The unit of electrical work is the Joule.

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The unit of electrical work is the Joule.

Work in electrical systems is energy transfer, and the unit used for that energy (and for electrical work) is the joule. The joule is the SI unit of energy and can be understood as a newton-meter—the amount of force applied over a distance. In electricity, moving a charge through a potential difference requires work W = V × Q, so moving 1 coulomb through 1 volt costs 1 joule of energy. That’s why the joule is the unit for electrical work. A watt, by contrast, is a unit of power, which is the rate at which work is done or energy is used (joules per second). A volt is the potential difference that pushes charges, and an ampere is the current, or the rate of charge flow. For example, moving 3 coulombs through a 4-volt difference does 12 joules of work, illustrating how voltage and charge translate into energy in joules.

Work in electrical systems is energy transfer, and the unit used for that energy (and for electrical work) is the joule. The joule is the SI unit of energy and can be understood as a newton-meter—the amount of force applied over a distance. In electricity, moving a charge through a potential difference requires work W = V × Q, so moving 1 coulomb through 1 volt costs 1 joule of energy. That’s why the joule is the unit for electrical work.

A watt, by contrast, is a unit of power, which is the rate at which work is done or energy is used (joules per second). A volt is the potential difference that pushes charges, and an ampere is the current, or the rate of charge flow. For example, moving 3 coulombs through a 4-volt difference does 12 joules of work, illustrating how voltage and charge translate into energy in joules.

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