1 Answer
The equation for active power (also called real power) in an electrical circuit is:
\[
P = V \times I \times \cos(\phi)
\]
Where:
Key Points:
\[
P = V \times I \times \cos(\phi)
\]
Where:
- P is the active power in watts (W)
- V is the voltage in volts (V)
- I is the current in amperes (A)
- \(\cos(\phi)\) is the power factor, where \(\phi\) is the phase angle between the voltage and current waveforms.
Key Points:
- Active power represents the actual power that is used or consumed by the circuit to do useful work (like lighting a bulb or running a motor).
- The power factor (\(\cos(\phi)\)) accounts for the phase difference between the voltage and current. When they are perfectly in sync, the power factor is 1, and the power is purely active.