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What is the depletion region in a diode?

Practice Questions

Q1
What is the depletion region in a diode?
  1. The area where current flows
  2. The area with no charge carriers
  3. The area of maximum conductivity
  4. The area where voltage is applied

Questions & Step-by-Step Solutions

What is the depletion region in a diode?
  • Step 1: Understand that a diode is made of two types of materials: p-type and n-type.
  • Step 2: P-type material has extra holes (positive charge carriers), while n-type material has extra electrons (negative charge carriers).
  • Step 3: When p-type and n-type materials are joined, electrons from the n-type move to fill holes in the p-type.
  • Step 4: This movement of electrons creates a region around the junction where there are no free charge carriers.
  • Step 5: This area without free charge carriers is called the depletion region.
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