\[P_{avg} = \frac{\Delta E}{\Delta t}\]
Variables
Pavgaverage power (W)
dEenergy transferred (J)
dttime interval (s)
Description
What is this formula?
The average power equation calculates the rate of energy transfer over a time interval.
When to use it
Use this formula when analyzing engines, electrical systems, heat transfer, industrial machinery, or any process involving energy exchange over time.
Example
A system transfers 24000 J of energy in 40 s.
Data:
dE = 24000 J
dt = 40 s
Formula:
Pavg = dE/dt
Substitution:
Pavg = 24000/40
Result:
Pavg = 600 W
Applications
Mechanical engineering, electrical systems, thermodynamics, industrial energy analysis, power systems, and physics education.