alleryStart learning →For a series RLC circuit at resonance, the impedance Z seen at the source terminals equals which?
AR only (XL = XC, reactances cancel)
BjωL only (purely inductive)
C1/(jωC) only (purely capacitive)
DZero ohms at all frequencies
Answer & Solution
Correct answer: A. R only (XL = XC, reactances cancel)
At resonance ω₀ = 1/√(LC), XL = XC so jωL + 1/(jωC) = 0. Net impedance is purely resistive R. Current is maximum, in phase with voltage.
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