In physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how underdamped an oscillator or resonator is. Class-XII . 1.Phasor The representation of AC current and voltage by rotating vectors is calle^ phasor and the diagram representing these phasors is known as phasor diagram. Your email address will not be published. Candidates who are ambitious to qualify the Class 12 with good score can check this article for Notes. There can be more than one community in a society. Quality factor relates the maximum or peak energy stored in the circuit (the reactance) to the energy dissipated (the resistance) during each cycle of oscillation. Tests & Videos, you can search for the same too. The quality factor or Q-factor of a series resonant circuit is defined as the ratio of a voltage developed across the inductance or Capacitance at resonance to the impressed voltage, which is the voltage applied across R. 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Define quality factor (Q factor) of resonance and derive an expression for it. The Q, or quality, factor of a resonant circuit is a measure of the “goodness” or quality of a resonant circuit. Alternating Current . Your email address will not be published. Get CBSE class 12 Physics notes on Alternating Current Part 3. thumb_up Like (1) 0 L B R Q ω == (1.19) Therefore: A band pass filter becomes more selective (small B) … out Class 12 lecture & lessons summary in the same course for Class 12 Syllabus. What is Q factor? Quality factor of the LCR circuit. This document is highly rated by Class 12 students and has been viewed 106330 times. 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