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A current carrying ring with its center ...

A current carrying ring with its center at origin and moment of inertia `2xx10^(-2)kg-m^(2)` about an axis passing through its centre and perpendicular to its plane has magnetic moment `M=(3hati-4hatj)` `A-m^(2)`. At time t=0 a magnetic field `B=(4hati+3hatj)` T is switched on.
Maximum angular velocity of the ring in `rad//s` will be

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