Inductance of solenoid
$$L = \frac{\mu\cdot \mu0\cdot S\cdot N^{2}}{l}$$
L - inductance
μ - relative magnetic permeability
μ0 - magnetic constant
S - cross-sectional area
N - number of turns in a winding
l - length of solenoid
μ - relative magnetic permeability
μ0 - magnetic constant
S - cross-sectional area
N - number of turns in a winding
l - length of solenoid
Find
It is known that:
= 