1. What is Inductive Reactance?

Inductive reactance (X_L) is the opposition that an inductor presents to alternating current. It increases with frequency and is measured in ohms (Ω).

2. How Does the Calculator Work?

The calculator uses the inductive reactance formula:

Where:

• \( X_L \) — Inductive reactance (Ω)
• \( f \) — Frequency of the AC signal (Hz)
• \( L \) — Inductance of the coil (H)
• \( \pi \) — Mathematical constant (~3.14159)

Explanation: The reactance increases linearly with both frequency and inductance. At DC (0 Hz), the reactance is zero.

3. Importance of Inductive Reactance

Details: Understanding inductive reactance is crucial for designing AC circuits, filters, and understanding how inductors behave in different frequency ranges.

4. Using the Calculator

Tips: Enter frequency in hertz (Hz) and inductance in henries (H). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What happens to reactance at DC (0 Hz)?
A: At DC, the reactance is zero as the inductor acts like a short circuit to steady current.

Q2: How does reactance change with frequency?
A: Reactance increases linearly with frequency - double the frequency means double the reactance.

Q3: What's the phase relationship in an inductor?
A: Current lags voltage by 90° in an ideal inductor.

Q4: Can reactance be negative?
A: No, reactance is always a positive quantity as it represents opposition to current flow.

Q5: How does this differ from capacitive reactance?
A: Capacitive reactance decreases with frequency (X_C = 1/(2πfC)) and current leads voltage by 90°.