Basic Qualification · B-004 Circuit components · B-004-002-003
The primary purpose of a Zener diode is to:
- Aregulate or maintain a constant voltage
- Bprovide a voltage phase shift
- Cboost the power supply voltage
- Dprovide a path through which current can flow
Correct answer: A — regulate or maintain a constant voltage. From the official ISED question bank, verified word for word.
Why
A Zener diode is designed to hold a specific voltage steady even when the current flowing through it changes, making it ideal for regulating or maintaining a constant voltage in a circuit. The full explanation — and one for every question — is in Pro.
Practise this section
Circuit components is section B-004 of the Basic exam: The parts inside the box: resistors, capacitors, inductors, diodes, transistors, tubes and what each does in a circuit.
Drill B-004 — free, no account