A 100-turn square wire coil of area 0.040 m2 rotates about a vertical axis at 1500 rev/min,

Question:

A 100-turn square wire coil of area 0.040 m2 rotates about a vertical axis at 1500 rev/min, as indicated in figure. The horizontal component of the Earth's magnetic field at the location of the loop is 2.0 x 10'5 T. Calculate the maximum emf induced in the coil by the Earth's field.