1.

Show mathematically that the potential at a point on the equatorial line of an electric dipole is zero.

Answer»

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Solution :Consider a point P situated on the equatorial line of the electric dipole at a distance r from mid-point of dipole.
Now electric potential at P is GIVEN by
`V = V_A + V_B = (-Q)/ (4 pi epsi_0 sqrt(r^2 + a^2)) + q/(4PI epsi_0 sqrt(r^2 + a^2)) = 0` .
hus, potential at any point on equatorial line of an electric -9. dipole is ZERO irrespective of the position of that point.


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