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The ratio of magnetic field at the centre of current carrying coil of radius a and at distance a frim the centre of the coil and perpendicular to the axis of the coil is

Answer»

teps solutionsExplanation: Magnetic FIELD at centre is inversely PROPORTIONAL to the radius 'a' and the magnetic field at a DISTANCE is proportional to Where, r = Perpendicular distance from centre Now as r = a solving it GIVES 2√2



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