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. Work of 3.0×10⁻⁴ joule is required to be done in increasing the size of a soap film
  2. Under constant pressure, graph between P and 1/V is a
  3. From a disc of radius R, a concentric circular portion of radius r is cut-out so
  4. The atomic number of the most common element in nuclear fusion is
  5. In Young’s double slit experiment, for which colour the fringe width is the least