Three solenoid coils of same dimension, same number of turns and same number of layers of windings are taken. Coil 1 with inductance L 1 was wound using a wire of resistance 
, coil 2 with inductance L 2 was wound using the similar wire but the direction of winding was reversed in each layer, coil 3 with inductance L 3 was wound using a superconducting wire. The self-inductance of the coils 
and L 3 are
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The self-inductance of a solenoid, 
,
where 
n 
S 
And l 
This depends on the geometry of the inductor such as cross-sectional area, length and number of turns and not on the material, even if it is made of a superconducting material.
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