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A positive charge +q is placed at the centre of a hollow metallic sphere of inner radius a and outer radius b . The electric field at a distance r from the centre is denoted by E . In this regard, which one of the following statements is correct?

Options

  1. AE =0 for a r b
  2. BE =0 for r a
  3. CE = q / 4 ₀ r for a r b
  4. DE = q / 4 ₀ a for r a

Correct answer

A. E =0 for a r b

Step-by-step solution

E =0 for a r b

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