What is power? Write its SI unit.
Power is defined as the rate of doing work. It is the ratio of the work done (W) and the time taken (t).
Power (P) = 
The S.I unit of the power is Watt (W) in honour of the physicist James Watt.
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What is power? Write its SI unit.
Power is defined as the rate of doing work. It is the ratio of the work done (W) and the time taken (t).
Power (P) =
The S.I unit of the power is Watt (W) in honour of the physicist James Watt.