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A transistor is used to make a common-base amplifier. If the transistor is npn and when it is biased in the active region, choose the correct option of the following.
- a)Emitter and collector are both forward biased
- b)Emitter is reverse biased and collector is forward biased
- c)Emitter is forward biased and collector is reverse biased
- d)Emitter and collector are both reverse biased
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
A transistor is used to make a common-base amplifier. If the transisto...
For an npn common base amplifier, emitter is always forward biased and collector is reverse biased.
The correct answer is: Emitter is forward biased and collector is reverse biased
The correct answer is: Emitter is forward biased and collector is reverse biased
Most Upvoted Answer
A transistor is used to make a common-base amplifier. If the transisto...
Transistor as a Common-Base Amplifier
When a transistor is biased in the active region, it can be used as a common-base amplifier. In this configuration, the base terminal is common to both the input and output circuits, and the emitter and collector terminals are connected to the input and output circuits, respectively.
Biasing in the Active Region
For an npn transistor biased in the active region, the base-emitter junction is forward biased, while the base-collector junction is reverse biased. This biasing arrangement allows the transistor to operate in its active mode, where it can amplify signals.
Options for the Biasing of Emitter and Collector
Let's analyze the given options:
- Option a) Emitter and collector are both forward biased: This is not the correct option because in the active region, the base-collector junction is reverse biased.
- Option b) Emitter is reverse biased and collector is forward biased: This is also not the correct option because in the active region, the base-emitter junction is forward biased.
- Option c) Emitter is forward biased and collector is reverse biased: This is the correct option. When the base-emitter junction is forward biased, it allows the transistor to conduct current and operate as an amplifier. At the same time, the reverse biasing of the base-collector junction allows the transistor to maintain its active mode.
- Option d) Emitter and collector are both reverse biased: This is not the correct option because both the base-emitter and base-collector junctions need to be biased in order for the transistor to operate in the active region.
Therefore, the correct option is c) Emitter is forward biased and collector is reverse biased.
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A transistor is used to make a common-base amplifier. If the transistor is npn and when it is biased in the active region, choose the correct option of the following.a)Emitter and collector are both forward biasedb)Emitter is reverse biased and collector is forward biasedc)Emitter is forward biased and collector is reverse biasedd)Emitter and collector are both reverse biasedCorrect answer is option 'C'. Can you explain this answer?
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A transistor is used to make a common-base amplifier. If the transistor is npn and when it is biased in the active region, choose the correct option of the following.a)Emitter and collector are both forward biasedb)Emitter is reverse biased and collector is forward biasedc)Emitter is forward biased and collector is reverse biasedd)Emitter and collector are both reverse biasedCorrect answer is option 'C'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about A transistor is used to make a common-base amplifier. If the transistor is npn and when it is biased in the active region, choose the correct option of the following.a)Emitter and collector are both forward biasedb)Emitter is reverse biased and collector is forward biasedc)Emitter is forward biased and collector is reverse biasedd)Emitter and collector are both reverse biasedCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A transistor is used to make a common-base amplifier. If the transistor is npn and when it is biased in the active region, choose the correct option of the following.a)Emitter and collector are both forward biasedb)Emitter is reverse biased and collector is forward biasedc)Emitter is forward biased and collector is reverse biasedd)Emitter and collector are both reverse biasedCorrect answer is option 'C'. Can you explain this answer?.
A transistor is used to make a common-base amplifier. If the transistor is npn and when it is biased in the active region, choose the correct option of the following.a)Emitter and collector are both forward biasedb)Emitter is reverse biased and collector is forward biasedc)Emitter is forward biased and collector is reverse biasedd)Emitter and collector are both reverse biasedCorrect answer is option 'C'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about A transistor is used to make a common-base amplifier. If the transistor is npn and when it is biased in the active region, choose the correct option of the following.a)Emitter and collector are both forward biasedb)Emitter is reverse biased and collector is forward biasedc)Emitter is forward biased and collector is reverse biasedd)Emitter and collector are both reverse biasedCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A transistor is used to make a common-base amplifier. If the transistor is npn and when it is biased in the active region, choose the correct option of the following.a)Emitter and collector are both forward biasedb)Emitter is reverse biased and collector is forward biasedc)Emitter is forward biased and collector is reverse biasedd)Emitter and collector are both reverse biasedCorrect answer is option 'C'. Can you explain this answer?.
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