Magnet field of a coil
The Magnet field along the axis of a coil.
Parameters
coil 1 radius
a
\(mm\)
coil 1 current
I
\(mA\)
coil 2 radius
x
\(mm\)
coil 2 height
z
\(mm\)
coil1 turn
`n_1`
\(\)
coil 2 turn
`n_2`
\(\)
Output
Magnet along axis `B_z`
`B_z={mu_0 a^2 I n_1}/{2(a^2+z^2)^(3/2)}`
Magnet at coil2 Bz
Magnet at coil 2 Br
Magnet Potential `A_phi`
Poloidal magnet flux `Psi`
`Psi=2 pi x A_phi`
Mutual Inductance `L_12`
`L_12=phi/I=oint A*dl=2 pi x A_phi`