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In an LCR circuit capacitance is changed from C to 2 C . For the resonant frequency to remain unchanged, the inductance should be changed from L to

Options

  1. A4 ~L
  2. B2 ~L
  3. CL/2
  4. DL/4

Correct answer

C. L/2

Step-by-step solution

_ res = 1 L C if _ res is to remain same, the product LC should also not change. aligned & LC = L ^ C ^ & LC = L ^ 2 C & L ^ = L ^2 2 aligned

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