Extra exam question E5D08
Subelement E5, ELECTRICAL PRINCIPLES· Group E5D
E5D08
What is the primary cause of loss in film capacitors at RF?
- A.Inductance
- B.Dielectric loss
- C.Self-discharge
- D.Skin effect (correct answer)
WhySkin effect is the primary cause of loss in film capacitors at RF. The primary source of loss in film capacitors at RF is skin effect in their metal leads and internal foil or metallized layers, which raises effective resistance as frequency increases, answer D. Dielectric loss, self-discharge, and inductance are all real but secondary considerations for a well-made film capacitor, skin effect is the dominant RF loss mechanism.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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