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A 120-turn coil is 90 mm in diameter and its plane is perpendicular to a 60-mT magnetic field generated by a nearby electromagnet. When the

A 120-turn coil is 90 mm in diameter and its plane is perpendicular to a 60-mT magnetic field generated by a nearby electromagnet. When the current of the electromagnet is interrupted and the field disappears, a fee of 6 V is induced in the coil. How long does it take for the field to disappear?


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