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KVPY2010PhysicsElectrostatics

A charge + q is placed somewhere inside the cavity of a thick conducting spherical shell of inner radius R ₁ and outer radius R ₂ . A charge - Q is placed at a distance r > R ₂ from the centre of the shell. Then the electric field in the hollow cavity-

Options

  1. Adepends on both + q and - Q
  2. Bis zero
  3. Cis only that due to - Q
  4. Dis only that due to + q .

Correct answer

D. is only that due to + q .

Step-by-step solution

For a conductor electric field inside its cavity is only due to inside charge and not due to outside charge.

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