1.

For L-C-R A.C. circuit resonance frequency is 5000 Hz and frequencies at half power points are 4950 Hz and 5050 Hz. The Q-factor is ……

Answer»

100
0.02
`50`
0.01

Solution :`Q=W_0/(DELTAW)=(2pif_0)/(2PI(f_2-f_1))`
`=f_0/(f_2-f_1)`
`=5000/(5050-4950)`
`=5000/100`
=50


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