JEE MAIN - Physics (2023 - 31st January Morning Shift - No. 4)
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:
$$\mathrm{n}_{\mathrm{e}}$$ decreases, resistance increases
Both $$\mathrm{n}_{\mathrm{e}}$$ and resistance increase
$$\mathrm{n}_{\mathrm{e}}$$ increases, resistance decreases
Both $$\mathrm{n}_{\mathrm{e}}$$ and resistance decrease
Explanation
As temperature increases $n_{e}$ increases, this results in increase in conductance.
$\therefore T$ increases, $n_{e}$ increases and $R$ decreases.
$\therefore T$ increases, $n_{e}$ increases and $R$ decreases.
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