What is the effect of increasing bandwidth on Q factor, assuming main frequency constant?

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Multiple Choice

What is the effect of increasing bandwidth on Q factor, assuming main frequency constant?

Explanation:
Quality factor measures how selective or sharp a resonance is. For many resonators, Q = f0 / Δf, where f0 is the main (center) frequency and Δf is the bandwidth around it. If f0 stays the same and bandwidth Δf increases, the ratio f0/Δf gets smaller, so the Q factor decreases. In other words, a broader resonance is less selective and stores energy less efficiently per cycle. To increase Q, you’d need to narrow the bandwidth rather than widen it.

Quality factor measures how selective or sharp a resonance is. For many resonators, Q = f0 / Δf, where f0 is the main (center) frequency and Δf is the bandwidth around it. If f0 stays the same and bandwidth Δf increases, the ratio f0/Δf gets smaller, so the Q factor decreases. In other words, a broader resonance is less selective and stores energy less efficiently per cycle. To increase Q, you’d need to narrow the bandwidth rather than widen it.

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