Question: A ring of radius a = 50 mm made of thin wire of radius b = 1.0 mm was located in a uniform magnetic field

A ring of radius a = 50 mm made of thin wire of radius b = 1.0 mm was located in a uniform magnetic field with induction B = 0.50 mT so that the ring plane was perpendicular to the vector B. Then the ring was cooled down to a superconducting state, and the magnetic field was switched off. Find the ring current after that. Note that the inductance of a thin ring along which the surface current flows is equal to

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Hoa (In 2) 2).

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