A and \( \mathrm{B} \) are two concentric circular loop carrying cu...

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A and \( \mathrm{B} \) are two concentric circular loop carrying current i1 and i2 as shown in figure. If ratio of their radii is \( 1: 2 \) and ratio of the flux densities at the centre \( \mathrm{O} \) due to \( \mathrm{A} \) and \( \mathrm{B} \) is \( 1: 3 \) then the value of \( \frac{i_{1}}{i_{2}} \) will be
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