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Multipole expansion of the electric potential

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Obtain an Approximate Electric Potential, Y (r), At a Large Distance, r >> a, From a Distribution Of Charges, Where the Multipole Expansion Of V (r) Includes Only the First Two Terms, the Monopole And the Dipole Term.

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Approximate electric potential of a given charge distribution has been found using the multipole expansion of the exact electric potential. This is a great sample question on Electricity and Magnetism.

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At very large distances, the multipole expansion of the electric ...

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