Three solenoid coils of same dimension, same number of turns and same number of layers of windings are taken. Coil 1 with inductance L was wound using a Mn wire of resistance 11Ω/m, coil 2 with inductance L was wound using the similar wire but the direction of winding was reversed in each layer; coil 3 with inductance L was wound using a superconducting wire. The self inductance of the coils L1,L2,L3 are - VgyanHub

Question:

Three solenoid coils of same dimension, same number of turns and same number of layers of windings are taken. Coil 1 with inductance L was wound using a Mn wire of resistance 11Ω/m, coil 2 with inductance L was wound using the similar wire but the direction of winding was reversed in each layer; coil 3 with inductance L was wound using a superconducting wire. The self inductance of the coils L1,L2,L3 are

Options :

(a) L1 = L2 = L3
(b) L1 = L2 ; L3 = 0
(c) L1 = L3 ; L2= 0
(d) L1 > L2 > L3

Answer :

(b) L1 = L2 ; L3 = 0

Answer Steps :

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