Skip to content
    Physics A-Level

    Threshold voltage of an LED

    What Threshold voltage of an LED means in Physics A-Level, as defined for OCR.

    Definition of Threshold voltage of an LED

    Check what you remember

    Read the wording for your board, then hide it and explain Threshold voltage of an LED in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: OCR

    The voltage at which the LED just begins to emit light or conduct appreciably, so that the minimum energy supplied per electron is eV.
    OCR · Photons (study guide)

    Topics that use Threshold voltage of an LED

    Related terms

    Using Threshold voltage of an LED in the exam

    Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.

    Practise Physics questions

    Create a free account to answer exam-style questions on this topic and get feedback on your answers.

    Start free

    A week of Premium from your first lesson · Then the free plan continues · No card, no charge

    All Physics A-Level terms