Extra exam question E6A02
Subelement E6, CIRCUIT COMPONENTS· Group E6A
Which of the following semiconductor materials contains excess free electrons?
- A.N-type (correct answer)
- B.P-type
- C.Bipolar
- D.Insulated gate
WhyN-type semiconductor material contains excess free electrons. N-type semiconductor material is doped so that it has excess free electrons available as charge carriers, the defining characteristic that gives it its name, answer A. P-type material instead has excess holes, bipolar describes a transistor structure using both carrier types together, and insulated gate describes a MOSFET construction technique, none of which describes what makes a material N-type.
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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