The SI unit of power is the watt (W). One watt is defined as one joule of energy transferred or work done per second. In formula terms, power PPP is given by:
P=WtP=\frac{W}{t}P=tW
where WWW is work or energy in joules and ttt is time in seconds, so 1 watt = 1 joule/second
. The watt is named after James Watt, the Scottish inventor, and is widely used to measure the rate of energy transfer in mechanical, electrical, and other systems
