1.

A disc of radius R uniformly charged with a charge Q is rotated at angular velocity ′ω′ about an axis passing through its center and perpendicular to plane disc. Net magnetic field at center of disc is.

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A disc of radius R uniformly charged with a charge Q is rotated at angular velocity ω about an axis passing through its center and perpendicular to plane disc. Net magnetic field at center of disc is.



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