A magnetic field is uniform over a flat, horizontal circular region with a radius of 2.00 mm, and the field varies with time. Initially the field is zero and then changes to 1.50 T, pointing upward when viewed fromabove, perpendicular to the circular plane, in a time of 140 ms.(a) What is the average induced emf around the border of the circular region? (Enter the magnitude in µV and the direction as seen from above.)magnitudedirection---Select---v as seen from above(b) Immediately after this, in the next 70.0 ms, the magnetic field changes to a magnitude of 0.500 T, pointing downward when viewed from above. What is the average induced emf around the border of thecircular region over this time period? (Enter the magnitude in µV and the direction as seen from above.)magnitudedirection--Select---as seen from above

(a). The average induced emf around the border of the circular region is, ε=-AdBdt where A is the…

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