P V x I x Cos F. P 3 x V L x I L x Cos F. Basic Electric Power Formula in AC DC Circuits Power Formulas in DC Circuits.
As is implied by the equation for power a unit of power is equivalent to a unit of work divided by a unit of time.
Average power formula The ratio of total work to the total time is called average powerMathematically it is expressed as If DW is the work done in time Dt then average power will be. P I 2 R. The standard metric unit of power is the Watt. In fluid power systems such as hydraulic actuators power is given by P t p Q displaystyle PtpQ where p is pressure in pascals or Nm 2 and Q is volumetric flow rate in m 3 s in SI units.