The expression for magnetic induction inside a solenoid of length `L` carrying a current `I` and having `N` number of turns is

Using Ampere's circuital law, obtain an expression for the magnetic field along the axis of a current carrying solenoid of length l and having N number of turns.

Using Ampere's circuital law, obtain an expression for the magnetic field along the axis of a current carrying solenoid of lenth l and having N number of turns.

(a) Define self inductance. Write its S.I. units (b) Derive and expression for self inductance of a long solenoid of length l cross-sectional area A having N number of turns.

Define self-inductance and give its SI unit. Derive an expression for self-inductance of a long, air cored solenoid of length l, radius r and having N number of turns.