Answer : Power, P = 1200 Watts.
Explanation :
It is given that,
Work done, W = 3600 J
Time taken to complete the work, t = 3 s
The power is defined as the work done per unit time. The SI unit of power is watts.
Mathematically, it can be written as :


P = 1200 Watts.
So, the correct option is (B) " 1200 W ".
Hence, this is the required solution.