What are the 3 formulas of power?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The three power formulas in electrical circuits are:
- P = V × I (power = voltage × current)
- P = I² × R (power = current squared × resistance)
- P = V² ÷ R (power = voltage squared ÷ resistance)
These derive from combining Ohm's Law with the basic power equation and allow you to calculate power when you know different combinations of V, I, and R.
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