Question

Define unit of power

Answer 1

Power is defined as work divided by time, so its units are joules/second. Scientists have another name for this unit, too. It's the watt, named after James Watt, the Scottish inventor who helped develop the steam engine that powered the Industrial Revolution. In the SI system, the watt is defined as:

1 watt = 1 J/s = 1 kg-m2/s3.

If you're measuring in the centimeters and grams, use this conversion:

1 watt = 107 ergs/s = 107 g-cm2/s3.

Answer 2

The si unit of power is watt

Which is denoted by W

The si unit of work is joule J that of time is sec s therefore the si unit of power is joule per sec called as watt