A and B are two concentric circular cond...

A and B are two concentric circular conductors of centre O and carrying currents `i_(1)andi_(2)` as shown in the figure. The ratio of their radii is `1:2` and ratio of the flux densities at O due to A and B is `1:3`. The value of `i_(1)//i_(2)` will be :

`1/6`

`1/4`

`1/3`

`1/2`

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