Phase Angle in LCR Circuit

📊 intermediate

$$\tan \phi = \frac{X_L - X_C}{R}$$

The angle by which the current lags or leads the voltage in an alternating current circuit.

Variables & Units

$\phi$

Phase angle

Unit: Degrees/Radians

$X_L, X_C$

Inductive and Capacitive Reactance

Unit: Ohm ($\Omega$)

$R$

Resistance

Unit: Ohm ($\Omega$)

Key Information

📐 Derived From

Phasor diagram of voltage components.

💡 Example

Finding lead/lag in an audio amplifier circuit.

🔧 Applications

Power factor correction and filter design.

⚠️ Constraints

Series LCR circuit; sinusoidal input.

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