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Problem 3 - Olympiad

A coil with area 0.4 m² and 100 turns is rotated from a position parallel to a 0.6 T magnetic field to perpendicular. If this takes 0.2 seconds, what is the maximum average induced EMF?

Correct: C

Maximum ΔΦ = NBA = 100*0.6*0.4 = 24 Wb. Average EMF = ΔΦ/Δt = 24/0.2 = 120 V.