Inductive charging is used to wirelessly charge electronicdevices ranging from toothbrushes to cell phones. Supposethe base unit of an inductive charger produces a 1.00 x10-3-T magnetic field. Varying this magnetic field magnitudechanges the flux through a 15.0-turn circular loop inthe device, creating an emf that charges its battery. Supposethe loop area is 3.00 x 10-4 m2 and the induced emf has anaverage magnitude of 5.00 V. Calculate the time requiredfor the magnetic field to decrease to zero from its maximumvalue.

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