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## Homework Statement

A closely wound rectangular coil of 95.0 turns has dimensions of 29.0 cm by 40.0 cm. The plane of the coil is rotated from a position where it makes an angle of 39.0 degrees with a magnetic field of 1.60 T to a position perpendicular to the field. The rotation takes 0.120 s.

What is the average emf induced in the coil?

## Homework Equations

## The Attempt at a Solution

ε=ΔB/Δt*(A*cos 39°)

ε=1.6/.120*(.116*cos39)

=1.20

This is the wrong answer!