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Electrical Calculator
Calculate voltage, current, resistance, power, and component values
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Electrical Formulas Reference
Ohm's Law
- V = I × R
- I = V / R
- R = V / I
Power
- P = V × I
- P = V² / R
- P = I² × R
Resistors
- Series: R_total = R₁ + R₂ + ...
- Parallel: 1/R_total = 1/R₁ + 1/R₂ + ...
Capacitors
- Xc = 1 / (2πfC)
- E = ½CV²
- Q = CV
Inductors
- XL = 2πfL
- E = ½LI²
- V = L(dI/dt)
AC Circuits
- Z = √(R² + X²)
- f = 1 / T
- ω = 2πf