1. What is Inductance?

Inductance is the property of an electrical conductor that opposes a change in current. It's measured in henries (H) and is a key parameter in inductor design and selection.

2. How Does the Calculator Work?

The calculator uses the inductance formula:

Where:

• \( L \) — Inductance in henries
• \( N \) — Number of turns in the coil
• \( \mu \) — Core permeability (H/m)
• \( A \) — Cross-sectional area of core (m²)
• \( l \) — Magnetic path length (m)

Explanation: The equation shows how inductance depends on the square of turns, core material properties, and physical dimensions.

3. Importance of Inductance Calculation

Details: Accurate inductance calculation is crucial for designing filters, power supplies, RF circuits, and other electronic systems where inductors are used.

4. Using the Calculator

Tips: Enter all required parameters with appropriate units. For air-core inductors, use μ₀ (4π×10⁻⁷ H/m) as permeability.

5. Frequently Asked Questions (FAQ)

Q1: What affects inductance the most?
A: Number of turns has the greatest effect since inductance is proportional to turns squared.

Q2: What are typical inductance values?
A: Values range from nanohenries (nH) for small RF coils to henries (H) for power applications.

Q3: How does core material affect inductance?
A: Materials with higher permeability (like ferrites) increase inductance compared to air cores.

Q4: What are common inductor applications?
A: Used in filters, transformers, chokes, energy storage, and tuned circuits.

Q5: How accurate is this calculation?
A: This provides theoretical value; actual inductance may vary due to factors like winding technique and core saturation.