Question:
An $n-p-n$ transistor has three leads $A, B$ and $C$. Connecting $B$ and $C$ by moist fingers, $A$ to the positive lead of an ammeter, and $C$ to the negative lead of the ammeter, one finds large deflection. Then, $A, B$ and $C$ refer respectively to :
An $n-p-n$ transistor has three leads $A, B$ and $C$. Connecting $B$ and $C$ by moist fingers, $A$ to the positive lead of an ammeter, and $C$ to the negative lead of the ammeter, one finds large deflection. Then, $A, B$ and $C$ refer respectively to :
Updated On: Apr 28, 2025
- Emitter, base and collector
- Base, emitter and collector
- Base, collector and emitter
- Collector, emitter and base.
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The Correct Option is A
Solution and Explanation
We know that the transistor is a current operated device (Beta model) and that a large current ($I _{ c }$ ) flows freely through the device between the collector and the emitter terminals when the transistor is switched fully-ON.
Therefore. $A$ is emitter and $C$ is collector.
Therefore. $A$ is emitter and $C$ is collector.
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Concepts Used:
Semiconductors
Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.
Properties of Semiconductor:
- Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
- Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
- Lesser power losses.
Uses of Semiconductor:
- Semiconductors are widely used in manufacturing electronics devices like transistors, diodes, sensors, integrated circuits.
- Semiconductors are widely used in all electronic devices, like mobile phones, digital cameras, communication devices, trains, ATMs, etc.