A homogeneous non conducting disc of radius R carries uniform surface charge density o The disc is rotating about an axis

Question

A homogeneous non conducting disc of radius R carries uniform surface charge density o The disc is rotating about an axis through its centre of mass and perpendicular to the plane with constant angular velocity The magnetic dipole moment is 1 3 TORA W 4 GR W 2 4 TORA W 2 TOR W 4

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