# Why is an $RLC$ resonance curve asymmetric? [duplicate]

When I was measuring the current with varying frequency of an series RLC circuit, I noticed that the graph produced is asymmetric:

Is there any reason for this? (inductance=8.29mH) The Q-factor is 2.75 (3 s.f.)

• Are you asking about asymmetry about the resonant frequency? What was the Q of the system you were measuring? Could you reproduce the graph you obtained? – Floris Sep 4 '16 at 3:23
• Thanks for your response! Yes I am asking about the asymmetry. – Brian Lin Sep 4 '16 at 3:37
• Can you tell us how you are measuring things? If you are using an AC couples scope it is possible you are running into the low frequency cutoff. – Floris Sep 5 '16 at 4:14
• In light of the answer given in the duplicate it would be interesting if you plotted the log frequency curve and confirmed the explanation. – Floris Sep 5 '16 at 11:49