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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: - Two sources P and Q produce notes of frequency 660 Hz each.
- Which of the following is true for number of spectral lines in going from Lyman series
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two sources P and Q produce notes of frequency 660 Hz each.
- Which of the following is true for number of spectral lines in going from Lyman series
- Two waves represented by following equations are travelling in same medium
- The coefficient of mutual inductance of two coils is 6 mH. If the current flowing
- A body is thrown vertically up with a velocity u.It passes three points A,B and C
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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