Answer Happy

A magnetic field is uniform over a flat, horizontal circular
region with a radius of 1.70 mm, and the field varies with time.
Initially the field is zero and then changes to 1.50 T, pointing
upward when viewed from above, perpendicular to the circular plane,
in a time of 110 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.)
magnitude µV direction
as seen from above
(b)
Immediately after this, in the next 60.0 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
the circular region over this time period? (Enter the magnitude in
µV and the direction as seen from above.)
magnitude µV direction
as seen from above