Potential Due to an Electric Dipole

Physics

definition

Potential due to an electric dipole


where p is the dipole moment, r is the distance at which the potential V of the dipole is calculated and is the angle between the distance vector and the dipole.

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Important Questions

The electric potential at a point on the axis of an electric dipole depends on the distance of the point from the dipole as

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Draw the equipotential surfaces due to an electric dipole. Locate the points where the potential due to the dipole is zero.

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The electric potential at a point on the equatorial line of an electric dipole is

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A sphere encloses an electric dipole within it. The total flux across the sphere is

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If a point lies at a distance from the mid point of the dipole along its axis, the electric potential at this point is proportional to :

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An electric field of V/m is applied to an electric dipole at angle of . The value of electric dipole moment is C.m. What is the potential energy of the electric dipole?

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Figure shows a charge array known as an electric quadrupole. For a point on the axis of the quadrupole, obtain the dependence of potential on r for r/a >> 1, and contrast your results with that due to an electric dipole, and an electric monopole (i.e., a single charge).

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Potential due to an electric dipole is represented by:

(where is the dipole moment, is the distance at which the potential of the dipole is calculated and is the angle between the distance vector and the dipole.)

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The electric potential due to an electric dipole at a distance from the centre of the dipole and at an angle to the dipole axis is  ( is the dipole moment, is the length of the dipole) :

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The value of electric potential at any point due to any electric dipole is:-

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