Faraday’s law of electromagnetic induction; Skills for analyzing processes involving...

Faraday’s law of electromagnetic induction; Skills for analyzing processes involving electromagnetic induction; Changing field magnitude and induced emf; Changing area and induced emf Stimulating the brain

In transcranial magnetic stimulation (TMS) an abrupt decrease in the electric current in a small coil placed on the scalp produces an abrupt decrease in the magnetic field inside the brain. Suppose the magnitude of the field changes from 0.80 T to 0 T in 0.080 s. Determine the induced emf around a small circle of brain tissue of radius 1.2 x 10^-3 m. The field is perpendicular to the surface area of the circle of brain tissue.