Series resonance can only occur in a __________ a.c. circuit.
A) purely resistive
B) resistive-inductive
C) resistive-capacitive
D) resistive-inductive-capacitive

Question

Quizplus · Accepted Answer

Series resonance occurs when the inductive reactance (XL) is equal to the capacitive reactance (XC) in a circuit. This can only occur in a circuit that has both inductance and capacitance, hence the correct choice is a resistive-inductive-capacitive circuit (D). In a purely resistive circuit (A), there is no inductance or capacitance, so resonance is not possible. In a resistive-inductive circuit (B), the reactance of the inductor changes with frequency, making it difficult to achieve resonance. In a resistive-capacitive circuit (C), the reactance of the capacitor changes with frequency, making it difficult to achieve resonance.

Series Resonance Can Only Occur in a __________ A