A horizontal circular wire loop of radius 0.6 m lies in a plane perpendicular to a uniform magnetic field pointing from above into the plane of the...

A horizontal circular wire loop of radius 0.6 m

lies in a plane perpendicular to a uniform

magnetic field pointing from above into the

plane of the loop, has a magnitude of 0.19 T.

If in 0.07 s the wire is reshaped from a circle

into a square, but remains in the same plane,

what is the magnitude of the average induced

emf in the wire during this time?