#### wccheok

##### Member level 1

**How to count inductance?**

Hi, i hv found alot about the inductance calculation formula. But i cant found the formula i need. Any one who know how to calculate the inductance value by given the information like below?

L=9turn, 0.15mm wire, 4.5mm diameter coil

what are the inductance at above?

Thx for helping