Following are the Power Formulas in AC & DC Circuit
| Sr. | Description | Formula |
|---|---|---|
| 1 | Power in DC Circuits | P = V X I P = I2 X R P = V2 / R |
| 2 | Power in AC Circuit (Single Phase) | P = V x I x Cosθ P = I2 X R X Cosθ P = V2 /R (Cosθ) |
| 3 | Power in AC Circuit (3 Phase) | P = 3√ VL X IL x Cosθ P = 3 Vp X Ip x Cosθ P = 3I2 X R X Cosθ P = 3 (V2/R) X Cosθ |