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cse • paper_1 • electrodynamicscse-2023-subject-03-007

Line charge — UPSC CSE 2023 Physics PYQ

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A circular ring of radius R lying on the x-y plane and centred at the origin, carries a uniform line charge \lambda. Find the first three terms (monopole, dipole and quadrupole) of the multipole expansion of potential V(r, \theta).

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