Transistor Function
Mediumphysics
A transistor can be used chiefly for?
Select the correct option:
Solution
Incorrect! Answer:
Amplification and switching
- Bipolar Junction Transistor (BJT): A three-terminal semiconductor device (Emitter, Base, Collector).
- Amplifier Mode: Operates in the active region where small changes in base current (Ib) result in large changes in collector current (Ic). This process increases the signal power.
- Switch Mode: Operates between cutoff (off) and saturation (on) regions. Used in digital circuits to represent binary states (0 and 1).
- Conclusion: These two functionalities (amplification and switching) form the foundation of modern electronics.
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About This Question
- Subject
- physics
- Chapter
- semiconductor devices
- Topic
- transistor function
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Amplification and switching
- Bipolar Junction Transistor (BJT): A three-terminal semiconductor device (Emitter, Base, Collector).
- Amplifier Mode: Operates in the active region where small changes in base current (Ib) result in large changes in collector current (Ic). This process increases the signal power.
- Switch Mode: Operates between cutoff (off) and saturation (on) regions. Used in digital circuits to represent binary states (0 and 1).
- Conclusion: These two functionalities (amplification and switching) form the foundation of modern electronics.
This medium difficulty physics question is from the chapter semiconductor devices, covering the topic of transistor function. It appeared in the 2025 exam.
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