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Let Np And Ne Be the Numbers of Holes and Conduction Electrons in an Extrinsic Semiconductor. - Physics

MCQ

Let np and ne be the numbers of holes and conduction electrons in an extrinsic semiconductor.

Options

  • np > ne

  •  np = ne

  • np < ne

  • np ≠ ne

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Solution

np ≠ ne
Extrinsic semiconductors are formed by doping either an n-type material or a p-type material with a pure semiconductor, Thus, it may have more number of holes (if the doping material is of p type) or more number of electrons (if the doping material is of ntype).

Concept: Intrinsic Semiconductor
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APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 23 Semiconductors and Semiconductor Devices
MCQ | Q 4 | Page 417
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