Advanced Qualification · A-002 Advanced components and circuits · A-002-001-010

Substances such as silicon in a pure state are usually good:

1. A tuned circuits
2. B inductors
3. C insulators
4. D conductors

Correct answer: C — insulators. From the official ISED question bank, verified word for word.

Why

Pure silicon has very few free electrons to carry electric current, so it blocks electricity much like glass or rubber does, making it an insulator in its natural state. The full explanation — and one for every question — is in Pro.

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Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.

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