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A power BJT is used as a power control switch by biasing it in the cut off region (off state) or in the saturation region (on state). In the on state
  • a)
    both the base-emitter & base-collector junctions are forward biased
  • b)
    the base-emitter junction is reverse biased, and the base collector junction is forward biased
  • c)
    the base-emitter junction is forward biased, and the base collector junction is reversed biased
  • d)
    both the base-collector & the base-emitter junctions are reversed biased
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A power BJT is used as a power control switch by biasing it in the cut...
When base-emitter & base-collector junctions are forward biased only than both the p-n junctions are forward biased and the device is on.
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Community Answer
A power BJT is used as a power control switch by biasing it in the cut...
Explanation:

Forward biased junctions in on state:
- When a power BJT is biased in the saturation region (on state), both the base-emitter and base-collector junctions are forward biased.
- The base-emitter junction is forward biased as the base is driven positive with respect to the emitter, allowing the flow of majority charge carriers (electrons in NPN and holes in PNP).
- The base-collector junction is also forward biased as the collector is more positive than the base, facilitating the movement of charge carriers from the base to the collector.
Therefore, in the on state of a power BJT, both the base-emitter and base-collector junctions are forward biased allowing the transistor to conduct and act as a power control switch.
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A power BJT is used as a power control switch by biasing it in the cut off region (off state) or in the saturation region (on state). In the on statea)both the base-emitter & base-collector junctions are forward biasedb)the base-emitter junction is reverse biased, and the base collector junction is forward biasedc)the base-emitter junction is forward biased, and the base collector junction is reversed biasedd)both the base-collector & the base-emitter junctions are reversed biasedCorrect answer is option 'A'. Can you explain this answer?
Question Description
A power BJT is used as a power control switch by biasing it in the cut off region (off state) or in the saturation region (on state). In the on statea)both the base-emitter & base-collector junctions are forward biasedb)the base-emitter junction is reverse biased, and the base collector junction is forward biasedc)the base-emitter junction is forward biased, and the base collector junction is reversed biasedd)both the base-collector & the base-emitter junctions are reversed biasedCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A power BJT is used as a power control switch by biasing it in the cut off region (off state) or in the saturation region (on state). In the on statea)both the base-emitter & base-collector junctions are forward biasedb)the base-emitter junction is reverse biased, and the base collector junction is forward biasedc)the base-emitter junction is forward biased, and the base collector junction is reversed biasedd)both the base-collector & the base-emitter junctions are reversed biasedCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A power BJT is used as a power control switch by biasing it in the cut off region (off state) or in the saturation region (on state). In the on statea)both the base-emitter & base-collector junctions are forward biasedb)the base-emitter junction is reverse biased, and the base collector junction is forward biasedc)the base-emitter junction is forward biased, and the base collector junction is reversed biasedd)both the base-collector & the base-emitter junctions are reversed biasedCorrect answer is option 'A'. Can you explain this answer?.
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