ISRO Electronics & Communication (ECE) 2017-2 - Question 70

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Topic: Electronic Devices and Circuits

For current flowing through semiconductor, which of the following statement is true

  • A. Only conduction current
  • B. Only Diffusion Current
  • C. Conduction Current + Diffusion Current
  • D. None of the above

Answer: C. Conduction Current + Diffusion Current

Explanation: The total current flowing through a semiconductor is the sum of the drift current (caused by the electric field, often referred to here as conduction current) and the diffusion current (caused by the concentration gradient of charge carriers).

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