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## Homework Statement

The area of a 100 turn coil oriented with its plane perpendicular to a 0.28 T magnetic field is 4.3×10−2 m^2.

Find the average induced emf in this coil if the magnetic field reverses its direction in 0.36 s.

## Homework Equations

E = -N (flux - flux initial)/(t-to)

## The Attempt at a Solution

I'm actually not even sure I am using the correct equation. It is the only one I see that uses N. But I'm not sure how I would find an initial time and even a flux. Help?