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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A circular coil of 100 turns and having a radius of 0.05 m carries a current of 0.1 A. Calculate the work required to turn the coil in an external field of 1.5 T through 180 about an axis perpendicular to the magnetic field?

A circular coil of 100 turns and having a radius of 0.05 m carries a current of 0.1 A. Calculate the work required to turn the coil in an external field of 1.5 T through 180 about an axis perpendicular to the magnetic field?

so that the plane of the wire coil contains the long central axis of the cylinder. The figure shows a wood cylinder of mass m and length L with N turns of wire wrapped around it longitudinally