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A varying current in a coil changes from 10A to zero in 0.5 sec. If the average e.m.f induced in the coil is 220V,

A varying current in a coil changes from 10A to zero in 0.5 sec. If the average e.m.f induced in the coil is 220V, the self-inductance of the coil is (a) 5 H (c) 11 H (b) 6 H (d) 12 H

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