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    Physics A-Level

    Potential difference measurement and amplification

    What Potential difference measurement and amplification means in Physics A-Level, as defined for AQA.

    Definition of Potential difference measurement and amplification

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    A differential amplifier amplifies the voltage between pairs of electrodes while rejecting common-mode interference such as mains hum.
    AQA · Simple ECG machines and the normal ECG waveform (A-level only) (study guide)

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