. What is Q factor Write its expression and write


the conditions for its maximum value

Best Answer

Explanation:

The quality factor or ‘Q’ is a dimensionless quantity that describes the nature of damping in a resonating circuit.

It is indeed the ratio of maximum energy stored in the circuit to the energy dissipated during each cycle of oscillation.

In LCR Circuit, 

the ratio of resonance frequency to the difference of its neighbouring frequencies so that their corresponding current is 1/ 2 ​ times of the peak value, is called Q-factor of the circuit. 

Formula:​ ​ Q = 1/R√ L/C

Conditions for the large value of Q factor: 

(i) Value of L/C ​ should be large. 

(ii) Value of R should be less.

Final Answer:

The ratio of resonance frequency to the difference of its neighbouring frequencies so that their corresponding current is 1/ 2 ​ times of the peak value, is called Q-factor of the circuit. 

 

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