Answer: The average emf induced by the circular wedding ring is 0.0529v.
Explanation: Diameter of ring is 2.3cm = 0.023m
Area will be πD^2/4 = 0.0529π
Since magnetic field is perpendicular to the plane encircled by the ring, it means that emf generated since time and number of turns are not considered in the question will be 0.0529π/ (π/2) = 0.0529V.