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A series resonant circuit has R = 10 Ω, L = 1 μH and C = 1 mF. If R is increased to 20 Ω the resonant frequency

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Question: A series resonant circuit has R = 10 Ω, L = 1 μH and C = 1 mF. If R is increased to 20 Ω the resonant frequency
[A].

increases

[B].

decreases

[C].

remains constant

[D].

may increases or decreases

Answer: Option C

Explanation:

fr depends only on L and C.