Advanced Qualification · A-002 Advanced components and circuits · A-002-002-001
What is the principal characteristic of a Zener diode?
- A An internal capacitance that varies with the applied voltage
- B A constant voltage under conditions of varying current
- C A constant current under conditions of varying voltage
- D A negative resistance region
Correct answer: B — A constant voltage under conditions of varying current. From the official ISED question bank, verified word for word.
Why
A Zener diode is designed to maintain a steady voltage across its terminals even when the current flowing through it changes significantly, making it ideal for voltage regulation. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.