Home
Back
Inductor Voltage Formula:
| From: | To: |
The inductor voltage formula calculates the voltage across an inductor in an AC circuit. It is derived from the fundamental relationship between voltage, frequency, inductance, and current in inductive circuits.
The calculator uses the inductor voltage formula:
Where:
Explanation: The formula calculates the voltage drop across an inductor in an AC circuit, where the voltage is proportional to the frequency of the AC signal, the inductance value, and the current flowing through the inductor.
Details: Accurate inductor voltage calculation is crucial for circuit design, power supply design, filter design, and understanding the behavior of inductive components in AC circuits.
Tips: Enter frequency in Hz, inductance in Henry, and current in Amperes. All values must be positive numbers greater than zero.
Q1: Why is the voltage proportional to frequency in inductors?
A: In inductors, the opposition to current flow (inductive reactance) increases with frequency, which results in higher voltage drop at higher frequencies.
Q2: Does this formula work for DC circuits?
A: No, this formula is specifically for AC circuits. In DC circuits, inductors behave like short circuits (zero voltage drop) once steady state is reached.
Q3: What is the phase relationship in inductor voltage?
A: In an ideal inductor, the voltage leads the current by 90 degrees in phase.
Q4: Are there limitations to this formula?
A: This formula assumes ideal inductor behavior and may need adjustment for real-world factors like resistance, core saturation, and temperature effects.
Q5: How does this relate to inductive reactance?
A: Inductive reactance (X_L = 2πfL) is the opposition to current flow, and voltage V = I × X_L, which is equivalent to the formula used here.