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What is the role of a diode in a rectifier circuit? (2022)

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Question: What is the role of a diode in a rectifier circuit? (2022)

Options:

  1. To amplify signals
  2. To store charge
  3. To allow current in one direction
  4. To increase voltage

Correct Answer: To allow current in one direction

Exam Year: 2022

Solution: 

In a rectifier circuit, a diode allows current to flow in one direction, converting AC to DC.

What is the role of a diode in a rectifier circuit? (2022)

Practice Questions

Q1
What is the role of a diode in a rectifier circuit? (2022)
  1. To amplify signals
  2. To store charge
  3. To allow current in one direction
  4. To increase voltage

Questions & Step-by-Step Solutions

What is the role of a diode in a rectifier circuit? (2022)
  • Step 1: Understand that a rectifier circuit is used to convert alternating current (AC) into direct current (DC).
  • Step 2: Know that a diode is a special electronic component that acts like a one-way valve for electricity.
  • Step 3: When AC current flows into the rectifier circuit, the diode only allows the positive part of the AC wave to pass through.
  • Step 4: The negative part of the AC wave is blocked by the diode, preventing it from flowing.
  • Step 5: As a result, the output of the rectifier circuit is a pulsed DC current, which is the desired outcome.
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