The radius of a hollow metallic sphere is r. If the P.D. between its surface and a point at distance 3r from its center is V, then the intensity of electrical field at a distance of 3r from its center will be

Options :
  1. V/6r
  2. V/4r
  3. V/3r
  4. none of the above
Answer and Explanation :-

Answer: Option 1

Explanation:

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