Advanced Qualification · A-002 Advanced components and circuits · A-002-001-008
An element which is sometimes an insulator and sometimes a conductor is called a:
- AN-type conductor
- BP-type conductor
- Csemiconductor
- Dintrinsic conductor
Correct answer: C — semiconductor. From the official ISED question bank, verified word for word.
Why
A semiconductor is a material like silicon that acts as an insulator under some conditions but allows electricity to flow like a conductor under others, depending on factors such as temperature or added impurities. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits is section A-002 of the Advanced exam: Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.
Drill A-002 — free, no account