VOLT

•   This unit is named after Alessandro Volta.

•   Fundamentally, the volt is the measure of the work needed to move an electric charge. When 0.7376 foot-pound of work is required to move 6.25x1018 electrons between two points, each with its own charge, the potential difference is one.

•   6.25x1018 electrons make up one coulomb.

•   0.7376 ft-lb of work is same as I joule, which is the practical unit of work or energy. So we can say that

•                                                             1V=1J/1C

•   The symbol of potential difference is V for voltage.

•   In fact, the volt unit is used so often that potential difference is called voltage.

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