a disc of radius R is rotated about an Axis perpendicular to its plane and passing through its Centre with an angular velocity w the surface charge density teta are at distance r from centre is given by teta equal to Alpha.r ,Where Alpha is a constant find magnetic dipole moment associated with disc
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A disc of radiusrotates at an angular velocityabout the axis perpendicular to its surface and passing through its centre. If the disc has a uniform surface charge density, find the magnetic induction on the axis of rotation at a distancefrom the centre.
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