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JEE Advanced2006PhysicsAlternating CurrentActual

Find the time constant for the given R C circuits in correct order. R₁=1 , R₂=2 , C₁=4 F , C₂=2 F

Options

  1. A18,4,8 / 9
  2. B18,8 / 9,4
  3. C4,18,8 / 9
  4. D4,8 / 9,18

Correct answer

B. 18,8 / 9,4

Step-by-step solution

aligned & =C R ₁ & = (C₁+C₂ ) (R₁+R₂ )=18 s ₂ & = ( C₁ C₂ C₁+C₂ ) ( R₁ R₂ R₁+R₂ )= 8 6 2 3 = 8 9 s ₂ & = (C₁+C₂ ) ( R₁ R₂ R₁+R₂ )=(6) ( 2 3 )=4 s aligned

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