Having seen an online expert speaking very positively of Google Bard in solving ferrite cored inductor problems… so I tried it out.
Google Bard
Well, that is encouraging, seems a lift from datasheets and it seems ok at a glance.
Now lets go deeper.
Hmmm… the “impedance” is given that real number… but that is unlikely to be true. Experience says that example will have a complex impedance.
I declined clicking any ratings buttons!
Now a lot of hams might agree with the Bard, most even, blindly using Al to calculate inductance and then inductive reactance from that. I mean, there are even online calculators that do that.
Maybe Google Bard read toroids.info above?
The old way
Ok, let’s get relative permeability @ 7MHz (Google Bard does not mention that permeability of 43 mix is a function of frequency.)
Now lets calculate impedance of the core with a 2 turn winding at 7MHz.
… and the estimated impedance is 55.0+j78.9Ω.
Conclusion
Google Bard is not up to this relatively simple problem yet.