In the given figure net magnetic field at $O$ will be
In the given figure net magnetic field at $O$ will be
- A
$\frac{{2{\mu _0}i}}{{3\pi a}}\sqrt {4 - {\pi ^2}} $
- B
$\frac{{{\mu _0}i}}{{3\pi a}}\sqrt {4 + {\pi ^2}} $
- C
$\frac{{2{\mu _0}i}}{{3\pi {a^2}}}\sqrt {4 + {\pi ^2}} $
- D
$\frac{{2{\mu _0}i}}{{3\pi a}}\sqrt {(4 - {\pi ^2})} $
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$\left[\text { Use } \mu_0=4 \pi \times 10^{-7} \mathrm{TmA}^{-1}\right]$
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- [JEE MAIN 2024]
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