The ratio of the magnetic flux to the current is called the inductance. Here we can calculate Inductance for Flat Spiral Air Core Coil.
Formula:
L=r^{2}N^{2}/(2r+2.8d)*10^{5
}
where,
L = Inductance,
r = Coil Mean Radius,
N = Wire Coil Number of Turns,
d = Coil Depth.
