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A wire 88 cm long bent into a circular l...

A wire 88 cm long bent into a circular loop is placed perpendicular to the magnetic field of flux density `2.5 Wb m^(-2)` . Whitin 0.5 sec, the loop is changed into a square of each side 22 am and flux density is increased to `3.0 Wb m^(-2)`. Calculate the value of e.m.f.induced.

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