題組內容

11. (8 %) Assume a uniformly wound solenoid having N turns and length ℓ, and ℓ is much greater than the radius of the solenoid, prove: (a) the flux through each turn of area A is Φ_B = μ_B NIA / ℓ, and (b) the inductance is L = μ_B N² A / ℓ. Your proofs for(a):      (11a)     (4%) and for (b)      (11b)      (4%)

(b)