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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
- 34 gram of water at 30⁰C is poured into a calorimeter at 15⁰C.
- A gramophone record is revolving with an angular velocity ?. A coin is placed at
- The transition from the state 3 n = 3 to n = 1 in a hydrogen like atom results
- Under the action of a force F=cx, the position of a body changes from 0 to x.The work done
- The charges Q, +q, and +q are placed at the vartices of an equilateral
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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