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JEE Main202522 Jan 2025Evening ShiftPhysicsAlternating CurrentActual

A series LCR circuit is connected to an alternating source of emf E. The current amplitude at resonant frequency is I₀ . If the value of resistance R becomes twice of its initial value then amplitude of current at resonance will be

Options

  1. A2 I ₀
  2. BI₀
  3. CI ₀ 2
  4. DI ₀ 2

Correct answer

C. I ₀ 2

Step-by-step solution

Initially, I ₀= _ m R Finally, I ₀^1= _ m 2 R = I ₀ 2

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