Single Choice

The reason of current flow in p-n junction in forward bias is:

ADrifting of charge carriers
BDrifting of minority charge carriers
CDiffussion of charge carriers
Correct Answer
DAll of the above

Solution

During formation of p-n junction p-side has excess holes and n-side has excess electrons. Hence, current tends to flow due to diffusion from p-side to n-side. This does not happen without an external bias because of the potential barrier at the junction.
When p-side is given a potential higher than the n-side, it aids in the flow of this diffusion current and hence, current flows.

SIMILAR QUESTIONS

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