Demonstrate that the potential of the field generated by a dipole with the electric moment p (Fig 3 4) may be represented as pr 40r3, where r is the radius vector Using this expression, find the magnitude of the electric field strength vector as a function of r ...

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Demonstrate that the potential of the field generated by a dipole with the electric moment p (Fig.

Question:

Demonstrate that the potential of the field generated by a dipole with the electric moment p (Fig. 3.4) may be represented as φ = pr/4πε0r3, where r is the radius vector.
Using this expression, find the magnitude of the electric field strength vector as a function of r