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Question 20205
JEE Physics · Hard

Electromagnetic Induction and Alternating Current: Bandwidth of LCR Circuit MCQ

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Bandwidth of LCR CircuitHardQuestion 20205

Question

Bandwidth of a series LCR resonance circuit is:
  1. A
    ω₀/Q
  2. B
    Q/ω₀
  3. C
    ω₀Q
  4. D
    R/L
    Correct

Correct answer

R/L

Explanation

Bandwidth Δω = R/L = ω₀/Q. The bandwidth is the range of frequencies for which power is at least half the maximum (3 dB points). Higher Q → narrower bandwidth → more selective circuit.

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