Question

What is quality factor and its SI unit?

Answer 1

Answer:

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Explanation:

Quality factor of resonance is a dimensionless parameter that describes how underdamped an oscillator or resonator is, and characterizes a resonator bandwidth relative to its center frequency.

At resonance, XC=XL ⟹wo=LC1

∴ Quality factor in series LCR circuit Q=RwoL=R1CL

As quality factor is dimensionless, thus it has no SI unit.