As frequency is varied in an RLC series circuit, resonance is reached when A) the voltages V_R, V_L and V_C all become equal. B) the voltages V_L and V_C become zero. C) the voltage V_R becomes equal to the source voltage. D) None of the choices are correct.

Question

Quizplus · Accepted Answer

At resonance in an RLC series circuit, the inductive reactance (XL) and capacitive reactance (XC) cancel each other out, making the total impedance purely resistive. This means the voltage across the resistor (VR) becomes equal to the source voltage, as the voltages across the inductor (VL) and capacitor (VC) effectively cancel each other out.

As Frequency Is Varied in an RLC Series Circuit, Resonance