# Power (physics)

## Power (physics)

In physics, power is the rate at which work is performed or energy is converted[1][2]

If ΔW is the amount of work performed during a period of time of duration Δt, the average power Pavg over that period is given by the formula

P_\mathrm{avg} = \frac{\Delta W}{\Delta t}\,.

It is the average amount of work done or energy converted per unit of time. The average power is often simply called "power" when the context makes it clear.

The instantaneous power is then the limiting value of the average power as the time interval Δt approaches zero.

P = \lim _{\Delta t\rightarrow 0} P_\mathrm{avg} = \lim _{\Delta t\rightarrow 0} \frac{\Delta W}{\Delta t} = \frac{dW}{dt}\,.

In the case of constant power P, the amount of work performed during a period of duration T is given by:

W = PT\,.

In the context of energy conversion it is more customary to use the symbol E rather than W.

slot casino

sports betting odds

**taixyz1992**-

Number of posts : 100

Age : 26

General Location : Vietnam

Team Edward/Team Jacob? : Edward

Favorite Book Other Than Twilight : None

Registration date : 2010-08-29

Similar topics

» power tool dragon deck(rate and fix)

» The Power of Persuasion (version 1, part 1)

» Power consumption: Mark II vs. Mark III

» VTA st 70 power

» ST-70 / Mark III power transformer heat (AGAIN)

» The Power of Persuasion (version 1, part 1)

» Power consumption: Mark II vs. Mark III

» VTA st 70 power

» ST-70 / Mark III power transformer heat (AGAIN)

Page

**1**of**1****Permissions in this forum:**

**cannot**reply to topics in this forum