Find out magnetic field at point $O$ ?
Find out magnetic field at point $O$ ?
- A
$\pi\times {10^{ - 5}}\,T$
- B
$\pi\times {10^{ - 4}}\,T$
- C
$\pi\times {10^{ - 1}}\,T$
- D
${10^{ - 5}}\,T$
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- [KVPY 2015]
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