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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is drift current?
💡 Hint: Think of how cars move on a highway when there's a push.
Question 2
Easy
What causes diffusion current?
💡 Hint: It’s like a crowd dispersing from a packed party.
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 is the primary cause of drift current?
- Concentration gradient
- Electric field
- Temperature
💡 Hint: Recall what propels charge carriers in a semiconductor.
Question 2
True or False: Diffusion current occurs due to electric fields.
- True
- False
💡 Hint: Think about what makes charge carriers move.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a semiconductor has a drift current of 5 mA due to an electric field of 10 V/m and a mobility of 1500 cm²/(V·s), calculate the carrier concentration (n).
💡 Hint: Remember to convert units consistently.
Question 2
A semiconductor reaches equilibrium with both drift and diffusion currents. If the drift current is 3 mA and the diffusion current is 2 mA, what is the net current?
💡 Hint: If currents are in the opposite direction, remember to subtract.
Challenge and get performance evaluation