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Which of the following is true for the active region of an npn transistor?
- a)The collector current is directly proportional to the base current
- b)The potential difference between the emitter and the collector is less than 0.4 V
- c)All of the mentioned
- d)None of the mentioned
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Which of the following is true for the active region of an npn transis...
The base current and the collector current are directly proportional to each other and the potential difference between the collector and the base is always less than 0.4 V.
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Which of the following is true for the active region of an npn transis...
Active Region of an NPN Transistor
The active region of an NPN transistor is the region in which it operates as an amplifier. In this region, the transistor is biased such that the base-emitter junction is forward biased and the collector-base junction is reverse biased.
Collector Current and Base Current
In the active region, the collector current is directly proportional to the base current. This means that as the base current increases, the collector current also increases. The ratio of the collector current to the base current is known as the current gain or beta (β) of the transistor.
Emitter-Collector Potential Difference
In the active region, the potential difference between the emitter and the collector is greater than 0.4 V. This is because the collector-base junction is reverse biased, which causes a depletion region to form. The potential difference between the emitter and the collector is the sum of the potential drops across the base-emitter and collector-base junctions.
Conclusion
Therefore, the correct option is (c) All of the mentioned, as both statements about collector current and emitter-collector potential difference are true for the active region of an NPN transistor.
The active region of an NPN transistor is the region in which it operates as an amplifier. In this region, the transistor is biased such that the base-emitter junction is forward biased and the collector-base junction is reverse biased.
Collector Current and Base Current
In the active region, the collector current is directly proportional to the base current. This means that as the base current increases, the collector current also increases. The ratio of the collector current to the base current is known as the current gain or beta (β) of the transistor.
Emitter-Collector Potential Difference
In the active region, the potential difference between the emitter and the collector is greater than 0.4 V. This is because the collector-base junction is reverse biased, which causes a depletion region to form. The potential difference between the emitter and the collector is the sum of the potential drops across the base-emitter and collector-base junctions.
Conclusion
Therefore, the correct option is (c) All of the mentioned, as both statements about collector current and emitter-collector potential difference are true for the active region of an NPN transistor.
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Which of the following is true for the active region of an npn transistor?a)The collector current is directly proportional to the base currentb)The potential difference between the emitter and the collector is less than 0.4 Vc)All of the mentionedd)None of the mentionedCorrect answer is option 'C'. Can you explain this answer?
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