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  4. 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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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,

NEETNEET 2019Electromagnetic Induction

Solution:

$E = \frac{B \omega l^2}{2}$
$=\frac{0.1(10)(0.5)^2}{2} = 0.125\,v$