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The electrostatic potential due to an electric dipole at a distance r varies as :

Options

  1. Ar
  2. B1 r 2
  3. C1 r 3
  4. D1 r

Correct answer

B. 1 r 2

Step-by-step solution

The potential at a distance r due to a short dipole is V d i p r = 1 4 π ε ∘ p → · r ^ r 2 , where p → =dipole moment. Thus, V d i p ( r ) is proportional to 1 r 2 .

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