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    Combined Science GCSE

    Root-mean-square value

    What Root-mean-square value means in Combined Science GCSE, as defined for AQA.

    Definition of Root-mean-square value

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    Reference: AQA

    The stated 230 V is an alternating potential difference, and this value is the root-mean-square value, so the peak is higher, about 325 V.
    AQA · Mains electricity (study guide)

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