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  4. In the case of forward biasing of a p-n junction diode, which one of the following figures correctly depicts the direction of conventional current (indicated by an arrow mark)?

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Q. In the case of forward biasing of a $p-n$ junction diode, which one of the following figures correctly depicts the direction of conventional current (indicated by an arrow mark)?

KCETKCET 2011Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

In $P$ -region direction of conventional current is same as flow of holes and in $n$ - region direction of conventional current opposite to direction of electron flow.