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Inductance measures a conductor's or coil's ability to generate a magnetic field and store energy magnetically. It quantifies the opposition to changing electrical current.
Formel
The calculator applies L = μ × N² × A / l where μ is permeability
- L
- μ × N² × A / l where μ is permeability — μ × N² × A / l where μ is permeability
- A
- A value — Variable used in the calculation
Trinn-for-trinn guide
- 1Input the number of turns, cross-sectional area, and coil length
- 2The calculator applies L = μ × N² × A / l where μ is permeability
- 3Results show inductance in henries
Løste eksempler
Inndata
N = 100 turns, A = 10 cm², l = 5 cm
Resultat
L ≈ 2.51 mH
Using air core coil
Vanlige feil å unngå
- ✕Neglecting to square the number of turns
- ✕Using inconsistent units for coil dimensions
Ofte stilte spørsmål
Why does inductance increase with the square of turns?
Each additional turn strengthens the magnetic field and increases flux linkage exponentially.
What's the difference between self and mutual inductance?
Self-inductance opposes current changes in the same circuit, while mutual inductance occurs when one coil induces voltage in another.
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