EngiRef / Electrical Engineering Formula
Power Factor
Power Factor: Cosine of the phase angle between voltage and current. An AC Circuits formula in electrical engineering. Variables PF and φ, each with SI and…
AC Circuits
Specification
- Name
- Power Factor
- Discipline
- electrical
- Category
- AC Circuits
- LaTeX
- PF = \cos(\phi)
- Description
- Cosine of the phase angle between voltage and current
- Conditions
- Sinusoidal steady-state; φ is the V-I phase angle
- Can solve for
- PF, φ
- Tags
- power, factor, phase, cos
Variables
| Symbol | Name | Unit | Si Unit |
|---|---|---|---|
| PF | Power Factor | - | - |
| φ | Phase Angle | ° | rad |
Common questions
- What is the Power Factor formula?
- Cosine of the phase angle between voltage and current. It sits under AC Circuits, Electrical engineering in the EngiRef reference.
- What do the symbols in the Power Factor formula mean?
- In Power Factor, PF is power factor; φ is phase angle in °.
- When does the Power Factor formula apply?
- Power Factor holds under this condition: Sinusoidal steady-state; φ is the V-I phase angle.