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NEET2018PhysicsAlternating CurrentActual

In a L-C circuit, angular frequency at resonance is . What will be the new angular frequency when inductor's inductance is made two times and capacitor's capacitance is made four times?

Options

  1. A2 2
  2. B2
  3. C2
  4. D2 2

Correct answer

A. 2 2

Step-by-step solution

Angular frequency at resonance, = 1 LC ...(i) According to question, when inductor's inductance is made 2 times and capacitance is 4 times, then ^ = 1 LC or ^ = ( 1 2 2 ) 1 LC = 2 2 [From Eq. (i)]

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