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If NA is number density of acceptor atoms added and ND is number density of donor atoms added to a semiconductor, ne and nh are the number density of electrons and holes in it, then

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Important Questions on Semiconductor Electronics: Materials, Devices and Simple Circuits

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In an unbiased p-n junction which of the following is correct?
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In a semiconductor diode, reverse bias current is due to drift of free electrons and holes caused by
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In a semiconductor diode, P-side is earthed and N-side is put at potential of -2 V, the diode shall
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Two identical p-n junctions may be connected in series with a battery in three ways. The potential difference across the two p-n junctions are equal in

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In a full-wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be
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A junction diode, in which one of the p or n-sections is made very thin, can be used to convert light energy into electrical energy, then the diode is called