Self-inductance of a long solenoid of length l, cross-section A, with …

Question

Self-inductance of a long solenoid of length l, cross-section A, with n turns per unit length is

Accepted Answer

B. L = μ₀ n² A l

B = μ₀nI inside; Φ_B per turn = μ₀nI·A
total linkage N Φ = (nl)(μ₀nIA) = μ₀n²AlI.
**So L = μ₀n²Al.**

Answer

L = μ₀ A / (n² l)

Answer

L = μ₀ n A / l

Answer

L = μ₀ n l / A

Self-inductance of a long solenoid of length l, cross-section A, with n turns per unit length is