Easy MCQ +4 / -1 PYQ · JEE Mains 2023

The effect of increase in temperature on the number of electrons in conduction band ($\mathrm{n_e}$) and resistance of a semiconductor will be as:

  1. A $\mathrm{n}_{\mathrm{e}}$ decreases, resistance increases
  2. B Both $\mathrm{n}_{\mathrm{e}}$ and resistance increase
  3. C $\mathrm{n}_{\mathrm{e}}$ increases, resistance decreases Correct answer
  4. D Both $\mathrm{n}_{\mathrm{e}}$ and resistance decrease

Solution

As temperature increases $n_{e}$ increases, this results in increase in conductance. <br/><br/>$\therefore T$ increases, $n_{e}$ increases and $R$ decreases.

About this question

Subject: Physics · Chapter: Electronic Devices · Topic: Semiconductors

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