A ring of radius R, made of an insulatin...

A ring of radius `R`, made of an insulating material carries a charge `Q` uniformly distributed on it. If the ring rotates about the axis passing through its centre and normal to plane of the ring with constant angular speed `omega`, then the magnitude moment of the ring is

`QomegaR^(2)`

`1/2 Q omegaR^(2)`

`Q omega^(2)R`

`1/2 Q omega^(2)R`

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