Using Biot-Savart law, the field at point due to the current
element at is: = 3 From the figure, there is symmetry in the
problem the right segment has the sameparameters as the left
segment except for with a negative sign, so the contributionto the
field from the , axes cancel, and the field is completely in the y
direction.i.e.circumferential. Using Amperes law for a circle of
radius about the axes of thetoroid.2 = 0 0 , () = { 2 …