Basic Qualification · B-004 Circuit components · B-004-002-009
Which property of a semiconductor diode permits its use for reverse-polarity protection?
- A It has high forward resistance
- B It conducts in one direction only
- C It has a high response speed
- D voltage
Correct answer: B — It conducts in one direction only. From the official ISED question bank, verified word for word.
Why
A semiconductor diode acts like a one-way valve for electricity, allowing current to flow easily in one direction while blocking it completely in the other. The full explanation — and one for every question — is in Pro.
Practise this section
The parts inside the box: resistors, capacitors, inductors, diodes, transistors, tubes and what each does in a circuit.