A ring of radius R has uniformly distrib...

A ring of radius R has uniformly distributed charge. It spins about its axis with an angular velocity `omega`. P is a point on its axis at a distance x from its centre. The velocity of light in vecuum is c. The ratio of the magnetic field to the electric field at P is proportional to

A

`omega`

B

`R^(2)`

C

`1/x`

D

`(1)/(c^(2))`

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A, B, C, D

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