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In an LCR circuit, capacitance is changed from C to 2C. For the resonant frequency to remain unchanged, the inductance should be changed from L to
Options
(a) 4 L
(b) 2 L
(c) L/2
(d) L/4
Correct Answer:
L/2
Explanation:
At resonance ω = 1 / √(LC)
Since ω is constant,
Therefore, LC = L’C’ = L’ × 2C
⇒ L’ = L / 2
Related Questions: - A tuning fork frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A tuning fork frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second
- A n-p-n transistor is connected in common emitter configuration in a given amplifier.
- The slope of the graph showing the variation of potential difference V on X-axis
- Surface tension of water will be minimum at
- A heavy small sized sphere is suspended by a string of length l.The sphere rotates
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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