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Two concentric coils of 20 turns each are situated in the same plane their radial are 0.2 m and 0.4 m and they carry 0.2 and 0.3 ampere current respectively in the same direction the magnetic field at the centre is

Answer» Two concentric coils of 20 turns each are situated in the same plane their radial are 0.2 m and 0.4 m and they carry 0.2 and 0.3 ampere current respectively in the same direction the magnetic field at the centre is


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