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Q.

A cycle wheel of radius 0.5 m is rotated with constant angular velocity of 10 rad/s in a region of magnetic field of 0.1 T which is perpendicular to the plane of the wheel. The EMF generated between its centre and the rim is,

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a

Zero

b

0.25 V

c

0.125 V

d

0.5 V

answer is C.

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Detailed Solution

e=Bl2ω2 =12×0.1×122×10 =18 =0.125 V
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