# Flux Variation-EMF generation!

A magnetic field ($$B$$), uniform between two magnets can be determined by measuring the induced voltage in the loop as it is pulled through the gap at uniform speed $$20 m/sec$$. Size of magnet is $$2 cm × 1cm × 2cm$$ and size of coil $$4 cm × 6 cm$$ as shown in figure. The correct variation of induced emf with time is :

(Assume at t = 0, the coil enters the magnetic field)

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