Question

In the given figure, the magnetic field at ‘$O$’.

• A. $\frac{3}{4}\frac{{\mu }_{o}I}{r}+\frac{{\mu }_{o}I}{4\pi r}$
• B. $\frac{3}{10}\frac{{\mu }_{o}I}{r}-\frac{{\mu }_{o}I}{4\pi r}$
• C. $\frac{3}{8}\frac{{\mu }_{o}I}{r}+\frac{{\mu }_{o}I}{4\pi r}$
• D. $\frac{3}{8}\frac{{\mu }_{o}I}{r}-\frac{{\mu }_{o}I}{4\pi r}$

Answer 1

Answer: (C)

$B_{\text{net }}=B_1+B_2+B_3$
$=\frac{3}{8}\frac{{\mu }_{0}I}{r}+\frac{{\mu }_{0}I}{4\pi r}+0$