JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES

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The effect of increase in temperature on the number of electrons in conduction band

\left(n_{\mathrm{e}}\right)

and resistance of a semiconductor will be as

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Correct option: B

n_{\mathrm{e}}

increases, resistance decreases

Option B (

n_e

increases, resistance decreases) is correct because in semiconductors, increasing temperature leads to more electrons in the conduction band and a decrease in resistance.

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A PN-junction has a thickness of the order of In a

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\mathrm{\alpha\; and\; \beta }

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