Find magnetic field at $O$
Find magnetic field at $O$
- A
$\frac{{5{\mu _0}i\theta }}{{24\pi r}}$
- B
$\frac{{{\mu _0}i\theta }}{{24\pi r}}$
- C
$\frac{{11{\mu _0}i\theta }}{{24\pi r}}$
- D
Zero
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