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Two circular coils A and B of radius 5...

Two circular coils `A` and `B` of radius `5/sqrt2` cm and `5cm` carry currents `5A` and `5sqrt2A,` respectively. The plane of `B` is perpendilcular to plane of `A` and their centres coincide. Magnetic field at the centre is

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`sqrt(5)/(2sqrt(2)) 4 pi xx 10^(-5) T`
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AAKASH SERIES-ELECTROMAGNETICS-PROBLEMS (LEVEL -II)
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