An electromotive force is the force that tends to make charge move or flow in a circuit. EMF is measured in volts.
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PotentialThis is a measurement of Voltage (EMF) relative to Ground or Earth. Potential DifferencePotential Difference is a measurement of the difference between two potentials (relative to each other and not to Ground or Earth). The VoltThe volt is defined as the potential difference across a conductor when a current of one ampere dissipates one watt of power.
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