Physics - emf electric magnetic generator?

Magnetic Power Generator Scam or The Real Deal: question RaviP : Physics - emf electric magnetic generator An electric generator consists of turns of a wire in a rectangular loop a = 0.05 m by 0.03 m b = arranged entirely in a uniform magnetic field Bo to the size of = 2.5 T formed. What is the maximum value of the electromotive force is generated when the loop w = 1000 rev / min on an axis perpendicular to B? Answer will probably be about 196, but I do not understand how it bekommt.ja 500

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