Factors Affecting Coil Inductance There are several physical factors which affect the inductance of a coil. They include the number of turns in the coil, the diameter of the coil, the coil length, the type of material used in the core, and the number of layers of winding in the coils.

Similarly, you may ask, what affects the inductance of an inductor?

There are four basic factors of inductor construction determining the amount of inductance created. NUMBER OF WIRE WRAPS, OR “TURNS” IN THE COIL: All other factors being equal, a greater number of turns of wire in the coil results in greater inductance; fewer turns of wire in the coil results in less inductance.

## What is the symbol of inductance?

It is customary to use the symbol L for inductance, in honour of the physicist Heinrich Lenz. In the SI system, the measurement unit for inductance is the henry, with the unit symbol H, named in honor of Joseph Henry, who discovered inductance independently of, but not before, Faraday.

## How is inductance measured?

In either form, inductance is a ratio of voltage to current and is measured in a unit called the henry, defined as 1 volt-second per ampere. As the henry is a large unit, inductance is commonly measured in either millihenries (mH), thousandths of a henry, or microhenries (uH), millionths of a henry.