Navigate

In an LCR circuit, capacitance is changed from C to 2C. For the resonant frequency

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

AIEEE2004
admin:

Related Questions

  1. Which of the following are mechanical waves?
  2. What is the value of incidence L for which the current is maximum in a series LCR
  3. An α-particle of energy 5 MeV is scattered through 180⁰ by a fixed uranium nucleus.
  4. Two nuclei are said to be mirror nuclei of
  5. A radio isotope X with a half life 1.4 x 10⁹ years decays to Y which is stable