MCQ
A cell is connected between two points of a uniformly thick circular conductor. The magnetic field at the centre of the loop will be $($Here $i_1$ and $i_2$ are the currents flowing in the two parts of the circular conductor of radius $'a\ ’$ and $\mu_0$ has the usual meaning$)$
- ✓Zero
- B$\frac{\mu_0}{2 a}\left(i_1-i_2\right)$
- C$\frac{\mu_0}{2 a}\left(i_1+i_2\right)$
- D${\frac{\mu_0}{a}}\left(i_1+i_2\right)$
