What is the electrostatic potential due to an electric dipole at an equatorial line?
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The electrostatic potential due to an electric dipole at an equatorial line at any point of that line is always zero.
The potential on equatorial point due to charge of electric dipole is equal in magnitude but opposite in nature and hence the resultant is zero.
Positive and negative potentials cancel each other which is the reason behind the zero value.
Apart from its explanation by the derivation it can also be explained theoretically. When the charges move towards the equatorial line they always have a right angle all are always perpendicular to that lines so that the work done to bring those charges is always zero.
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