G6B01:What determines the performance of a ferrite core at different frequencies?
Direct answer summary (2023-2027 NCVEC pool)
The official correct answer for G6B01 is The composition, or “mix,” of materials used.
The key fact is The composition, or “mix,” of materials used. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.