The Mechanical
Engineering Handbook
☰

Home/Calculators/Control Systems & Electrical/Power

Power Calculator













How This Is Calculated


$$ P = IV $$
where:

P   =   Power   (W)

I   =   Current   (A)

V   =   Voltage   (V)


Assumptions


  • The current and voltage are constant (in steady state).
  • The circuit behaves according to Ohm's Law.
  • The power is instantaneous.


Related Calculators


Capacitance Electric Charge Energy Stored Inside a Capacitor Ohm's Law Capacitive Reactance