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The operation of JFET involves mainly: (a) Flow of Minority carriers (b) Flow of Majority carriers (c) A very high input impedance (d) Negative resistance   Which of the following is correct?

The operation of JFET involves mainly: (a) Flow of Minority carriers (b) Flow of Majority carriers (c) A very high input impedance (d) Negative resistance   Which of the following is correct? Correct Answer (b) and (c)

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  • It is a transistor that relies on the electric field to control the shape of the channel and therefore on the conductivity of the channel. Hence referred to as field-effect transistor.
  • FET is a unipolar transistor that involves only one type of charge carrier in its operation.
  • In the case of an N-channel JFET, the operation involves a flow of electrons.
  • In the case of a p-channel JFET, the operation involves a flow of holes.
  • JFET operation involves the flow of majority carriers.
  • In JFET, the current flowing through channel b/w Drain in the source is controlled by the voltage applied at the Gate terminal, which is reverse biased.
  • As it is reverse biased, the Gate current is practically zero as it has high input impedance.

So both the statements (b) and (c) are correct.

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