MCQ
A symmetric star conducting wire loop is carrying a steady state current $\mathrm{I}$ as shown in figure. The distance between the diametrically opposite vertices of the star is $4 a$. The magnitude of the magnetic field at the center of the loop is
- ✓$\frac{\mu_0 \mathrm{I}}{4 \pi \mathrm{a}} 6[\sqrt{3}-1]$
- B$\frac{\mu_0 \mathrm{I}}{4 \pi \mathrm{a}} 6[\sqrt{3}+1]$
- C$\frac{\mu_0 \mathrm{I}}{4 \pi \mathrm{a}} 3[\sqrt{3}-1]$
- D$\frac{\mu_0 \mathrm{I}}{4 \pi \mathrm{a}} 3[2-\sqrt{3}]$
