PHYIC CALCULATOR
Impedance Calculator
A precise tool.
What is the Impedance Calculator & How does it work?
Impedance in an AC circuit is a measure of the opposition that a circuit presents to a current when a sinusoidal voltage is applied. It combines both resistance and reactance, which can be either inductive or capacitive.
Inductive reactance (X_L) is proportional to the frequency of the AC current and the inductance of the circuit. Capacitive reactance (X_C), on the other hand, is inversely proportional to both the frequency and the capacitance.
Z = sqrt{R^2 + (X_L – X_C)^2}
Z = Total Impedance, R = Resistance, X_L = Inductive Reactance, X_C = Capacitive Reactance
Inductive reactance (X_L) is proportional to the frequency of the AC current and the inductance of the circuit. Capacitive reactance (X_C), on the other hand, is inversely proportional to both the frequency and the capacitance.
Parameters
Result
β
Frequently Asked Questions
What is impedance in an AC circuit?
Impedance measures the opposition to current flow in an AC circuit, considering both resistance and reactance.
How do I calculate total impedance?
Use the formula Z = β(RΒ² + (X_L – X_C)Β²), where R is resistance, X_L is inductive reactance, and X_C is capacitive reactance.
What affects inductive reactance?
Inductive reactance increases with higher frequency and greater inductance in the circuit.
How does capacitance affect impedance?
Capacitive reactance decreases with higher frequency and greater capacitance, reducing overall impedance.
Can impedance be zero?
Impedance cannot be zero in a practical AC circuit due to the presence of resistance and reactance.
What is the unit for impedance?
The unit for impedance is ohms (Ξ©).
How does impedance differ from resistance?
Impedance includes both resistance and reactance, while resistance only accounts for opposition to current flow in DC circuits.
Results are for informational purposes only and do not constitute professional advice.