What is the SI unit of power?
Answer & explanation
Correct answer: option 1
Power is defined as the rate of doing work or the rate of transfer of energy. If an agent does a work W in time t, then power is given by:
Power = \(\frac{work}{time}\)
The SI unit of power is watt [in honour of James Watt (1736 – 1819)] having the symbol W.
1 watt is the power of an agent, which does work at the rate of 1 joule per second.