In a physics laboratory experiment, a coil with 200 turns enclosing an area of 12 cm2 is rotated in 0.040 s from a position where its plane is perpendicular to the earth’s magnetic field to a position where its plane is parallel to the field. the earth’s magnetic field at the lab location is 6.0×10−5 t. (a) what is the magnetic flux through each turn of the coil before it is rotated? after it is rotated? (b) what is the average emf induced in the coil?
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