Two concentric coils each of radius equal to \( 2 \pi \mathrm{cm} \) are placed at right angles ...

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Two concentric coils each of radius equal to \( 2 \pi \mathrm{cm} \) are placed at right angles to each other. \( 3 \mathrm{~A} \) and \( 4 \mathrm{~A} \) are the current, flowing in each coil, respectively. The magnetic induction, in \( \mathrm{Wb} / \mathrm{m}^{2} \), at the centre of the coils will be \( \left(\mu_{0}=4 \pi \times 10^{-7} \mathrm{~Wb} / \mathrm{A} \cdot \mathrm{m}\right) \)
(A) \( 5 \times 10^{-5} \)
(B) \( 7 \times 10^{-5} \)
(C) \( 12 \times 10^{-5} \)
(D) \( 10^{-5} \)
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