General exam question G6B01
Subelement G6, CIRCUIT COMPONENTS· Group G6B
What determines the performance of a ferrite core at different frequencies?
- A.Its conductivity
- B.Its thickness
- C.The composition, or “mix,” of materials used (correct answer)
- D.The ratio of outer diameter to inner diameter
WhyThe composition, or mix, of materials used determines how a ferrite core performs at different frequencies. Ferrite cores are manufactured in different material formulations, or "mixes," each optimized for a particular frequency range and application, and it's that mix composition that determines how the core actually performs at a given frequency, answer C. Conductivity, physical thickness, and the outer-to-inner diameter ratio affect a core's size or handling but aren't what sets its frequency-dependent magnetic performance, so A, B, and D are wrong.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2023-2027 NCVEC Element 3 pool (public domain); the explanation above is original writing, see our methodology.
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