Article 2.0.3S : Power Formulas in DC and AC Single-Phase & Three-Phase Circuits
The following table shows the different electrical power formulas in both AC and DC circuits.
| Quantity | DC | AC (1-Phase) | AC (3-Phase) |
Power (W) | - P = V x I
- P = I2 x R
- P = V2 / R
| - P = V x I x Cos Ф
- P = I2 x R x Cos Ф
- P = V2 / R (Cos Ф)
| - P = √3 x VL x IL x Cos Ф
- P = 3 x VPh x IPh x Cos Ф
- P = 3 x I2 x R x Cos Ф
- P = 3 (V2 / R) x Cos Ф
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