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Two concentric coils of 10 turns each are situated in the same plane. Their radii are 2cm & 4cm & they carry respectively ,0.2 & 0.3A current in opposite directions. The magnetic field (in Wb/m2) at centre is ?

Answer» Two concentric coils of 10 turns each are situated in the same plane. Their radii are 2cm & 4cm & they carry respectively ,0.2 & 0.3A current in opposite directions. The magnetic field (in Wb/m2) at centre is ?


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