Skip to content
    Physics A-Level

    Fractional quark charge

    What Fractional quark charge means in Physics A-Level, as defined for OCR.

    Definitions of Fractional quark charge

    Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.

    Check what you remember

    Read the wording for your board, then hide it and explain Fractional quark charge in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: OCR

    Quark charges are given as fractions of the elementary charge e, such as +2/3 e for the up quark and −1/3 e for the down and strange quarks.
    OCR · Fundamental particles (study guide)
    Up-type quarks have charge +2⁄3 and down-type quarks have charge −1⁄3, while antiquarks have the opposite sign.
    OCR · Fundamental particles (study guide)

    Topics that use Fractional quark charge

    Related terms

    Using Fractional quark charge 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