The self-inductance $(L)$ produced by a solenoid of length '$l$' having '$N$' number of turns and cross-sectional area '$A$' is given by the formula (where $\phi$ = magnetic flux,$\mu_0$ = permeability of vacuum).
- A$L=N \phi$
- B$L=\mu_0 NA l$
- C$L=\frac{\mu_0 N^2 A}{l}$
- D$L=\frac{\mu_0 NA}{l}$
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