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RLC Circuits and Resonance - Technical MCQs

Q1:

If the bandwidth of a filter increases:

A Q decreases

B the roll-off rate increases

C the half-power frequency decreases

D the center frequency decreases

ANS:A - Q decreases

 the formula is,

BW = fr/q.

So BW is inversely proportional to 'q'.

Then obviously if BW increases q decreases.