Question

In a scries $LCR$ resonance circuit, if we change the resistance only, from a lower to higher value :

• A. The bandwidth of resonance circuit will increase.
• B. The resonance frequency will increase.
• C. The quality factor will increase.
• D. The quality factor and the resonance frequency will remain constant.

Answer 1

Answer: (A)

Bandwidth $=R/L$

Bandwidth $\propto R$

So bandwidth will increase