed or used to complete an activity over a period of time.

Units[edit | edit source]

The SI unit for power is the the Watt or "W". Other non SI units include:

  • horsepower "HP",
  • calories per hour, "cal/hr", and
  • foot pounds per minute "ft-lb/min".

Equation[edit | edit source]

The equation for power is where P is power, W is work and t is time. A second equation for power is where E is energy and t is time.

External links[edit | edit source]

FA info icon.svg Angle down icon.svg Page data
Authors Jaran Ellermeyer
License CC-BY-SA-3.0
Language English (en)
Related 0 subpages, 16 pages link here
Impact 324 page views
Created October 5, 2007 by Jaran Ellermeyer
Modified March 29, 2024 by StandardWikitext bot
Cookies help us deliver our services. By using our services, you agree to our use of cookies.