Question
Which of the following electronic components allows current to flow in only one direction?
Answer Options
- A) Resistor
- B) Fuse
- C) Diode
- D) Driven element
Correct Answer: C
Explanation
The fundamental function of a Diode is to act as a one-way electrical valve: it allows current to flow easily in one direction (called forward bias) but blocks current flow in the opposite direction (reverse bias).
This essential property makes diodes critical in power supplies for rectification (converting AC to pulsing DC - T6D01) and in low-power circuits for protecting sensitive components against reverse voltage damage.
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