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Practice over 1000+ GATE-level questions from this topic!

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Q#1 Semiconductor Physics GATE EC 2021 MCQ +1 mark -0.33 marks

The energy band diagram of a p-type semiconductor bar of length  under equilibrium condition (i.e, the Fermi energy level  is constant) is shown in the figure. The valence band  is sloped since doping is non-uniform along the bar. The difference between the energy levels of the valence band at the two edges of the bar is .

If the charge of an electron is , then the magnitude of the electric field developed inside this semiconductor bar is

 

 

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