如何计算Inductance
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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.
公式
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
分步指南
- 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
例题解析
输入
N = 100 turns, A = 10 cm², l = 5 cm
结果
L ≈ 2.51 mH
Using air core coil
常见错误注意事项
- ✕Neglecting to square the number of turns
- ✕Using inconsistent units for coil dimensions
常见问题
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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