Watt (W)

The watt (symbol: W) is a derived unit of power in the International System of Units (SI), named after the Scottish engineer James Watt (1736–1819). The unit, defined as one joule per second, measures the rate of energy conversion or transfer.

One watt is the rate at which work is done when an object's velocity is held constant at one meter per second against constant opposing force of one newton.

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