Basic Qualification · B-004 Circuit components · B-004-002-006
If alternating current is applied to the anode of a diode, what would you expect to see at the cathode?
- A No signal
- B Steady direct current
- C Pulsating alternating current
- D Pulsating direct current
Correct answer: D — Pulsating direct current. From the official ISED question bank, verified word for word.
Why
A diode acts like a one-way valve for electricity, allowing current to flow only from anode to cathode. 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.