A circular loop of radius 0.0157 m carries a current of 2.0 amp. The magnetic field at the centre of the loop is (m0 = 4p× 10'7 Wb/Am)

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A circular loop of radius 0.0157 m carries a current of 2.0 amp. The magnetic field at the centre of the loop is (m0 = 4p× 10'7 Wb/Am)