- Permeability (μ): This is a measure of how easily a magnetic field can be established in a material. It depends on the type of core material used (e.g., air, iron, ferrite). The presence of a core material like iron increases inductance compared to air.
- Number of Turns (N): A longer coil decreases the inductance because the magnetic field is spread over a greater length.
- Cross-sectional Area (A): A larger area allows for a larger magnetic field, increasing the inductance.
- Length of the Coil (l): This refers to the total number of loops of the wire in the coil. More turns increase the inductance because each additional turn contributes to the magnetic field.