The P-N Junction (Leaving Cert Physics): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What is a P-N junction?
What is a P-N junction?
Semiconductor with P-type one side, N-type other
What are the mobile charge carriers in P-type semiconductors?
What are the mobile charge carriers in P-type semiconductors?
Holes behaving as positive charge carriers
What are the mobile charge carriers in N-type semiconductors?
What are the mobile charge carriers in N-type semiconductors?
Electrons not involved in bonding
What is the depletion layer?
What is the depletion layer?
Region with no free majority charge carriers
Why does the N-type material stop losing electrons during P-N junction formation?
Why does the N-type material stop losing electrons during P-N junction formation?
It becomes positively charged
What is the junction voltage for silicon?
What is the junction voltage for silicon?
Approximately volts
How is a P-N junction forward-biased?
How is a P-N junction forward-biased?
Positive to P-type, negative to N-type
When does a forward-biased P-N junction conduct current?
When does a forward-biased P-N junction conduct current?
When voltage ≥ junction voltage
What happens to electron energy when electrons and holes recombine in forward bias?
What happens to electron energy when electrons and holes recombine in forward bias?
Appears as heat in the junction
How is a P-N junction reverse-biased?
How is a P-N junction reverse-biased?
Positive to N-type, negative to P-type
What happens to the depletion layer when a P-N junction is reverse-biased?
What happens to the depletion layer when a P-N junction is reverse-biased?
It becomes wider