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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Name an elemental semiconductor.
💡 Hint: Think of common materials used in electronics.
Question 2
Easy
What is the purpose of doping in semiconductors?
💡 Hint: Consider what happens when impurities are added.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What defines a semiconductor?
- A material that conducts electricity perfectly.
- A material that does not conduct electricity.
- A material with conductivity between that of insulators and conductors.
💡 Hint: Consider the range of conductivity.
Question 2
True or False: Doping a semiconductor always increases its resistivity.
- True
- False
💡 Hint: Think about the effect of impurities on conductivity.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A silicon piece is doped with phosphorus to create an n-type semiconductor. If the intrinsic carrier concentration is 10^10 cm^-3 and the doping concentration is 10^16 cm^-3, calculate the new electron concentration.
💡 Hint: Consider that in n-type doping, the number of electrons mostly comes from the dopants.
Question 2
A p-n junction diode is constructed with Si. Explain how the junction would behave under both forward and reverse bias conditions, providing the mechanisms behind the current flow.
💡 Hint: Think about the role of the electric field created in each condition.
Challenge and get performance evaluation