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ASVAB · Components and Devices

What does a diode do?

Correct answer

Allows current to flow in only one direction

  1. A Stores charge
  2. B Amplifies signals
  3. C Allows current to flow in only one direction
  4. D Measures resistance

Why this is the answer

A diode is a semiconductor device that allows current to flow in one direction only — it acts as a one-way valve for electrical current.
Source: ASVAB EI, Diodes

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