Class 12 Exam > Class 12 Questions > In an n-p-n transistor, the emitter current i...
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In an n-p-n transistor, the emitter current is
- a)equal to base current
- b)slightly less than the collector current
- c)slightly more than the collector current
- d)equal to the collector current
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
In an n-p-n transistor, the emitter current isa)equal to base currentb...
In the transistor circuit, the current flows from emitter to collector via base.
Ie=Ib+Ic where variables have their usual meanings.
Hence, emitter current is slightly more than the collector current.
Ie=Ib+Ic where variables have their usual meanings.
Hence, emitter current is slightly more than the collector current.
Most Upvoted Answer
In an n-p-n transistor, the emitter current isa)equal to base currentb...
Understanding Emitter, Base, and Collector Currents in NPN Transistors
In an n-p-n transistor, it's essential to grasp the relationship between the emitter, base, and collector currents.
Current Relationships
- Emitter Current (Ie): This is the total current flowing out of the emitter. It is the sum of the base current (Ib) and the collector current (Ic).
- Base Current (Ib): This is the small current entering the base terminal. It is responsible for controlling the larger currents in the emitter and collector.
- Collector Current (Ic): This is the current flowing out of the collector. In a well-functioning transistor, this current is significantly larger than the base current.
Current Relationships Explained
- The relation can be expressed as:
Ie = Ic + Ib
- Since the base current is very small compared to both the collector and emitter currents, it can be inferred that:
Ic ≈ Ie
- However, because there is always some base current flowing, the emitter current will be slightly more than the collector current.
Conclusion
Thus, in an n-p-n transistor, the emitter current is indeed slightly more than the collector current. This is due to the presence of the base current, which is necessary for the transistor to operate effectively. Therefore, the correct answer is option 'C': the emitter current is slightly more than the collector current.
In an n-p-n transistor, it's essential to grasp the relationship between the emitter, base, and collector currents.
Current Relationships
- Emitter Current (Ie): This is the total current flowing out of the emitter. It is the sum of the base current (Ib) and the collector current (Ic).
- Base Current (Ib): This is the small current entering the base terminal. It is responsible for controlling the larger currents in the emitter and collector.
- Collector Current (Ic): This is the current flowing out of the collector. In a well-functioning transistor, this current is significantly larger than the base current.
Current Relationships Explained
- The relation can be expressed as:
Ie = Ic + Ib
- Since the base current is very small compared to both the collector and emitter currents, it can be inferred that:
Ic ≈ Ie
- However, because there is always some base current flowing, the emitter current will be slightly more than the collector current.
Conclusion
Thus, in an n-p-n transistor, the emitter current is indeed slightly more than the collector current. This is due to the presence of the base current, which is necessary for the transistor to operate effectively. Therefore, the correct answer is option 'C': the emitter current is slightly more than the collector current.
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Community Answer
In an n-p-n transistor, the emitter current isa)equal to base currentb...
NPN Transistor it is the movement of negative current carriers (electrons) through the Base region that constitutes transistor action, since these mobile electrons provide the link between the Collector and Emitter circuits.
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In an n-p-n transistor, the emitter current isa)equal to base currentb)slightly less than the collector currentc)slightly more than the collector currentd)equal to the collector currentCorrect answer is option 'C'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about In an n-p-n transistor, the emitter current isa)equal to base currentb)slightly less than the collector currentc)slightly more than the collector currentd)equal to the collector currentCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In an n-p-n transistor, the emitter current isa)equal to base currentb)slightly less than the collector currentc)slightly more than the collector currentd)equal to the collector currentCorrect answer is option 'C'. Can you explain this answer?.
In an n-p-n transistor, the emitter current isa)equal to base currentb)slightly less than the collector currentc)slightly more than the collector currentd)equal to the collector currentCorrect answer is option 'C'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about In an n-p-n transistor, the emitter current isa)equal to base currentb)slightly less than the collector currentc)slightly more than the collector currentd)equal to the collector currentCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In an n-p-n transistor, the emitter current isa)equal to base currentb)slightly less than the collector currentc)slightly more than the collector currentd)equal to the collector currentCorrect answer is option 'C'. Can you explain this answer?.
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