The flexible loop in the figure below has a radius of 14.5 cm and is in a magnet
ID: 2278962 • Letter: T
Question
The flexible loop in the figure below has a radius of 14.5 cm and is in a magnetic field of strength 0.158 T.
The loop is grasped at points A and B and stretched until it closes. If it takes 0.190 s to close the loop, find the magnitude of the average induced emf in it during this time.
Explanation / Answer
avg induced emf = B.A / t = (0.158 x 3.14 x 14.5^2)/ 0.190 = 0.548