Amateur Extra › E5 Electrical Principles › E5A08
E5A08
What is the phase relationship between the current through and the voltage across a series resonant circuit at resonance?
Pick an answer to check it.
Answer: C. The voltage and current are in phase
At resonance the reactances cancel and the circuit acts like a pure resistance. In a resistance, voltage and current are in phase.
Tip: Resonance = pure resistance = in phase.