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A wheel with N spokes is rotated in a pl...

A wheel with N spokes is rotated in a plane - perpendicular to the magnetic field B such emf e is induced between axie and rim of the wheel . In the same wheel number of spokes is made 3 N and the wheel is rotated in the same manner in the same field then new emf is ________ .

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e Changing number of spokes does not change the area swept per second.
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