Question

Magnetic field lines at the centre of the circular
current carrying coil are​

Answer 1

Answer:

Hence the magnetic field at the center of the circular coil is B=μ0i2r.

Answer 2

Answer:

At the centre of the circular loop, the magnetic field lines are straight.

Explanation:

At the centre of the circular loop, the magnetic field lines are straight. Each segment of circular loop carrying current produces magnetic field lines in the same direction with in the loop. The direction of magnetic field at the centre of circular coil is perpendicular to the place of the coil.