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Relation between holes and free electrons per unit volume in an intrinsic semiconductor

The same question, asked 3 times: 9 May 2024 S1, 18 Apr 2026 S2, 14 May 2026 S2. Every wording below, oldest first.

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  1. Question 1

    9 May 2024 S1

    39
    For an intrinsic semiconductor (nhn_h and nen_e are the number of holes per unit volume and number of electrons per unit volume respectively)

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  2. Question 2

    18 Apr 2026 S2

    150
    For intrinsic semiconductor, if nhn_h and nen_e represent the number of holes per unit volume and the number of free electrons per unit volume respectively then

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  3. Question 3

    14 May 2026 S2

    148
    In an intrinsic semiconductor, at any ordinary temperature, the correct relation between the number of electrons per unit volume (ne)(n_e) and number of holes per unit volume (nh)(n_h) is

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