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Semiconductor Electronics question

2021 · Q145
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Semiconductor Electronics question

2021 · Q145

NEETPhysicsSemiconductor ElectronicsMCQ+4 / −1
The electron concentration in an n-type semiconductor is the same as hole concentration in a p-type semiconductor. An external field (electric) is applied across each of them. Compare the currents in them.
  1. A
    No current will flow in p-type, current will only flow in n-type
  2. B
    Current in n-type = current in p-type
  3. C
    current in p-type > current in n-type
  4. D
    current in n-type > current in p-type
View written solutionFree

Correct answer: D

In N type semiconductor majority charge carriers are e−-− and P type semiconductor majority charge carriers are holes.

I = neAVd = neA (μ\muμE)

As μ\muμe > μ\muμh ⇒\Rightarrow⇒ Ie > Ih

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