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For other uses, see Volt (disambiguation). The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.
The SI prefix milli represents a factor of 10 -3, or in exponential notation, 1E-3. So 1 millivolt = 10 -3 volts.The definition of a volt is as follows: The volt (symbol: V) is the SI derived unit of electric potential difference or electromotive force, commonly known as voltage.he SI prefix milli represents a factor of 10 -3, or in exponential notation, 1E-3. So 1 millivolt = 10 -3 volts.