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JEE Main201912 Apr 2019Morning ShiftPhysicsElectrostaticsActual

A Point dipole p → = - p 0 x ^ is kept at the origin. The potential and electric field due to this dipole on the y - a x i s at a distance d are, respectively: (Taken V = 0 at infinity)

Options

  1. A| p → | 4 π ε 0 d 2 , - p → 4 π ε 0 d 3
  2. B0 , | p → | 4 π ε 0 d 3
  3. C| p → | 4 π ε 0 d 3 , p → 4 π ε 0 d 3
  4. D0 , - p → 4 π ε 0 d 3

Correct answer

D. 0 , - p → 4 π ε 0 d 3

Step-by-step solution

E → = - p → 4 π ε 0 r 3 = - p → 4 π ε 0 d 3 V = 0

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