e=-d/dt(magnetic flux)
= -Bd/dt(area in field)
dt/dt area in field = v*length perpendicular to motion (I do not have your figure to know if that is w or L)
A rectangular loop with sides l and w are inside of a region with constant magnetic field B is pulled to exit the region with velocity v.
a) find the magnitude of the net induced emf on the loop
b) find the direction of the current induced on the loop
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