Calculadora de Impedância AC — Formula

AC Impedance

Impedance is the total opposition to current flow in an AC circuit, including both resistance and reactance.

Formula

Z = sqrt(R² + (XL - XC)²)

where XL = 2*pi*f*L is inductive reactance and XC = 1/(2*pi*f*C) is capacitive reactance. The phase angle is phi = arctan((XL - XC) / R).

Exemplo Resolvido

A series RLC circuit with R = 100 Ω, XL = 150 Ω, XC = 80 Ω.

  1. Z = sqrt(R² + (XL - XC)²)
  2. Z = sqrt(100² + (150 - 80)²)
  3. Z = sqrt(10000 + 4900)
  4. Z = sqrt(14900) = 122.07 Ω
  5. phi = arctan(70/100) = 34.99°