Practice n-type semiconductor - 14.4.1 | 14. SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS | CBSE 12 Physics Part 2
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14.4.1 - n-type semiconductor

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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is an n-type semiconductor?

💡 Hint: Think about the type of charge carriers.

Question 2

Easy

Name one common pentavalent dopant.

💡 Hint: Think about common elements in the fifth group of the periodic table.

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Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is an n-type semiconductor?

  • A semiconductor with fewer electrons than holes
  • A semiconductor with more holes than electrons
  • A semiconductor with more electrons than holes

💡 Hint: Remember that 'n' stands for negative.

Question 2

True or False: Doping increases the number of holes in an n-type semiconductor.

  • True
  • False

💡 Hint: Consider what happens when you add electrons.

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Challenge Problems

Push your limits with challenges.

Question 1

A sample of silicon is doped with arsenic at a concentration of 1 × 10^18 atoms/m^3. Calculate the number of conduction electrons assuming all dopant atoms contribute one free electron each.

💡 Hint: Use the relationship between dopant concentration and the number of free electrons.

Question 2

Explain how the presence of extra electrons in an n-type semiconductor changes its behavior when exposed to an electric field compared to an intrinsic semiconductor.

💡 Hint: Think about how the electric field influences movement of charge carriers differently.

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