Question

Magnetic field at a point of axis of circular coil

Answer 1

Heya mate..

The Magnetic Field along the Axis of a Circular Loop. ... Each point on the axis is unique, because the magnetic field changes magnitude as we get further from the center of the loop, so there's no easy way to apply Ampere's Law....

Answer 2

Answer:

Magnetic field at the axis of the circular current carrying coil. Here both dBcosθ and dB'cosθ are equal in magnitude and opposite in direction. So they cancle each other. Similarly, the components dBsinθ and dB'sinθ are equal in magnitude and in same direction so they adds up.