# How do you find the resistance of an inductor?

## How do you find the resistance of an inductor?

The opposition of an inductor to a change in current is expressed as a type of AC resistance. I=VXL I = V X L , where V is the rms voltage across the inductor.

## What is the resistance of an inductor?

The resistance of an ideal inductor is zero. The reactance of an ideal inductor, and therefore its impedance, is positive for all frequency and inductance values. The effective impedance (absolute value) of an inductor is dependent of the frequency and for ideal inductors always increases with frequency.

**How do you calculate impedance from resistance and inductance?**

Z = [(Xc-XL)^2 + R]^0.5, where Z is the impedence, Xc is reactance of the capacitor which is equal to 1/(wC), w being the angular frequency and C being capacitance. XL is reactance of the coil which is equal to wL, L being the inductance of the coil, and R is resistance of the coil.

### How do you convert inductor to resistance?

To convert to Henries, you would divide the number of micro-Henries by 1,000,000. Calculate reactance, in ohms, by using the formula: Reactance = 2 * pi * Frequency * Inductance.

### Does inductor increase resistance?

In real life an inductor consists of a coil of wire (with or without a laminated iron core). So a real inductor has both resistance and inductance. If you double the inductance by increasing the length of wire on the coil, then the resistance will increase (roughly 1.4 times).

**Does an inductor create resistance?**

The effect of an inductor in a circuit is to oppose changes in current through it by developing a voltage across it proportional to the rate of change of the current. An ideal inductor would offer no resistance to a constant direct current; however, only superconducting inductors have truly zero electrical resistance.

## What is the resistance of an inductor called?

In other words, an inductors electrical resistance when used in an AC circuit is called Inductive Reactance. Inductive Reactance which is given the symbol XL, is the property in an AC circuit which opposes the change in the current.

Inductors have very low resistance for low-frequency signals, while displaying very high resistance for signals with high frequencies. The DCR of an inductor is normally very small, ranging from less than 1/100 of 1Ω to a few ohms (usually no greater than 4Ω).

## How to calculate appropriate inductor values?

Use the smallest core you can get away with. The losses go up with larger cores.

**What is the formula for an inductor?**

The formula which calculates the inductor current based on these input parameters is I= 1/L∫Vdt, where I is equal to the current flowing through the inductor, L is equal to the inductance of the inductor, and V is equal to the voltage across the inductor. Many times, you will see the extended formula, I= I0 + 1/L∫Vdt.