What are basic electrical formulas?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The essential basic electrical formulas include:
- Ohm's Law: V = I × R (Voltage = Current × Resistance)
- Power: P = V × I (Power = Voltage × Current)
- Power (alternative): P = I² × R or P = V²/R
- Current: I = /t (Current = Charge ÷ Time)
- Energy: E = P × t (Energy = Power × Time)
- Resistance in series: R_total = R₁ + R₂ + R₃...
- Resistance in parallel: 1/R_total = 1/R₁ + 1/R₂ + 1/R₃...
These formulas are fundamental for calculating electrical uantities, designing circuits, troubleshooting problems, and understanding how electrical systems work.
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