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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
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The interferance pattern is obtained with two coherent light sources of intensity
- In Young’s double silt experiment, 12 fringes are observed to be formed
- The binding energy of deutron is 2.2 MeV and that of ₂⁴He is 28 MeV.
- A transverse wave is represented by y = a sin (?t – kx)
- A particle executing simple harmonic motion of amplitude 5 cm has maximum
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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