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    Question

    Which of the following statements about holes is

    incorrect ?
    A Hole is a mobile positive charge carrier Correct Answer Incorrect Answer
    B Holes have the same mobility as electrons Correct Answer Incorrect Answer
    C Holes are created when electrons leave the valence band Correct Answer Incorrect Answer
    D Holes can recombine with electrons Correct Answer Incorrect Answer

    Solution

    In semiconductors, a hole is the absence of an electron in the valence band and acts as a positive charge carrier . When an electron gets excited to the conduction band, it leaves behind a hole. While both electrons and holes contribute to conduction, they move differently and do not have the same mobility . Electrons generally have higher mobility than holes due to their lower effective mass and freer movement in the conduction band.

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