Calculate the inductance of an air-core coil with the following specifications: length 20 cm, #of turns 200 and diameter of core 2 cm.Could you show your work if you know how to do it? Thanks :)
L 0.001 N?r? / (228r + 254l) where L is the inductance in henrys, r is the coil radius in metres, l is the coil length in metres (0.8r) and N is the number of turns. This formula applies at 'low' frequencies. At frequencies high enough for skin effect to occur a correction of up to about -2% is made. Old school version in Imperal measurement is La?n?/(9a+10l) a and l are in inches/
