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Please tell me how LED works

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Please tell me how LED works

    • Posted by Jainab Khan 8 years ago

    CBSE > Class 12 > Physics
    • 1 answers

    Reshma Ranjan 8 years ago

    A pn junction made up of compound semiconductor with metallised contacts..when it is forward biased through a series resistance r , light photons are emitted from the non-metallised surface of the p-region. The series resistance r limits the current through the led and hence controls the intensity of light emitted by it

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