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Most Important Selected Qs for JEE AdvancedPhysicsElectrostatics

Paragraph: Three concentric spherical conductors A, B and C of radii R, 2 R and 4 R respectively. A and C is shorted and B is uniformly charged (charge +Q ) Question: Charge on conductor A is

Options

  1. AQ 4 ₀ R
  2. BQ 16 ₀ R
  3. C5 Q 48 ₀ R
  4. DNone of these

Correct answer

C. 5 Q 48 ₀ R

Step-by-step solution

aligned & q₁+q₂=0 & v_A= k q₁ R + k Q 2 R + k₂ 4 R & v_C= k q₁ 4 R + k Q 4 R + k₂ 4 R & v_A=v_C & q₁=-Q / 3 and q₂=Q / 3 aligned

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