In a transistor, the emitter to base function is:
Correct answer: B. Forward biased
- A. Reversed biased
- B. Forward biased
- C. Neutral
- D. None of these
Explanation
In a transistor, the emitter to base function is forward-biased. A transistor is a three-terminal semiconductor device that can amplify or switch electronic signals. It consists of three layers: the emitter, the base, and the collector. The emitter is doped heavily with impurities to increase its conductivity, while the base is lightly doped. The collector is moderately doped. When a voltage is applied between the emitter and the base, in the forward direction, the emitter-base junction is forward-biased.
This question appeared on the ETEA MDCAT 2010 paper, which you can sit online with every answer explained.
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About PN Junction
A PN junction forms when p type and n type semiconductor regions meet, creating a depletion layer and a potential barrier. The topic covers forward and reverse bias, diode current voltage characteristics, breakdown and rectification, while distinguishing an ordinary junction diode from a transistor formed from multiple junctions.
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