Basic Qualification · B-004 Circuit components · B-004-002-010
In order for a diode to conduct, it must be:
- A reverse biased
- B forward biased
- C close coupled
- D enhanced
Correct answer: B — forward biased. From the official ISED question bank, verified word for word.
Why
A diode acts like a one-way valve for electricity, and it only opens to let current flow when you apply voltage in the direction that pushes electrons through it. 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.