How to calculate the inductance (Henry) of a AWG 21 wire?

Thread Starter

electrogirl

Joined May 2, 2010
47
How to calculate the inductance (Henry) of a AWG 21 wire?

Given:
AWG 21 wire
Turns = 11
Diameter = 1 inch


I think this can be solved if only I knew the relative permeability of the of the core.
 

steveb

Joined Jul 3, 2008
2,436
How to calculate the inductance (Henry) of a AWG 21 wire?

Given:
AWG 21 wire
Turns = 11
Diameter = 1 inch


I think this can be solved if only I knew the relative permeability of the of the core.
Here is a formula and inductance calculator. Note that relative permeability is 1 because your conductor is likely copper or aluminum which are not significantly magnetic materials.

http://www.consultrsr.com/resources/eis/induct5.htm

Note, you can do a google search on "Inductance of a straight wire" and get more links. There may be some slight differences in the formulas, but you can try different variants to make sure you are getting a consistent answer.
 
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