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(B) When a wire of irregular shape turns into a circular loop,the area of the loop increases.Since the magnetic field is directed into the paper,the m

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along $adcba$

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(B) When a wire of irregular shape turns into a circular loop,the area of the loop increases.Since the magnetic field is directed into the paper,the magnetic flux linked with the loop increases as the area increases.According to Lenz's law,the induced current will flow in a direction that opposes this increase in magnetic flux.To oppose the inward magnetic flux,the induced magnetic field must be directed out of the paper.Using the right-hand thumb rule,for the induced magnetic field to be directed out of the paper,the induced current must flow in the counter-clockwise direction,which is along $adcba$.

$A$ wire of irregular shape is turning into a circular shape in a magnetic field which is directed into the paper. The direction of the induced current is

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