NEED THIS ASAP PLEASE A 26turn circular coil of wire has dia

NEED THIS ASAP PLEASE!

A 26-turn circular coil of wire has diameter 1.07 m. It is placed with its axis along the direction of the Earth\'s magnetic field of 46.0 µT and then in 0.200 s is flipped 180°. An average emf of what magnitude is generated in the coil?

A 26-turn circular coil of wire has diameter 1.07 m. It is placed with its axis along the direction of the Earth\'s magnetic field of 46.0 T and then in 0.200 s is flipped 180°. An average emf of what magnitude is generated in the coil? mV

Solution

magnetic flux = (magnetic field) (area that magnetic field passes through)
= B A = BAcos

magnitude of induced emf = (number of coils)|rate of change of magnetic flux|
= N |d/dt|

Assuming that the rotational speed of the flipping coil is constant,
= N |/t|
= N |[BA - (-BA)]/t|
= 2NBA/t
= 2(26)(4.60e-5 T)[(1.07 m / 2)²]/(0.2002 s)
= 0.01074 V or 10.74 mV