Current through $ABC$ and $A'B'C'$ is $I$. What is the magentic field at $P$ ? $BP = PB' = r$ (Here $C'B'PBC$ are collinear)
Current through $ABC$ and $A'B'C'$ is $I$. What is the magentic field at $P$ ? $BP = PB' = r$ (Here $C'B'PBC$ are collinear)
- A
$\frac{1}{{4\pi }}\frac{{2I}}{r}$
- B
$\frac{{{\mu _0}}}{{4\pi }}\left( {\frac{{2I}}{r}} \right)$
- C
$\frac{{{\mu _0}}}{{4\pi }}\left( {\frac{{I}}{r}} \right)$
- D
zero
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