Hi everybody, i have got a question,any help will be much appreciated(adsbygoogle = window.adsbygoogle || []).push({});

A ferrite ring core has a slot cut in it such that the plane of the slot contains the axis of the toroid. It is wound with 26 turns.

i have attached the picture of the this problem.

Relative permeability = 680

Bsat = 0.38T

Ignoring leakage and fringing:

What is the inductance of the coil?

At what current does the ferrite saturate

the equation i'm using is N^2/((lair/MoMr*Aair)+(l iron/MoMr*Airon))

l air is 0.0003m

Aair = Airon= 1.22518E-3 i calculated this one

i'm not sure for liron shoud i use 0.0039*pi and substruct from lair. but still i dont get the right answer.

the right answer should be is L=0.000139 H and I=5.5796 A

for the current still don't get the answer right. i'm using B/MoMr=H and then H=NI/2Pi*r

please.any help will be much appreciated.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Find the inductance and a current of a coil

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**