 | Watt (W): multiples and submultiples |
 | 1 watt = 1 joule per second
A watt (W) is a derived unit of power in the International System of Units (SI) defined as one joule per second. Power measures the rate of energy conversion or the rate at which work is done. 1 watt is the rate at which work is done when an objects velocity is held constant at one meter per second against the constant opposing force of one newton. |
  
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