Question

Two parallel Co-axial Coils of equal radius R and numbers of
turn N carrying equal currents 1 in same direction are separated by a
distance R. Show that the magnetic field intensity B on the axis around
the mid point between the coils is uniform over a very small distance
as compared to R and is given by - B=(4/5)³/² uIN/R​

Answer 1

Explanation:

the mid point between the coils in uniform over avery small distance