alleryIn an LCR series AC circuit, impedance:
AR × X_L
BR + L + C
Csqrt(R² + (X_L - X_C)²)
DR + X_L + X_C
Answer & Solution
Correct answer: C. sqrt(R² + (X_L - X_C)²)
Z = sqrt(R² + (X_L - X_C)²).
Magnitude of impedance phasor.
**Phase:** tan φ = (X_L - X_C)/R. Used to find current amplitude I₀ = V₀/Z.
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