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Materials and Components

Q1: Consider the following statement
If an electric field is applied to an n type semiconductor bar, the electrons and holes move in opposite directions due to their opposite charges. The net currents is
  1. both due to electrons and holes with electrons as majority carriers
  2. sum of hole and electron currents
  3. difference between electron and hole currents.
Which of above statements are correct?

A 1 only

B 1 and 2

C 2 only

D 3 only

ANS:B - 1 and 2

The net current is sum of currents due to holes and electrons. In n type materials, electrons are majority carriers.



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