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MHT CET20239 May 2023Morning ShiftPhysicsElectrostaticsActual

A solid metallic sphere has a charge +3 Q . Concentric with this sphere is a conducting spherical shell having charge - Q . The radius of the sphere is ' A ' and that of the spherical shell is ' B '. ( B > A ) . The electric field at a distance ' R ' ( A < R < B) from the centre is ( ₀= permittivity of vacuum)

Options

  1. AQ 2 ₀ R
  2. B3Q 2 ₀ R
  3. C3Q 4 ₀ R^2
  4. D4Q 2 ₀ R^2

Correct answer

C. 3Q 4 ₀ R^2

Step-by-step solution

aligned & Using E = 1 4 ₀ q r ^2 , we get & E = 1 4 ₀ (3 Q ) R ^2 aligned

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