A rectangular coil of 150 turns has dimensions of 23 x 70 cm and is located in a uniform 3 T magnetic field. In 1.2 s, the plane of the coil is rotated from a position where it makes an angle of 15° with the magnetic field to a position where it makes an angle of 72°. Calculate the average emf induced in the coil.
E = -N( Change in Flux/ change in time)
Flux = BAcos theta
The Attempt at a Solution
To find the change in flux, I set up the equation of Change of flux = BAcos72 -BAcos15. For this I got -.3172 T*m^2.
I plugged this into the first equation = -150 (-.3172/1.2) I got 39.66 N*m/C.