Calculadora de Impedancia en Corriente Alterna
Calcula la impedancia total de un circuito de corriente alterna. Combina resistencia, reactancia capacitiva e inductiva para obtener Z.
Impedance (Z)
122.0656 Ω
Impedance (Z) vs Resistance (R)
Fórmula
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).
Ejemplo Resuelto
A series RLC circuit with R = 100 Ω, XL = 150 Ω, XC = 80 Ω.
- 01Z = sqrt(R² + (XL - XC)²)
- 02Z = sqrt(100² + (150 - 80)²)
- 03Z = sqrt(10000 + 4900)
- 04Z = sqrt(14900) = 122.07 Ω
- 05phi = arctan(70/100) = 34.99°
Preguntas Frecuentes
What is the difference between resistance and impedance?
Resistance opposes DC and AC equally. Impedance is the AC equivalent that includes reactance from capacitors and inductors, causing phase shifts.
When is impedance minimized?
When XL = XC (resonance). At resonance, impedance equals pure resistance R, and the circuit passes maximum current.
What does the phase angle mean?
It indicates the time difference between voltage and current peaks. Positive phase means current lags voltage (inductive); negative means current leads (capacitive).
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