1.8 - Mass Action Law
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Practice Questions
Test your understanding with targeted questions
What does the Mass Action Law state about intrinsic semiconductors?
💡 Hint: Think about how the charge carriers interact in an intrinsic semiconductor.
Define intrinsic carrier concentration.
💡 Hint: It’s a key characteristic of intrinsic semiconductors.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the mathematical expression of the Mass Action Law?
💡 Hint: Look for the equation relating n and p to ni.
True or False: The Mass Action Law only applies to n-type semiconductors.
💡 Hint: Remember that it relates to intrinsic conditions.
1 more question available
Challenge Problems
Push your limits with advanced challenges
An intrinsic semiconductor has an electron concentration of 2 × 10^10 cm⁻³ at room temperature. Calculate the hole concentration and explain your reasoning based on the Mass Action Law.
💡 Hint: Ensure you know how to rearrange the Mass Action Law equation.
Given that doping a semiconductor with phosphorus increases the electron concentration to 5 × 10^10 cm⁻³, calculate the new hole concentration if ni remains constant at 1 × 10¹⁰ cm⁻³.
💡 Hint: Use the Mass Action Law and remember how doping changes the distribution of carriers.
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